{
  "meta": {
    "title": "Prairie Avenue · 1904",
    "target_year": 1904,
    "end_year": 1911,
    "scope": "Prairie Avenue, 16th–22nd Streets; adjacent architectural context explicitly marked.",
    "coverage_note": "Research collection, not a completed digital reconstruction or a certified census of every building. Named buildings, map-frontage readings and directory candidates are separate evidence layers. Unknown dates and unmeasured dimensions remain unknown.",
    "research_date": "2026-09-26",
    "endpoint_reason": "1911 is the supplied Sanborn survey endpoint; later demolition dates remain in histories. It is not asserted to be the first year of decline.",
    "month_day": null,
    "counts": {
      "buildings": 63,
      "sources": 110,
      "maps": 11,
      "measurements": 34,
      "occupancy_candidates": 73,
      "map_frontages": 91
    }
  },
  "buildings": [
    {
      "id": "pa-1612-1",
      "address": "1612 S. Prairie Avenue",
      "name": "Joseph Goodman / Studebaker residence",
      "construction": "1869",
      "demolition": "circa 1960",
      "architect": null,
      "notes": "Bishop Anderson residence from 1905; do not backdate that occupancy. | 1904 Blue Book candidate: Charles Edward Brown; George F. Brown; George F. Brown Jr.. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_north",
        "civic-bluebook-1904"
      ],
      "built_year": 1869,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1869",
          "source_ids": [
            "B-marker_north",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "circa 1960",
          "source_ids": [
            "B-marker_north",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1612,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Charles Edward Brown; George F. Brown; George F. Brown Jr.",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1638-2",
      "address": "1638 S. Prairie Avenue",
      "name": "John G. Shortall / Robert B. and Addie Gregory residence",
      "construction": "1868 (marker); 1870 (1973 report)",
      "demolition": "1944 (marker); conflicts with report’s 1947 occupancy claim",
      "architect": "John W. Roberts",
      "notes": "Chronology conflict retained; adjudicate against permits/newspapers. | 1904 Blue Book candidate: Robert B. Gregory household; Elizabeth Gregory; Miss Gregory. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_north",
        "B-city1973",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1868 (marker); 1870 (1973 report)",
          "source_ids": [
            "B-marker_north",
            "B-city1973",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1944 (marker); conflicts with report’s 1947 occupancy claim",
          "source_ids": [
            "B-marker_north",
            "B-city1973",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1638,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Robert B. Gregory household; Elizabeth Gregory; Miss Gregory",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1701-3",
      "address": "1701 S. Prairie Avenue",
      "name": "William G. Hibbard residence",
      "construction": "1869",
      "demolition": "1932",
      "architect": "William Le Baron Jenney",
      "notes": "American Terra Cotta acquired 1921; Sullivan office was later use. | 1904 Blue Book candidate: Mrs. William Gold Hibbard; Mrs. O. Van Schaack Ward. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_north",
        "civic-bluebook-1904"
      ],
      "built_year": 1869,
      "demolished_year": 1932,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1869",
          "source_ids": [
            "B-marker_north",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1932",
          "source_ids": [
            "B-marker_north",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1701,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. William Gold Hibbard; Mrs. O. Van Schaack Ward",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1721-4",
      "address": "1721 S. Prairie Avenue",
      "name": "Wirt Dexter residence",
      "construction": "1863",
      "demolition": "1927",
      "architect": null,
      "notes": "Arthur Little front addition, 1889; later relocation of addition requires dated phase model. | 1904 Blue Book candidate: Henry H. Walker household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_north",
        "civic-bluebook-1904"
      ],
      "built_year": 1863,
      "demolished_year": 1927,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1863",
          "source_ids": [
            "B-marker_north",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1927",
          "source_ids": [
            "B-marker_north",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1721,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Henry H. Walker household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1729-5",
      "address": "1729 S. Prairie Avenue",
      "name": "George M. Pullman residence",
      "construction": "1870–1876",
      "demolition": "1922",
      "architect": "Henry S. Jaffray; later Solon S. Beman",
      "notes": "Marker spells Jaffay; theatre, organ, bowling alley; conservatory/park extended across 18th along Calumet. | 1904 Blue Book candidate: Mrs. George M. Pullman. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_north",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": 1922,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1870–1876",
          "source_ids": [
            "B-marker_north",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1922",
          "source_ids": [
            "B-marker_north",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1729,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. George M. Pullman",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1808-6",
      "address": "1808 S. Prairie Avenue",
      "name": "Osborn R. Keith / Stanley Field residence",
      "construction": "1886",
      "demolition": "1968",
      "architect": "Cobb & Frost",
      "notes": "North wall retained beside Glessner courtyard. | 1904 Blue Book candidate: Stanley Field household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_west",
        "civic-bluebook-1904"
      ],
      "built_year": 1886,
      "demolished_year": 1968,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1886",
          "source_ids": [
            "B-marker_west",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1968",
          "source_ids": [
            "B-marker_west",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1808,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Stanley Field household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1812-7",
      "address": "1812 S. Prairie Avenue",
      "name": "George H. Wheeler residence",
      "construction": "1884",
      "demolition": "1968",
      "architect": "Burnham & Root",
      "notes": "Brick, Dutch vernacular rowhouse. | 1904 Blue Book candidate: Lawrence A. Young household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_west",
        "civic-bluebook-1904"
      ],
      "built_year": 1884,
      "demolished_year": 1968,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1884",
          "source_ids": [
            "B-marker_west",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1968",
          "source_ids": [
            "B-marker_west",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1812,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Lawrence A. Young household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1824-8",
      "address": "1824 S. Prairie Avenue",
      "name": "Samuel B. Pomeroy / George B. Marsh residence",
      "construction": "1857",
      "demolition": "1940s",
      "architect": null,
      "notes": "New stone front in early 1880s; use altered form for 1904. | 1904 Blue Book candidate: Secor Cunningham household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_west",
        "civic-bluebook-1904"
      ],
      "built_year": 1857,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1857",
          "source_ids": [
            "B-marker_west",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1940s",
          "source_ids": [
            "B-marker_west",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1824,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Secor Cunningham household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1834-9",
      "address": "1834 S. Prairie Avenue",
      "name": "Fernando Jones residence",
      "construction": "1866 (marker); post-1871 (1973 report)",
      "demolition": "1942",
      "architect": "John M. Van Osdel",
      "notes": "1886 mansard addition; disputed original construction date. | 1904 Blue Book candidate: Fernando Jones household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_west",
        "B-city1973",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": 1942,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1866 (marker); post-1871 (1973 report)",
          "source_ids": [
            "B-marker_west",
            "B-city1973",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1942",
          "source_ids": [
            "B-marker_west",
            "B-city1973",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1834,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Fernando Jones household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1912-10",
      "address": "1912 S. Prairie Avenue",
      "name": "Bryan P. Moulton / Frank O. Lowden residence",
      "construction": "1882",
      "demolition": "1939",
      "architect": null,
      "notes": "Marker says Lowden acquired 1898; 1973 report says 1899. Later Blackstone widow use not necessarily 1904. | 1904 Blue Book candidate: Frank Orren Lowden household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_west",
        "civic-bluebook-1904"
      ],
      "built_year": 1882,
      "demolished_year": 1939,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1882",
          "source_ids": [
            "B-marker_west",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1939",
          "source_ids": [
            "B-marker_west",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1912,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Frank Orren Lowden household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1936-11",
      "address": "1936 S. Prairie Avenue",
      "name": "Daniel M. Thompson / Samuel W. Allerton residence",
      "construction": "1870",
      "demolition": "1915",
      "architect": "Lavall B. Dixon",
      "notes": "Allerton ownership from 1879; Hump Hairpin factory replaced house. | 1904 Blue Book candidate: S. W. Allerton household; Robert H. Allerton. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_west",
        "civic-bluebook-1904"
      ],
      "built_year": 1870,
      "demolished_year": 1915,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1870",
          "source_ids": [
            "B-marker_west",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1915",
          "source_ids": [
            "B-marker_west",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1936,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "S. W. Allerton household; Robert H. Allerton",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1815-12",
      "address": "1815 S. Prairie Avenue",
      "name": "Joseph Sears / Arthur Meeker residence",
      "construction": "1882",
      "demolition": "1967",
      "architect": "Burnham & Root",
      "notes": "Meeker acquired 1902; exact 1904 occupancy needs directory. | 1904 Blue Book candidate: Arthur Meeker household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": "Arthur Meeker family, supported by 1902 acquisition but not a 1904 household roster",
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_east",
        "civic-bluebook-1904"
      ],
      "built_year": 1882,
      "demolished_year": 1967,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1882",
          "source_ids": [
            "B-marker_east",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1967",
          "source_ids": [
            "B-marker_east",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1815,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Arthur Meeker household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1823-13",
      "address": "1823 S. Prairie Avenue",
      "name": "Thomas Dent residence",
      "construction": "1881",
      "demolition": "1945",
      "architect": "Burnham & Root",
      "notes": "Later donated to Second Presbyterian Church. | 1904 Blue Book candidate: Thomas Dent household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_east",
        "civic-bluebook-1904"
      ],
      "built_year": 1881,
      "demolished_year": 1945,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1881",
          "source_ids": [
            "B-marker_east",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1945",
          "source_ids": [
            "B-marker_east",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1823,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Thomas Dent household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1827-14",
      "address": "1827 S. Prairie Avenue",
      "name": "John W. Doane residence",
      "construction": "1882",
      "demolition": "1936",
      "architect": "Theodore V. Wadskier",
      "notes": "La Farge glazing; verify architect spelling against signed drawings.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_east"
      ],
      "built_year": 1882,
      "demolished_year": 1936,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1882",
          "source_ids": [
            "B-marker_east"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1936",
          "source_ids": [
            "B-marker_east"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1901-15",
      "address": "1901 S. Prairie Avenue",
      "name": "Osborn R. Keith / Norman B. Ream residence",
      "construction": "1882",
      "demolition": "1929",
      "architect": "Lavall B. Dixon; remodel Daniel Burnham",
      "notes": "1887 remodeling is relevant to target form. | 1904 Blue Book candidate: Norman B. Ream household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_east",
        "civic-bluebook-1904"
      ],
      "built_year": 1882,
      "demolished_year": 1929,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1882",
          "source_ids": [
            "B-marker_east",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1929",
          "source_ids": [
            "B-marker_east",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1901,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Norman B. Ream household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1905-16",
      "address": "1905 S. Prairie Avenue",
      "name": "Marshall Field Sr. residence",
      "construction": "1871–1873",
      "demolition": "1955",
      "architect": "Richard Morris Hunt",
      "notes": "New Bauhaus and aeronautical school were later uses. | 1904 Blue Book candidate: Marshall Field. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_east",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": 1955,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1871–1873",
          "source_ids": [
            "B-marker_east",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1955",
          "source_ids": [
            "B-marker_east",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1905,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Marshall Field",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2009-17",
      "address": "2009 S. Prairie Avenue",
      "name": "Max A. Mayer residence",
      "construction": "1888",
      "demolition": "1955",
      "architect": "Burnham & Root",
      "notes": "Marker heading spells Meyer; text spells Mayer; retain name ambiguity. | 1904 Blue Book candidate: M. A. Meyer household; E. F. Meyer; Albert Meyer; Carl Meyer; Abraham Meyer. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_south",
        "civic-bluebook-1904"
      ],
      "built_year": 1888,
      "demolished_year": 1955,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1888",
          "source_ids": [
            "B-marker_south",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1955",
          "source_ids": [
            "B-marker_south",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2009,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "M. A. Meyer household; E. F. Meyer; Albert Meyer; Carl Meyer; Abraham Meyer",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2100-18",
      "address": "2100 S. Prairie Avenue",
      "name": "John B. Sherman residence",
      "construction": "1874",
      "demolition": "1936",
      "architect": "Burnham & Root",
      "notes": "",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_south"
      ],
      "built_year": 1874,
      "demolished_year": 1936,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1874",
          "source_ids": [
            "B-marker_south"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1936",
          "source_ids": [
            "B-marker_south"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2115-19",
      "address": "2115 S. Prairie Avenue",
      "name": "David Kelley / Philip D. Armour residence",
      "construction": "1871",
      "demolition": "1937",
      "architect": null,
      "notes": "Armour widow remained through 1927; do not label deceased Philip as 1904 occupant. | 1904 Blue Book candidate: Mrs. Philip D. Armour. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_south",
        "civic-bluebook-1904"
      ],
      "built_year": 1871,
      "demolished_year": 1937,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1871",
          "source_ids": [
            "B-marker_south",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1937",
          "source_ids": [
            "B-marker_south",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2115,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. Philip D. Armour",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2126-20",
      "address": "2126 S. Prairie Avenue",
      "name": "Edward F. Robbins residence",
      "construction": "1904 (marker); other accounts say 1905",
      "demolition": "2002",
      "architect": "Mann, MacNeill & Lindeberg",
      "notes": "Target-year construction event: no exact completion/occupancy date established. Red brick, white marble; publishing offices later. | 1904 Blue Book candidate: Edward F. Robbins household. OCR-derived, selected names only; page verification pending.",
      "target1904": "construction during target year; month unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_south",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": 2002,
      "status_1904": "construction during target year; month unresolved",
      "events": [
        {
          "type": "construction",
          "date_text": "1904 (marker); other accounts say 1905",
          "source_ids": [
            "B-marker_south",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "2002",
          "source_ids": [
            "B-marker_south",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2126,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Edward F. Robbins household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2140-21",
      "address": "2140 S. Prairie Avenue",
      "name": "William F. Tucker / Byron L. Smith residence",
      "construction": "1876",
      "demolition": "1936",
      "architect": "John M. Van Osdel",
      "notes": "Smith acquired 1881; dining room salvaged to Northern Trust. | 1904 Blue Book candidate: Byron L. Smith household; Walter B. Smith; Harold C. Smith; Bruce D. Smith. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_south",
        "civic-bluebook-1904"
      ],
      "built_year": 1876,
      "demolished_year": 1936,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1876",
          "source_ids": [
            "B-marker_south",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1936",
          "source_ids": [
            "B-marker_south",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2140,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Byron L. Smith household; Walter B. Smith; Harold C. Smith; Bruce D. Smith",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1800-22",
      "address": "1800 S. Prairie Avenue",
      "name": "John and Frances Glessner residence",
      "construction": "1887",
      "demolition": null,
      "architect": "Henry Hobson Richardson",
      "notes": "Extant courtyard house; consult separate deep Glessner dossier. | 1904 Blue Book candidate: John J. Glessner household. OCR-derived, selected names only; page verification pending. | Dimensional evidence: granite facing thickness: 6 and 8 in (August 1963 HABS observation; match with 1904 phase before use); roof tile module: 6 wide; 5 exposed in (August 1963 HABS observation; match with 1904 phase before use); principal oak floor strip width: 2.25 in (August 1963 HABS observation; match with 1904 phase before use); bathroom and service-floor tile module: 6 in square (August 1963 HABS observation; match with 1904 phase before use); corridor wainscot height: 3 ft (August 1963 HABS observation; match with 1904 phase before use); bathroom tile height: 5 ft (August 1963 HABS observation; match with 1904 phase before use); glazed white service brick: 2.25 × 8.25 in (August 1963 HABS observation; match with 1904 phase before use); overall east-west extent: 161 ft 3 in imperial (1963/1965 measured record; assess against target1904); overall east/front north-south extent: 74 ft 0 in imperial (1963/1965 measured record; assess against target1904); wood stair behind service wing: 1955 approximate year added (1963/1965 measured record; assess against target1904); service stalls: None  (1963/1965 measured record; assess against target1904); coachmen/hayloft partitions: None  (1963/1965 measured record; assess against target1904); north chimney top above door datum: 48.62 ft (1963/1965 measured record; assess against target1904); second-floor window soffit above door datum: 24.3 ft (1963/1965 measured record; assess against target1904); sidewalk before door relative to door datum: -0.74 ft (1963/1965 measured record; assess against target1904)",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_survivors",
        "civic-bluebook-1904",
        "G01",
        "G02",
        "G04",
        "G07",
        "MAP-1911-28",
        "pa-glessner-habs-data",
        "pa-glessner-habs-sheet-2",
        "pa-glessner-habs-sheet-3",
        "pa-glessner-habs-sheet-6",
        "G01-P",
        "pa-glessner-habs-captions",
        "G16"
      ],
      "built_year": 1887,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1887",
          "source_ids": [
            "B-marker_survivors",
            "civic-bluebook-1904",
            "G01",
            "G02",
            "G04",
            "G07",
            "MAP-1911-28"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1800,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "John J. Glessner household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": [
        {
          "source_file": "glessner-habs-data.pdf",
          "pdf_page": 22,
          "address": "1800 S. Prairie Avenue",
          "property": "granite facing thickness",
          "value": "6 and 8",
          "unit": "in",
          "note": "Brick backing; Wellesley granite facing with deeper returns.",
          "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
          "source_id": "pa-glessner-habs-data"
        },
        {
          "source_file": "glessner-habs-data.pdf",
          "pdf_page": 22,
          "address": "1800 S. Prairie Avenue",
          "property": "roof tile module",
          "value": "6 wide; 5 exposed",
          "unit": "in",
          "note": "Survey describes tar-covered terracotta; reconcile restoration and original specifications.",
          "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
          "source_id": "pa-glessner-habs-data"
        },
        {
          "source_file": "glessner-habs-data.pdf",
          "pdf_page": 23,
          "address": "1800 S. Prairie Avenue",
          "property": "principal oak floor strip width",
          "value": 2.25,
          "unit": "in",
          "note": "1963 architectural description.",
          "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
          "source_id": "pa-glessner-habs-data"
        },
        {
          "source_file": "glessner-habs-data.pdf",
          "pdf_page": 23,
          "address": "1800 S. Prairie Avenue",
          "property": "bathroom and service-floor tile module",
          "value": 6,
          "unit": "in square",
          "note": "Service floors alternate red/tan; bathrooms separately described.",
          "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
          "source_id": "pa-glessner-habs-data"
        },
        {
          "source_file": "glessner-habs-data.pdf",
          "pdf_page": 23,
          "address": "1800 S. Prairie Avenue",
          "property": "corridor wainscot height",
          "value": 3,
          "unit": "ft",
          "note": "Tower and wing corridors.",
          "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
          "source_id": "pa-glessner-habs-data"
        },
        {
          "source_file": "glessner-habs-data.pdf",
          "pdf_page": 23,
          "address": "1800 S. Prairie Avenue",
          "property": "bathroom tile height",
          "value": 5,
          "unit": "ft",
          "note": "Six-inch square wall tiles.",
          "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
          "source_id": "pa-glessner-habs-data"
        },
        {
          "source_file": "glessner-habs-data.pdf",
          "pdf_page": 23,
          "address": "1800 S. Prairie Avenue",
          "property": "glazed white service brick",
          "value": "2.25 × 8.25",
          "unit": "in",
          "note": "Black joints 1/8 in; kitchen/pantries/laundry/stable/harness spaces.",
          "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
          "source_id": "pa-glessner-habs-data"
        },
        {
          "source_file": "glessner-habs-sheet-2.tif",
          "address": "1800 S. Prairie Avenue",
          "property": "overall east-west extent",
          "value": "161 ft 3 in",
          "unit": "imperial",
          "note": "Read dimension annotation along 18th Street edge; first-floor plan, 1963.",
          "temporal_qualification": "1963/1965 measured record; assess against target1904",
          "source_id": "pa-glessner-habs-sheet-2"
        },
        {
          "source_file": "glessner-habs-sheet-2.tif",
          "address": "1800 S. Prairie Avenue",
          "property": "overall east/front north-south extent",
          "value": "74 ft 0 in",
          "unit": "imperial",
          "note": "Read dimension annotation at Prairie Avenue frontage; 1963.",
          "temporal_qualification": "1963/1965 measured record; assess against target1904",
          "source_id": "pa-glessner-habs-sheet-2"
        },
        {
          "source_file": "glessner-habs-sheet-2.tif",
          "address": "1800 S. Prairie Avenue",
          "property": "wood stair behind service wing",
          "value": 1955,
          "unit": "approximate year added",
          "note": "Sheet explicitly notes circa1955; EXCLUDE this stair from 1904.",
          "temporal_qualification": "1963/1965 measured record; assess against target1904",
          "source_id": "pa-glessner-habs-sheet-2"
        },
        {
          "source_file": "glessner-habs-sheet-2.tif",
          "address": "1800 S. Prairie Avenue",
          "property": "service stalls",
          "value": null,
          "unit": null,
          "note": "Dotted lines are PROBABLE stall partitions based on early drawings, not surveyed extant partitions.",
          "temporal_qualification": "1963/1965 measured record; assess against target1904",
          "source_id": "pa-glessner-habs-sheet-2"
        },
        {
          "source_file": "glessner-habs-sheet-3.tif",
          "address": "1800 S. Prairie Avenue",
          "property": "coachmen/hayloft partitions",
          "value": null,
          "unit": null,
          "note": "Dotted lines reconstruct probable separation from early drawings; retain inference status.",
          "temporal_qualification": "1963/1965 measured record; assess against target1904",
          "source_id": "pa-glessner-habs-sheet-3"
        },
        {
          "source_file": "glessner-habs-sheet-6.tif",
          "address": "1800 S. Prairie Avenue",
          "property": "north chimney top above door datum",
          "value": 48.62,
          "unit": "ft",
          "note": "Annotation 48.62 ±0.02. April6 1965 photogrammetry; door datum0.00.",
          "temporal_qualification": "1963/1965 measured record; assess against target1904",
          "source_id": "pa-glessner-habs-sheet-6"
        },
        {
          "source_file": "glessner-habs-sheet-6.tif",
          "address": "1800 S. Prairie Avenue",
          "property": "second-floor window soffit above door datum",
          "value": 24.3,
          "unit": "ft",
          "note": "Read drawing annotation; April6 1965 photogrammetry.",
          "temporal_qualification": "1963/1965 measured record; assess against target1904",
          "source_id": "pa-glessner-habs-sheet-6"
        },
        {
          "source_file": "glessner-habs-sheet-6.tif",
          "address": "1800 S. Prairie Avenue",
          "property": "sidewalk before door relative to door datum",
          "value": -0.74,
          "unit": "ft",
          "note": "Read drawing annotation; do not conflate with Chicago City Datum.",
          "temporal_qualification": "1963/1965 measured record; assess against target1904",
          "source_id": "pa-glessner-habs-sheet-6"
        }
      ]
    },
    {
      "id": "pa-1801-23",
      "address": "1801 S. Prairie Avenue",
      "name": "William W. Kimball residence",
      "construction": "1890–1892",
      "demolition": null,
      "architect": "Solon S. Beman",
      "notes": "Marker dates 1890; museum article explains completion in 1892 after two-year construction. | 1904 Blue Book candidate: W. W. Kimball household. OCR-derived, selected names only; page verification pending. | Dimensional evidence: height form: 2.5 stories above raised basement (1967 survey observation); roof and exterior finishes: None  (1967 survey observation; verify 1904 finish evidence); rear cellar tile: 3 × 6 in (1967 observed finish; original date not established); parlor wainscot line: 4.5 ft approx (1967 survey observation); north sidewalk slab: 4 ft square approx (1967 survey observation; not automatically 1904); iron fence height: 6 ft (1967 survey observation; do not use later chain-link parking enclosure in 1904)",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_survivors",
        "B-kimball",
        "civic-bluebook-1904",
        "pa-kimball-habs-il1077"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1890–1892",
          "source_ids": [
            "B-marker_survivors",
            "B-kimball",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1801,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "W. W. Kimball household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": [
        {
          "source_file": "kimball-habs-data.pdf",
          "pdf_page": 2,
          "address": "1801 S. Prairie Avenue",
          "property": "height form",
          "value": 2.5,
          "unit": "stories above raised basement",
          "note": "L-shaped with attached carriage house; Bedford stone, wood frame floors/roof.",
          "temporal_qualification": "1967 survey observation",
          "source_id": "pa-kimball-habs-il1077"
        },
        {
          "source_file": "kimball-habs-data.pdf",
          "pdf_page": 3,
          "address": "1801 S. Prairie Avenue",
          "property": "roof and exterior finishes",
          "value": null,
          "unit": null,
          "note": "Black slate, copper ridges and finials, black wood sash.",
          "temporal_qualification": "1967 survey observation; verify 1904 finish evidence",
          "source_id": "pa-kimball-habs-il1077"
        },
        {
          "source_file": "kimball-habs-data.pdf",
          "pdf_page": 4,
          "address": "1801 S. Prairie Avenue",
          "property": "rear cellar tile",
          "value": "3 × 6",
          "unit": "in",
          "note": "Unglazed red tile.",
          "temporal_qualification": "1967 observed finish; original date not established",
          "source_id": "pa-kimball-habs-il1077"
        },
        {
          "source_file": "kimball-habs-data.pdf",
          "pdf_page": 4,
          "address": "1801 S. Prairie Avenue",
          "property": "parlor wainscot line",
          "value": 4.5,
          "unit": "ft approx",
          "note": "Bookcases and mantel continue at this height.",
          "temporal_qualification": "1967 survey observation",
          "source_id": "pa-kimball-habs-il1077"
        },
        {
          "source_file": "kimball-habs-data.pdf",
          "pdf_page": 5,
          "address": "1801 S. Prairie Avenue",
          "property": "north sidewalk slab",
          "value": 4,
          "unit": "ft square approx",
          "note": "Limestone blocks.",
          "temporal_qualification": "1967 survey observation; not automatically 1904",
          "source_id": "pa-kimball-habs-il1077"
        },
        {
          "source_file": "kimball-habs-data.pdf",
          "pdf_page": 5,
          "address": "1801 S. Prairie Avenue",
          "property": "iron fence height",
          "value": 6,
          "unit": "ft",
          "note": "Fence dips at curved front balcony.",
          "temporal_qualification": "1967 survey observation; do not use later chain-link parking enclosure in 1904",
          "source_id": "pa-kimball-habs-il1077"
        }
      ]
    },
    {
      "id": "pa-1811-24",
      "address": "1811 S. Prairie Avenue",
      "name": "Joseph G. Coleman / Ames residence",
      "construction": "1886",
      "demolition": null,
      "architect": "Cobb & Frost",
      "notes": "Brown sandstone; Romanesque.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_survivors"
      ],
      "built_year": 1886,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1886",
          "source_ids": [
            "B-marker_survivors"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1900-25",
      "address": "1900 S. Prairie Avenue",
      "name": "Elbridge G. Keith residence",
      "construction": "1870",
      "demolition": null,
      "architect": "John W. Roberts",
      "notes": "Second Empire. | 1904 Blue Book candidate: Elbridge G. Keith household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_survivors",
        "civic-bluebook-1904"
      ],
      "built_year": 1870,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1870",
          "source_ids": [
            "B-marker_survivors",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1900,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Elbridge G. Keith household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1919-26",
      "address": "1919 S. Prairie Avenue",
      "name": "William Murray / Charles Schwartz / Marshall Field Jr. residence",
      "construction": "1867 (marker); 1883 Beman commission (museum research)",
      "demolition": null,
      "architect": "Solon S. Beman; D. H. Burnham & Co. addition",
      "notes": "1902 enlargement; 20-foot land strip from Field Sr.; construction phases need adjudication. | 1904 Blue Book candidate: Marshall Field Jr. household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_survivors",
        "B-news",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1867 (marker); 1883 Beman commission (museum research)",
          "source_ids": [
            "B-marker_survivors",
            "B-news",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1919,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Marshall Field Jr. household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-213–217-e.-cullerton-street-27",
      "address": "213–217 E. Cullerton Street",
      "name": "Three surviving rowhouses",
      "construction": "circa 1870–1900",
      "demolition": null,
      "architect": null,
      "notes": "Aggregate inventory record; split to 213, 215, 217 after parcel map review.",
      "target1904": "inferred present",
      "scope": "adjacent",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_survivors"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "circa 1870–1900",
          "source_ids": [
            "B-marker_survivors"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1827-s.-indiana-avenue-(modern-location)-28",
      "address": "1827 S. Indiana Avenue (modern location)",
      "name": "Henry B. Clarke residence",
      "construction": "1836",
      "demolition": null,
      "architect": null,
      "notes": "Moved to Wabash in 1872, here in 1977. EXCLUDE from 1904 neighborhood scene.",
      "target1904": "absent from this site in 1904",
      "scope": "anachronism guard",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_survivors"
      ],
      "built_year": 1836,
      "demolished_year": null,
      "status_1904": "absent from this site in 1904",
      "events": [
        {
          "type": "construction",
          "date_text": "1836",
          "source_ids": [
            "B-marker_survivors"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": true,
      "measurements": []
    },
    {
      "id": "pa-2013-29",
      "address": "2013 S. Prairie Avenue",
      "name": "William H. Reid residence",
      "construction": "1894",
      "demolition": null,
      "architect": "Beers, Clay & Dutton",
      "notes": "Replaced earlier house on same parcel. Nomination PDF is acquisition lead. | 1904 Blue Book candidate: William H. Reid household. OCR-derived, selected names only; page verification pending. | Dimensional evidence: lot and facade width: 25 ft (2003 nomination observation; likely original envelope, confirm against 1904 map); height form: 3 stories above raised basement (2003 observation); stair wall panel height: 7 ft approx (2003 observation); music-room dome diameter: 7 ft approx (2003 observation); main and second floor ceiling: 10 ft (2003 observation); ballroom ceiling: 12 ft (2003 observation); main girder span: 25 ft (Nomination cites Carl Condit; verify original structural drawings); plans: 4 floor diagrams (Nomination-era plan; scale/dimensions must be inspected before metric extraction)",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_outside",
        "civic-bluebook-1904",
        "pa-reid-nrhp-2003"
      ],
      "built_year": 1894,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1894",
          "source_ids": [
            "B-marker_outside",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2013,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "William H. Reid household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": [
        {
          "source_file": "reid-nrhp-2003.pdf",
          "pdf_page": 4,
          "address": "2013 S. Prairie Avenue",
          "property": "lot and facade width",
          "value": 25,
          "unit": "ft",
          "note": "House spans full lot width.",
          "temporal_qualification": "2003 nomination observation; likely original envelope, confirm against 1904 map",
          "source_id": "pa-reid-nrhp-2003"
        },
        {
          "source_file": "reid-nrhp-2003.pdf",
          "pdf_page": 4,
          "address": "2013 S. Prairie Avenue",
          "property": "height form",
          "value": 3,
          "unit": "stories above raised basement",
          "note": "Three bays; granite basement, cream textured brick, limestone and terra cotta details.",
          "temporal_qualification": "2003 observation",
          "source_id": "pa-reid-nrhp-2003"
        },
        {
          "source_file": "reid-nrhp-2003.pdf",
          "pdf_page": 5,
          "address": "2013 S. Prairie Avenue",
          "property": "stair wall panel height",
          "value": 7,
          "unit": "ft approx",
          "note": "Mahogany panels.",
          "temporal_qualification": "2003 observation",
          "source_id": "pa-reid-nrhp-2003"
        },
        {
          "source_file": "reid-nrhp-2003.pdf",
          "pdf_page": 6,
          "address": "2013 S. Prairie Avenue",
          "property": "music-room dome diameter",
          "value": 7,
          "unit": "ft approx",
          "note": "Stained glass dome.",
          "temporal_qualification": "2003 observation",
          "source_id": "pa-reid-nrhp-2003"
        },
        {
          "source_file": "reid-nrhp-2003.pdf",
          "pdf_page": 8,
          "address": "2013 S. Prairie Avenue",
          "property": "main and second floor ceiling",
          "value": 10,
          "unit": "ft",
          "note": "Third-floor ballroom ceiling 12 ft.",
          "temporal_qualification": "2003 observation",
          "source_id": "pa-reid-nrhp-2003"
        },
        {
          "source_file": "reid-nrhp-2003.pdf",
          "pdf_page": 8,
          "address": "2013 S. Prairie Avenue",
          "property": "ballroom ceiling",
          "value": 12,
          "unit": "ft",
          "note": "Picture molding at 9 ft.",
          "temporal_qualification": "2003 observation",
          "source_id": "pa-reid-nrhp-2003"
        },
        {
          "source_file": "reid-nrhp-2003.pdf",
          "pdf_page": 23,
          "address": "2013 S. Prairie Avenue",
          "property": "main girder span",
          "value": 25,
          "unit": "ft",
          "note": "Steel frame; reinforced concrete floor construction described.",
          "temporal_qualification": "Nomination cites Carl Condit; verify original structural drawings",
          "source_id": "pa-reid-nrhp-2003"
        },
        {
          "source_file": "reid-nrhp-2003.pdf",
          "pdf_page": 32,
          "address": "2013 S. Prairie Avenue",
          "property": "plans",
          "value": 4,
          "unit": "floor diagrams",
          "note": "Ground, first, second, third; carriage house and rear garden shown.",
          "temporal_qualification": "Nomination-era plan; scale/dimensions must be inspected before metric extraction",
          "source_id": "pa-reid-nrhp-2003"
        }
      ]
    },
    {
      "id": "pa-2110-30",
      "address": "2110 S. Prairie Avenue",
      "name": "Harriet P. Rees residence",
      "construction": "1888 (marker); 1887 (Reid nomination lead)",
      "demolition": null,
      "architect": "Cobb & Frost",
      "notes": "Historical address; do not use relocated modern site for 1904. Date discrepancy requires Rees nomination. | 1904 Blue Book candidate: Edson Keith Jr. household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_outside",
        "B-reid_nom",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1888 (marker); 1887 (Reid nomination lead)",
          "source_ids": [
            "B-marker_outside",
            "B-reid_nom",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2110,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Edson Keith Jr. household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2018-s.-calumet-avenue-31",
      "address": "2018 S. Calumet Avenue",
      "name": "Calvin T. Wheeler / Joseph A. Kohn residence",
      "construction": "1870",
      "demolition": null,
      "architect": "Otis L. Wheelock",
      "notes": "1880s copper bay alteration. | Dimensional evidence: third-floor ceiling: 11 ft (1999 observation); basement ceiling: 10 ft (1999 observation); historic chimneys: 4 count (Historic/modern distinction stated by nomination; phase-date missing); plan: 1 sheet (Nomination-era surveyed layout, includes later fire stair)",
      "target1904": "inferred present",
      "scope": "adjacent",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_outside",
        "pa-wheeler-kohn-nrhp-1999"
      ],
      "built_year": 1870,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1870",
          "source_ids": [
            "B-marker_outside"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": false,
      "measurements": [
        {
          "source_file": "wheeler-kohn-nrhp-1999.pdf",
          "pdf_page": 10,
          "address": "2018 S. Calumet Avenue",
          "property": "third-floor ceiling",
          "value": 11,
          "unit": "ft",
          "note": "Mansard floor has smaller rooms than second floor.",
          "temporal_qualification": "1999 observation",
          "source_id": "pa-wheeler-kohn-nrhp-1999"
        },
        {
          "source_file": "wheeler-kohn-nrhp-1999.pdf",
          "pdf_page": 10,
          "address": "2018 S. Calumet Avenue",
          "property": "basement ceiling",
          "value": 10,
          "unit": "ft",
          "note": "Kitchen and servants quarters identified.",
          "temporal_qualification": "1999 observation",
          "source_id": "pa-wheeler-kohn-nrhp-1999"
        },
        {
          "source_file": "wheeler-kohn-nrhp-1999.pdf",
          "pdf_page": 6,
          "address": "2018 S. Calumet Avenue",
          "property": "historic chimneys",
          "value": 4,
          "unit": "count",
          "note": "Only two survived at nomination.",
          "temporal_qualification": "Historic/modern distinction stated by nomination; phase-date missing",
          "source_id": "pa-wheeler-kohn-nrhp-1999"
        },
        {
          "source_file": "wheeler-kohn-nrhp-1999.pdf",
          "pdf_page": 22,
          "address": "2018 S. Calumet Avenue",
          "property": "plan",
          "value": 1,
          "unit": "sheet",
          "note": "Includes two parlors, vestibule, porch, dining room, hall and pantry.",
          "temporal_qualification": "Nomination-era surveyed layout, includes later fire stair",
          "source_id": "pa-wheeler-kohn-nrhp-1999"
        }
      ]
    },
    {
      "id": "pa-1936-s.-michigan-avenue-32",
      "address": "1936 S. Michigan Avenue",
      "name": "Second Presbyterian Church",
      "construction": "1872–1874",
      "demolition": null,
      "architect": "James Renwick; interior Howard Van Doren Shaw and Frederic Clay Bartlett",
      "notes": "1900 sanctuary fire and subsequent Arts and Crafts rebuilding; 1904 interior must be postfire.",
      "target1904": "inferred present",
      "scope": "adjacent",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-marker_outside"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1872–1874",
          "source_ids": [
            "B-marker_outside"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1816-33",
      "address": "1816 S. Prairie Avenue",
      "name": "Charles M. Henderson residence",
      "construction": null,
      "demolition": null,
      "architect": null,
      "notes": "Address/name identification only; exact lifetime and 1904 household unresolved. | 1904 Blue Book candidate: Mrs. Charles M. Henderson. OCR-derived, selected names only; page verification pending.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-city1973",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "unresolved",
      "events": [],
      "directory_candidates": [
        {
          "address": 1816,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. Charles M. Henderson",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1906-34",
      "address": "1906 S. Prairie Avenue",
      "name": "Edson Keith residence",
      "construction": null,
      "demolition": null,
      "architect": null,
      "notes": "Address/name identification only; 1904 residents require directory. | 1904 Blue Book candidate: Mrs. Edson Keith. OCR-derived, selected names only; page verification pending.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-city1973",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "unresolved",
      "events": [],
      "directory_candidates": [
        {
          "address": 1906,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. Edson Keith",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1923-35",
      "address": "1923 S. Prairie Avenue",
      "name": "Charles P. Kellogg residence",
      "construction": null,
      "demolition": "1933",
      "architect": null,
      "notes": "Construction and target occupancy unresolved. | 1904 Blue Book candidate: Mrs. C. P. Kellogg; Mrs. Lois Kellogg. OCR-derived, selected names only; page verification pending.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-news",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": 1933,
      "status_1904": "unresolved",
      "events": [
        {
          "type": "loss",
          "date_text": "1933",
          "source_ids": [
            "B-news",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1923,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. C. P. Kellogg; Mrs. Lois Kellogg",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2021-36",
      "address": "2021 S. Prairie Avenue",
      "name": "Benjamin Adams / James L. High residence",
      "construction": "late 1870s",
      "demolition": null,
      "architect": null,
      "notes": "High purchase 1886; 16 rooms, 2.5 stories reported. | 1904 Blue Book candidate: Mrs. James L. High household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-city1973",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "late 1870s",
          "source_ids": [
            "B-city1973",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2021,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. James L. High household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2027-37",
      "address": "2027 S. Prairie Avenue",
      "name": "Silas B. Cobb-associated residence",
      "construction": null,
      "demolition": null,
      "architect": null,
      "notes": "Historical association only; owner versus daughter’s household must be resolved. | 1904 Blue Book candidate: Mrs. J. J. Borland; Chauncey Blair Borland; Bruce Borland. OCR-derived, selected names only; page verification pending.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-city1973",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "unresolved",
      "events": [],
      "directory_candidates": [
        {
          "address": 2027,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. J. J. Borland; Chauncey Blair Borland; Bruce Borland",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2036-38",
      "address": "2036 S. Prairie Avenue",
      "name": "Ebenezer Buckingham residence",
      "construction": null,
      "demolition": null,
      "architect": null,
      "notes": "Address/name identification only. | 1904 Blue Book candidate: E. Buckingham household; Clarence Buckingham. OCR-derived, selected names only; page verification pending.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-city1973",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "unresolved",
      "events": [],
      "directory_candidates": [
        {
          "address": 2036,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "E. Buckingham household; Clarence Buckingham",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2112-39",
      "address": "2112 S. Prairie Avenue",
      "name": "Max M. Rothschild residence",
      "construction": null,
      "demolition": "1934",
      "architect": null,
      "notes": "Construction and target occupants unresolved. | 1904 Blue Book candidate: Mrs. M. M. Rothschild household; Jesse Rothschild. OCR-derived, selected names only; page verification pending.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-news",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": 1934,
      "status_1904": "unresolved",
      "events": [
        {
          "type": "loss",
          "date_text": "1934",
          "source_ids": [
            "B-news",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2112,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. M. M. Rothschild household; Jesse Rothschild",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2108-40",
      "address": "2108 S. Prairie Avenue",
      "name": "Mark Kimball residence",
      "construction": null,
      "demolition": "1933",
      "architect": null,
      "notes": "Do not confuse with William Kimball at 1801.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-news"
      ],
      "built_year": null,
      "demolished_year": 1933,
      "status_1904": "unresolved",
      "events": [
        {
          "type": "loss",
          "date_text": "1933",
          "source_ids": [
            "B-news"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2109-41",
      "address": "2109 S. Prairie Avenue",
      "name": "Robert Roloson residence",
      "construction": null,
      "demolition": "1933",
      "architect": null,
      "notes": "Construction and target occupants unresolved. | 1904 Blue Book candidate: Robert W. Roloson. OCR-derived, selected names only; page verification pending.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-news",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": 1933,
      "status_1904": "unresolved",
      "events": [
        {
          "type": "loss",
          "date_text": "1933",
          "source_ids": [
            "B-news",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2109,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Robert W. Roloson",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2130-42",
      "address": "2130 S. Prairie Avenue",
      "name": "Thomas Murdoch residence",
      "construction": null,
      "demolition": "1933",
      "architect": null,
      "notes": "Construction and target occupants unresolved.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-news"
      ],
      "built_year": null,
      "demolished_year": 1933,
      "status_1904": "unresolved",
      "events": [
        {
          "type": "loss",
          "date_text": "1933",
          "source_ids": [
            "B-news"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1702-43",
      "address": "1702 S. Prairie Avenue",
      "name": "John Nichols Staples / Turlington W. Harvey residence",
      "construction": "1853",
      "demolition": "1899",
      "architect": null,
      "notes": "1880 remodeling. Replaced by Glessner children’s townhouses; exclude old house in 1904.",
      "target1904": "demolished before 1904",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-early2"
      ],
      "built_year": 1853,
      "demolished_year": 1899,
      "status_1904": "demolished before 1904",
      "events": [
        {
          "type": "construction",
          "date_text": "1853",
          "source_ids": [
            "B-early2"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1899",
          "source_ids": [
            "B-early2"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": true,
      "measurements": []
    },
    {
      "id": "pa-1804–1808-s.-prairie-avenue-(predecessors)-44",
      "address": "1804–1808 S. Prairie Avenue (predecessors)",
      "name": "Horatio Hitchcock / A. J. Galloway double houses",
      "construction": "circa 1858",
      "demolition": "1886",
      "architect": null,
      "notes": "Replaced by Glessner and O. R. Keith residences; illustrated 1874; exclude in target year. | 1904 Blue Book candidate: Stanley Field household. OCR-derived, selected names only; page verification pending.",
      "target1904": "demolished before 1904",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-early2",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": 1886,
      "status_1904": "demolished before 1904",
      "events": [
        {
          "type": "construction",
          "date_text": "circa 1858",
          "source_ids": [
            "B-early2",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1886",
          "source_ids": [
            "B-early2",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1808,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Stanley Field household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": true,
      "measurements": []
    },
    {
      "id": "pa-1637-45",
      "address": "1637 S. Prairie Avenue",
      "name": "Cornelia Grosvenor / Jesse Spalding residence",
      "construction": "1862",
      "demolition": null,
      "architect": null,
      "notes": "Major Spalding remodeling obscured initial Italianate design; target phase unresolved. | 1904 Blue Book candidate: William Gold Hibbard Jr. household. OCR-derived, selected names only; page verification pending.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-early4",
        "civic-bluebook-1904"
      ],
      "built_year": 1862,
      "demolished_year": null,
      "status_1904": "unresolved",
      "events": [
        {
          "type": "construction",
          "date_text": "1862",
          "source_ids": [
            "B-early4",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1637,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "William Gold Hibbard Jr. household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1709-46",
      "address": "1709 S. Prairie Avenue",
      "name": "Nicholas O. Williams residence",
      "construction": "1862",
      "demolition": "circa 1882",
      "architect": "W. W. Boyington",
      "notes": "Superseded by Palmer Kellogg house. | 1904 Blue Book candidate: Jesse Spalding household. OCR-derived, selected names only; page verification pending.",
      "target1904": "demolished before 1904",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-early4",
        "civic-bluebook-1904"
      ],
      "built_year": 1862,
      "demolished_year": null,
      "status_1904": "demolished before 1904",
      "events": [
        {
          "type": "construction",
          "date_text": "1862",
          "source_ids": [
            "B-early4",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "circa 1882",
          "source_ids": [
            "B-early4",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1709,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Jesse Spalding household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": true,
      "measurements": []
    },
    {
      "id": "pa-1709-s.-prairie-avenue-(successor)-47",
      "address": "1709 S. Prairie Avenue (successor)",
      "name": "Palmer Kellogg residence",
      "construction": "circa 1882",
      "demolition": null,
      "architect": "Burnham & Root",
      "notes": "Replacement of Williams house; demolition unknown. | 1904 Blue Book candidate: Jesse Spalding household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-early4",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "circa 1882",
          "source_ids": [
            "B-early4",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1709,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Jesse Spalding household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1635-48",
      "address": "1635 S. Prairie Avenue",
      "name": "Col. Robert Forsyth residence",
      "construction": "1863",
      "demolition": "by early 1900s",
      "architect": null,
      "notes": "Do not assume present in 1904; requires demolition permit.",
      "target1904": "uncertain; likely absent",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-early4"
      ],
      "built_year": 1863,
      "demolished_year": null,
      "status_1904": "uncertain; likely absent",
      "events": [
        {
          "type": "construction",
          "date_text": "1863",
          "source_ids": [
            "B-early4"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "by early 1900s",
          "source_ids": [
            "B-early4"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1736-49",
      "address": "1736 S. Prairie Avenue",
      "name": "Granville S. Ingraham / Hugh McBirney residence",
      "construction": "1864",
      "demolition": null,
      "architect": null,
      "notes": "Mansard may be later addition; phase unresolved. | 1904 Blue Book candidate: Hugh McBirney household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-early4",
        "civic-bluebook-1904"
      ],
      "built_year": 1864,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1864",
          "source_ids": [
            "B-early4",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1736,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Hugh McBirney household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1630-50",
      "address": "1630 S. Prairie Avenue",
      "name": "Small early residence; owner unresolved",
      "construction": "Civil War era",
      "demolition": null,
      "architect": null,
      "notes": "Known to survive into twentieth century; target exact form unknown.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-early4"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "unresolved",
      "events": [
        {
          "type": "construction",
          "date_text": "Civil War era",
          "source_ids": [
            "B-early4"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1726–1728-s.-prairie-avenue-(predecessor)-51",
      "address": "1726–1728 S. Prairie Avenue (predecessor)",
      "name": "Early frame double house",
      "construction": "Civil War era",
      "demolition": "1880s",
      "architect": null,
      "notes": "Record replacement properties from map; predecessor excluded in target year. | 1904 Blue Book candidate: James R. Walker household. OCR-derived, selected names only; page verification pending.",
      "target1904": "demolished before 1904",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-early4",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "demolished before 1904",
      "events": [
        {
          "type": "construction",
          "date_text": "Civil War era",
          "source_ids": [
            "B-early4",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1880s",
          "source_ids": [
            "B-early4",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1726,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "James R. Walker household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": true,
      "measurements": []
    },
    {
      "id": "pa-1700-52",
      "address": "1700 S. Prairie Avenue",
      "name": "Blewett and Frances Glessner Lee townhouse",
      "construction": "1901 design; occupied March 4, 1902",
      "demolition": null,
      "architect": "Shepley, Rutan & Coolidge",
      "notes": "Mirror of 1706; Georgian Revival; 1904 occupants still require census/directory corroboration. | 1904 Blue Book candidate: Blewett Lee household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-collection",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1901 design; occupied March 4, 1902",
          "source_ids": [
            "B-collection",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1700,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Blewett Lee household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1706-53",
      "address": "1706 S. Prairie Avenue",
      "name": "George and Alice Glessner townhouse",
      "construction": "1901 design",
      "demolition": null,
      "architect": "Shepley, Rutan & Coolidge",
      "notes": "Mirror of 1700; Georgian Revival; separate from earlier 1702 Staples building. | 1904 Blue Book candidate: J. G. M. Glessner household. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-collection",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1901 design",
          "source_ids": [
            "B-collection",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1706,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "J. G. M. Glessner household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1708-54",
      "address": "1708 S. Prairie Avenue",
      "name": "James and Narcissa Thorne residence",
      "construction": null,
      "demolition": null,
      "architect": null,
      "notes": "1911 address attestation only; do not project occupancy to 1904. | 1904 Blue Book candidate: A. A. Carpenter Jr. household. OCR-derived, selected names only; page verification pending.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-christmas",
        "civic-bluebook-1904"
      ],
      "built_year": null,
      "demolished_year": null,
      "status_1904": "unresolved",
      "events": [],
      "directory_candidates": [
        {
          "address": 1708,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "A. A. Carpenter Jr. household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1720-55",
      "address": "1720 S. Prairie Avenue",
      "name": "John Tyrrell / James Walker residence",
      "construction": "1868",
      "demolition": "1910",
      "architect": "Otis L. Wheelock",
      "notes": "Tyrrell sold 1878; encyclopedia marks 1910 loss. Italianate frame. | 1904 Blue Book candidate: Mrs. James M. Walker. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-burley",
        "B-worlds",
        "civic-bluebook-1904"
      ],
      "built_year": 1868,
      "demolished_year": 1910,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1868",
          "source_ids": [
            "B-burley",
            "B-worlds",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1910",
          "source_ids": [
            "B-burley",
            "B-worlds",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1720,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. James M. Walker",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2008-s.-calumet-avenue-56",
      "address": "2008 S. Calumet Avenue",
      "name": "Philander C. Hanford residence",
      "construction": "1883",
      "demolition": "1953",
      "architect": "Henry S. Jaffray; interiors Isaac Scott",
      "notes": "Brownstone; double basement; museum holds salvaged pieces. Excavation photographs from 2001 useful for footprint.",
      "target1904": "inferred present",
      "scope": "adjacent",
      "occupancy1904": null,
      "geometry_status": "unmeasured; footprint and heights require map/plan reconciliation",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan unless otherwise stated",
      "source_ids": [
        "B-hanford"
      ],
      "built_year": 1883,
      "demolished_year": 1953,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1883",
          "source_ids": [
            "B-hanford"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1953",
          "source_ids": [
            "B-hanford"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2031-nrhp",
      "address": "2031 S. Prairie Avenue",
      "name": "Townhouse; historic owner unresolved",
      "construction": "1869",
      "demolition": null,
      "architect": null,
      "notes": "Nomination PDF p13 identifies trio at 2031–2035, 25-foot lots and Lemont limestone fronts. Exact 1904 survival/occupants require map and directory. | 1904 Blue Book candidate: Samuel A. Tolman household. OCR-derived, selected names only; page verification pending. | Dimensional evidence: rowhouse lot width: 25 ft (Historic synthesis; construction claim needs period confirmation)",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "25-foot lot width from nomination; footprint and height unmeasured",
      "confidence": "source-backed historical identification; target-year existence unverified",
      "source_ids": [
        "B-reid_nom_acquired",
        "civic-bluebook-1904",
        "pa-reid-nrhp-2003"
      ],
      "built_year": 1869,
      "demolished_year": null,
      "status_1904": "unresolved",
      "events": [
        {
          "type": "construction",
          "date_text": "1869",
          "source_ids": [
            "B-reid_nom_acquired",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2031,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Samuel A. Tolman household",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": [
        {
          "source_file": "reid-nrhp-2003.pdf",
          "pdf_page": 13,
          "address": "2031–2035 S. Prairie Avenue",
          "property": "rowhouse lot width",
          "value": 25,
          "unit": "ft",
          "note": "Three townhouses dated 1869 with Lemont limestone fronts.",
          "temporal_qualification": "Historic synthesis; construction claim needs period confirmation",
          "source_id": "pa-reid-nrhp-2003"
        }
      ]
    },
    {
      "id": "pa-2033-nrhp",
      "address": "2033 S. Prairie Avenue",
      "name": "Townhouse; historic owner unresolved",
      "construction": "1869",
      "demolition": null,
      "architect": null,
      "notes": "Nomination PDF p13 identifies trio at 2031–2035, 25-foot lots and Lemont limestone fronts. Exact 1904 survival/occupants require map and directory. | 1904 Blue Book candidate: F. R. Otis household; Charles T. Otis; Lucius J. Otis. OCR-derived, selected names only; page verification pending.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "25-foot lot width from nomination; footprint and height unmeasured",
      "confidence": "source-backed historical identification; target-year existence unverified",
      "source_ids": [
        "B-reid_nom_acquired",
        "civic-bluebook-1904"
      ],
      "built_year": 1869,
      "demolished_year": null,
      "status_1904": "unresolved",
      "events": [
        {
          "type": "construction",
          "date_text": "1869",
          "source_ids": [
            "B-reid_nom_acquired",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2033,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "F. R. Otis household; Charles T. Otis; Lucius J. Otis",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-2035-nrhp",
      "address": "2035 S. Prairie Avenue",
      "name": "Townhouse; historic owner unresolved",
      "construction": "1869",
      "demolition": null,
      "architect": null,
      "notes": "Nomination PDF p13 identifies trio at 2031–2035, 25-foot lots and Lemont limestone fronts. Exact 1904 survival/occupants require map and directory. | 1904 Blue Book candidate: Mrs. H. O. Stone. OCR-derived, selected names only; page verification pending.",
      "target1904": "unresolved",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "25-foot lot width from nomination; footprint and height unmeasured",
      "confidence": "source-backed historical identification; target-year existence unverified",
      "source_ids": [
        "B-reid_nom_acquired",
        "civic-bluebook-1904"
      ],
      "built_year": 1869,
      "demolished_year": null,
      "status_1904": "unresolved",
      "events": [
        {
          "type": "construction",
          "date_text": "1869",
          "source_ids": [
            "B-reid_nom_acquired",
            "civic-bluebook-1904"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 2035,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. H. O. Stone",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1609-1904-correction",
      "name": "1609 Prairie · house restored for 1904",
      "address": "1609 S. Prairie Avenue",
      "architect": null,
      "built_year": null,
      "demolished_year": null,
      "construction": "By 1886; exact date unresolved",
      "demolition": "After 1904 and by 1911",
      "source_ids": [
        "EXPERT-20260923",
        "MAP-1886"
      ],
      "status_1904": "present per supplied expert guidance",
      "scope": "core",
      "notes": "Owner and elevations unresolved; do not use 1911 replacement/empty lot. Basic footprint evidence only.",
      "events": [
        {
          "type": "loss",
          "date_text": "1905–1911 interval; precise year not established",
          "source_ids": [
            "EXPERT-20260923"
          ]
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1611-1904-correction",
      "name": "1611 Prairie · house restored for 1904",
      "address": "1611 S. Prairie Avenue",
      "architect": null,
      "built_year": null,
      "demolished_year": null,
      "construction": "By 1886; exact date unresolved",
      "demolition": "After 1904 and by 1911",
      "source_ids": [
        "EXPERT-20260923",
        "MAP-1886"
      ],
      "status_1904": "present per supplied expert guidance",
      "scope": "core",
      "notes": "Owner and elevations unresolved; do not use 1911 replacement/empty lot. Basic footprint evidence only.",
      "events": [
        {
          "type": "loss",
          "date_text": "1905–1911 interval; precise year not established",
          "source_ids": [
            "EXPERT-20260923"
          ]
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1620-1904-correction",
      "name": "1620 Prairie · house restored for 1904",
      "address": "1620 S. Prairie Avenue",
      "architect": null,
      "built_year": null,
      "demolished_year": null,
      "construction": "By 1886; exact date unresolved",
      "demolition": "After 1904 and by 1911",
      "source_ids": [
        "EXPERT-20260923",
        "MAP-1886"
      ],
      "status_1904": "present per supplied expert guidance",
      "scope": "core",
      "notes": "Owner and elevations unresolved; do not use 1911 replacement/empty lot. Basic footprint evidence only.",
      "events": [
        {
          "type": "loss",
          "date_text": "1905–1911 interval; precise year not established",
          "source_ids": [
            "EXPERT-20260923"
          ]
        }
      ],
      "excluded_1904": false,
      "measurements": []
    },
    {
      "id": "pa-1945-armour-corwith",
      "address": "1945 S. Prairie Avenue",
      "name": "George Armour / Corwith residence",
      "construction": "1872",
      "demolition": "1931",
      "architect": "Treat & Foltz",
      "notes": "Built for George Armour, grain elevator owner; after a long Corwith ownership razed in 1931 (Glessner House, reading the 1887 Ward Bros. view, where it stands at far right). Minted by the sheet 28 census (T-1841). | 1904 Blue Book candidate: Mrs. Henry Corwith; Charles R. Corwith. OCR-derived, selected names only; page verification pending.",
      "target1904": "inferred present",
      "scope": "core",
      "occupancy1904": null,
      "geometry_status": "unmeasured; 1911 sheet 28 draws a three-storey brick house with a rear two-storey range and a detached two-storey stable",
      "confidence": "source-backed identification; 1904 existence inferred from lifespan (1872-1931) and the 1911 map",
      "source_ids": [
        "G23",
        "civic-bluebook-1904",
        "MAP-1911-28"
      ],
      "built_year": 1872,
      "demolished_year": 1931,
      "status_1904": "inferred present",
      "events": [
        {
          "type": "construction",
          "date_text": "1872",
          "source_ids": [
            "G23"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        },
        {
          "type": "loss",
          "date_text": "1931",
          "source_ids": [
            "G23"
          ],
          "confidence": "reported; preserve ranges/conflicts"
        }
      ],
      "directory_candidates": [
        {
          "address": 1945,
          "street": "Prairie Avenue",
          "year_label": 1904,
          "source_id": "civic-bluebook-1904",
          "source_locator": "printed pp.186–187; PDF pp.188–189",
          "listed_people": "Mrs. Henry Corwith; Charles R. Corwith",
          "verification": "OCR-derived factual candidate; visual source-page check pending",
          "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
        }
      ],
      "excluded_1904": false,
      "measurements": []
    }
  ],
  "sources": [
    {
      "id": "B-marker_north",
      "title": "Lost Houses: 1600–1700 blocks",
      "url": "https://www.hmdb.org/m.asp?m=308722",
      "kind": "Historic interpretive marker transcription",
      "date": "retrospective; see source",
      "notes": "Historic interpretive marker transcription",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-marker_west",
      "title": "Lost Houses: 1800–1900 west",
      "url": "https://www.hmdb.org/m.asp?m=308706",
      "kind": "Historic interpretive marker transcription",
      "date": "retrospective; see source",
      "notes": "Historic interpretive marker transcription",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-marker_east",
      "title": "Lost Houses: 1800–1900 east",
      "url": "https://www.hmdb.org/m.asp?m=308709",
      "kind": "Historic interpretive marker transcription",
      "date": "retrospective; see source",
      "notes": "Historic interpretive marker transcription",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-marker_south",
      "title": "Lost Houses: 2000–2100 blocks",
      "url": "https://www.hmdb.org/m.asp?m=308703",
      "kind": "Historic interpretive marker transcription",
      "date": "retrospective; see source",
      "notes": "Historic interpretive marker transcription",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-marker_survivors",
      "title": "A Heritage Preserved",
      "url": "https://www.hmdb.org/m.asp?m=308723",
      "kind": "Historic interpretive marker transcription",
      "date": "retrospective; see source",
      "notes": "Historic interpretive marker transcription",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-marker_outside",
      "title": "Outside the District",
      "url": "https://www.hmdb.org/m.asp?m=308724",
      "kind": "Historic interpretive marker transcription",
      "date": "retrospective; see source",
      "notes": "Historic interpretive marker transcription",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-city1973",
      "title": "Prairie Avenue: Chicago’s First Gold Coast, March 1973",
      "url": "https://reports.chicagolandmarkreports.org/prairie-avenue-district.pdf",
      "kind": "City Commission on Chicago Historical and Architectural Landmarks research report",
      "date": "retrospective; see source",
      "notes": "City Commission on Chicago Historical and Architectural Landmarks research report",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-early2",
      "title": "Early History of Prairie Avenue, Part II",
      "url": "https://glessnerhouse.blogspot.com/2020/06/the-early-history-of-prairie-avenue_23.html",
      "kind": "Glessner House Museum research, 2020-06-23",
      "date": "retrospective; see source",
      "notes": "Glessner House Museum research, 2020-06-23",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-early4",
      "title": "Early History of Prairie Avenue, Part IV",
      "url": "https://glessnerhouse.blogspot.com/2020/07/the-early-history-of-prairie-avenue.html",
      "kind": "Glessner House Museum research, 2020-07-07",
      "date": "retrospective; see source",
      "notes": "Glessner House Museum research, 2020-07-07",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-news",
      "title": "Prairie Avenue in the News",
      "url": "https://fannyglessner.wordpress.com/the-household-2/the-neighborhood/prairie-avenue-in-the-news/",
      "kind": "Glessner House institutional research archive",
      "date": "retrospective; see source",
      "notes": "Glessner House institutional research archive",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-collection",
      "title": "The Collection",
      "url": "https://www.glessnerhouse.org/the-collection",
      "kind": "Glessner House Museum",
      "date": "retrospective; see source",
      "notes": "Glessner House Museum",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-kimball",
      "title": "The Kimball House on Chicago’s Prairie Avenue",
      "url": "https://glessnerhouse.blogspot.com/2013/05/the-kimball-house-on-chicagos-prairie.html",
      "kind": "Glessner House Museum, search-index text retrieved; full open rate-limited",
      "date": "retrospective; see source",
      "notes": "Glessner House Museum, search-index text retrieved; full open rate-limited",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-hanford",
      "title": "Unearthing Hanford",
      "url": "https://glessnerhouse.blogspot.com/2015/03/unearthing-hanford.html",
      "kind": "Glessner House Museum, 2015-03-30",
      "date": "retrospective; see source",
      "notes": "Glessner House Museum, 2015-03-30",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-worlds",
      "title": "The Worlds of Prairie Avenue",
      "url": "https://www.encyclopedia.chicagohistory.org/pages/10431_em.html",
      "kind": "Encyclopedia of Chicago; search-index text retrieved, open timed out",
      "date": "retrospective; see source",
      "notes": "Encyclopedia of Chicago; search-index text retrieved, open timed out",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-burley",
      "title": "Burley and Tyrrell, January 2022",
      "url": "https://glessnerhouse.blogspot.com/2022/01/",
      "kind": "Glessner House Museum research",
      "date": "retrospective; see source",
      "notes": "Glessner House Museum research",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-christmas",
      "title": "Glessner House 2021 articles / Christmas 1911",
      "url": "https://glessnerhouse.blogspot.com/2021/",
      "kind": "Glessner House Museum research",
      "date": "retrospective; see source",
      "notes": "Glessner House Museum research",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-reid_nom",
      "title": "Reid House National Register nomination",
      "url": "https://nara-media.s3.amazonaws.com/electronic-records/rg-079/NPS_IL/03000783.pdf",
      "kind": "National Register nomination; search-index lead, full 38.7 MB PDF not retrieved",
      "date": "retrospective; see source",
      "notes": "National Register nomination; search-index lead, full 38.7 MB PDF not retrieved",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "B-reid_nom_acquired",
      "title": "Reid House National Register nomination, 2003",
      "url": "https://nara-media.s3.amazonaws.com/electronic-records/rg-079/NPS_IL/03000783.pdf",
      "kind": "National Register primary nomination, fully acquired",
      "date": "retrospective; see source",
      "notes": "National Register primary nomination, fully acquired",
      "rights_status": "citation_only",
      "retrieval_status": "reviewed research source; see dossier for reading limits"
    },
    {
      "id": "G01",
      "title": "John J. Glessner House, HABS IL-1015",
      "url": "https://www.loc.gov/item/il0118/",
      "kind": "federal architectural survey",
      "date": "{\"construction\": \"1886–1887\", \"documentation\": \"after 1933\"}",
      "notes": "Catalog identifies 17 photographs, six measured drawings, 27 data pages, one caption page; unprocessed field notes FN-128. Call number HABS ILL,16-CHIG,17-. Later survey requires phase reconciliation; copied historical images may have separate rights. Item catalog verified via indexed metadata; image/PDF downloads returned 403. Acquisition update: report and six measured sheets now stored. Earlier 403 attempts remain in dossier as history; 17-photo series and caption page acquired 2026-09-28 (pa-glessner-habs-photo-01…17, pa-glessner-habs-captions).",
      "rights_status": "item_level_review",
      "retrieval_status": "Catalog reviewed; all six measured drawings and 27-page report subsequently acquired",
      "local_path": "research/public/glessner-habs-data.pdf"
    },
    {
      "id": "G01-D1",
      "title": "Title sheet with neighborhood plan",
      "url": "https://www.loc.gov/resource/hhh.il0118.sheet/?sp=1",
      "kind": "HABS measured drawing",
      "date": "{\"documentation\": \"after 1933\"}",
      "notes": "Original measured drawing acquired. Survey date and alterations must be reconciled before using in 1904 geometry.",
      "rights_status": "item_level_review",
      "retrieval_status": "downloaded original measured sheet",
      "local_path": "research/public/glessner-habs-sheet-1.tif"
    },
    {
      "id": "G01-D4",
      "title": "Section A-A",
      "url": "https://www.loc.gov/resource/hhh.il0118.sheet/?sp=4",
      "kind": "HABS measured drawing",
      "date": "{\"documentation\": \"after 1933\"}",
      "notes": "Original measured drawing acquired. Survey date and alterations must be reconciled before using in 1904 geometry.",
      "rights_status": "item_level_review",
      "retrieval_status": "downloaded original measured sheet",
      "local_path": "research/public/glessner-habs-sheet-4.tif"
    },
    {
      "id": "G01-D5",
      "title": "Masonry details",
      "url": "https://www.loc.gov/resource/hhh.il0118.sheet/?sp=5",
      "kind": "HABS measured drawing",
      "date": "{\"documentation\": \"after 1933\"}",
      "notes": "Original measured drawing acquired. Survey date and alterations must be reconciled before using in 1904 geometry.",
      "rights_status": "item_level_review",
      "retrieval_status": "downloaded original measured sheet",
      "local_path": "research/public/glessner-habs-sheet-5.tif"
    },
    {
      "id": "G01-D6",
      "title": "Front (east) elevation",
      "url": "https://www.loc.gov/resource/hhh.il0118.sheet/?sp=6",
      "kind": "HABS measured drawing",
      "date": "{\"documentation\": \"after 1933\"}",
      "notes": "Original measured drawing acquired. Survey date and alterations must be reconciled before using in 1904 geometry.",
      "rights_status": "item_level_review",
      "retrieval_status": "downloaded original measured sheet",
      "local_path": "research/public/glessner-habs-sheet-6.tif"
    },
    {
      "id": "G01-P12",
      "title": "Photocopy of preliminary design, courtesy Houghton Library",
      "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=12",
      "kind": "HABS copy of historic architectural design",
      "date": "{}",
      "notes": "Links the LOC survey to the Harvard Richardson originals. Preliminary design is not proof of as-built form. Same drawing as Houghton GLE B2 (pa-glessner-houghton-gle-b2), compared visually 2026-09-28.",
      "rights_status": "item_level_review",
      "retrieval_status": "indexed-record-verified; acquired 2026-09-28 as pa-glessner-habs-photo-12"
    },
    {
      "id": "G01-P",
      "title": "HABS photo series",
      "url": "https://www.loc.gov/resource/hhh.il0118.photos?st=gallery",
      "kind": "federal photo collection",
      "date": "{}",
      "notes": "17 cataloged photographs. Individual dates and captions must be read before assigning chronological state. Acquired 2026-09-28: all 17, captioned from their LOC records and the index to photographs.",
      "rights_status": "item_level_review",
      "retrieval_status": "indexed-record-verified; all 17 acquired 2026-09-28 as pa-glessner-habs-photo-01…17"
    },
    {
      "id": "G01-T",
      "title": "HABS data PDF",
      "url": "https://cdn.loc.gov/master/pnp/habshaer/il/il0100/il0118/data/il0118data.pdf",
      "kind": "federal survey report",
      "date": "{}",
      "notes": "Cataloged 27-page report; acquisition target. No report measurements transcribed because binary retrieval failed. Acquisition update: report and six measured sheets now stored. Earlier 403 attempts remain in dossier as history; 17-photo series and caption page acquired 2026-09-28.",
      "rights_status": "item_level_review",
      "retrieval_status": "Catalog reviewed; all six measured drawings and 27-page report subsequently acquired",
      "local_path": "research/public/glessner-habs-data.pdf"
    },
    {
      "id": "G01-C",
      "title": "HABS photo captions PDF",
      "url": "https://cdn.loc.gov/master/pnp/habshaer/il/il0100/il0118/data/il0118cap.pdf",
      "kind": "federal survey caption list",
      "date": "{}",
      "notes": "Caption list acquisition target. Must reconcile photographed dates, views, and alterations.",
      "rights_status": "item_level_review",
      "retrieval_status": "download-blocked-403 on 2026-09-26; acquired 2026-09-28 as pa-glessner-habs-captions"
    },
    {
      "id": "G02",
      "title": "The House",
      "url": "https://www.glessnerhouse.org/the-house",
      "kind": "building custodian history",
      "date": "{}",
      "notes": "Rusticated Braggville pink granite faces a brick structure above Illinois dolomite. E-shaped plan fronts east/north/west lot edges; south courtyard admits light. Over 17,000 square feet; service space exceeds half. Three family, two guest, eight servant bedrooms; eleven fireplaces; seven staircases. Post-family institutional use began after 1936; 1946 conversion, 1966 preservation purchase. Granite thickness stated 8–10 inches here conflicts with about seven inches in G03; modern description is not a dated 1904 inventory.",
      "rights_status": "check_required",
      "retrieval_status": "web-reviewed"
    },
    {
      "id": "G03",
      "title": "The Collection — architectural and household evidence",
      "url": "https://www.glessnerhouse.org/the-collection",
      "kind": "museum object catalog essays",
      "date": "{\"Richardson sketch\": \"1885-05-14\", \"Story of a House\": \"1923\"}",
      "notes": "Richardson sketch dated May 14, 1885. John Glessner’s 1923 memoir includes 25 typed pages, floorplans and Kaufmann & Fabry photographs, including two unique Fanny-bedroom views. Kitchen annunciator used twelve call buttons. A 1965 sale flyer records institutional plans and paved courtyard; museum corrects its stone-veneer claim to about seven inches. Collection essays span many years. Date every object; 1923 photographs and 1965 plans are not direct 1904 snapshots. Original memoir not fully acquired.",
      "rights_status": "check_required",
      "retrieval_status": "web-reviewed"
    },
    {
      "id": "G04",
      "title": "Exterior from Inland Architect",
      "url": "https://www.glessnerhouse.org/exterior-from-inland-architect",
      "kind": "museum reproduction of contemporary publication",
      "date": "{\"publication\": \"1888-02\", \"publication_detail\": \"The Inland Architect and News Record, vol. XI no. 1\"}",
      "notes": "Period exterior photograph and first-floor sketch published two months after the family moved in. Provides 1888 baseline, not automatic proof of unchanged 1904 details.",
      "rights_status": "check_required",
      "retrieval_status": "web-reviewed"
    },
    {
      "id": "G05",
      "title": "Porte Cochere doors",
      "url": "https://www.glessnerhouse.org/porte-cochere-doors",
      "kind": "museum reproduction of family photograph",
      "date": "{\"photo\": \"circa 1888\", \"photographer\": \"George Glessner\"}",
      "notes": "Period front driveway doors; these sheltered carriage arrivals. Museum used the photograph to recreate doors removed during the 1950s for an overhead garage door. Historic photo is direct baseline; present restored doors should be cross-checked against it.",
      "rights_status": "check_required",
      "retrieval_status": "web-reviewed"
    },
    {
      "id": "G06",
      "title": "Double Bough",
      "url": "https://www.glessnerhouse.org/double-bough",
      "kind": "museum interior conservation history",
      "date": "{\"pattern\": \"1891\", \"installation\": \"1892\", \"repapering\": \"1916\", \"reproduction\": \"2015\"}",
      "notes": "Corner guest-room Morris & Co. wallpaper selected after electrification in 1892, selected again in 1916; current paper is a 2015 reproduction. Supports 1904 pattern attribution, not proof of exact surviving shade or condition.",
      "rights_status": "check_required",
      "retrieval_status": "web-reviewed"
    },
    {
      "id": "G07",
      "title": "Electricity comes to Glessner House",
      "url": "https://glessnerhouse.blogspot.com/2013/08/electricity-comes-to-glessner-house.html",
      "kind": "official museum blog citing family correspondence",
      "date": "{\"publication\": \"2013-08-12\", \"electrification\": \"1892 summer\", \"staff instructions\": \"1901\"}",
      "notes": "July 1892 correspondence documents electric conversion, repainting and a gas explosion. Original gas fixtures in main hall/parlor were converted. Parlor received Pretyman wall covering; other rooms Morris papers. Kerosene lamps remained in use in 1901. Basement wood conduit survives. 1923 photos show some changed fixtures of unknown installation date. Do not infer 1904 fixtures from all 1923 photographs. Original prewiring is presumed in article, not confirmed by building specifications.",
      "rights_status": "check_required",
      "retrieval_status": "web-reviewed"
    },
    {
      "id": "G08",
      "title": "Glessner Family",
      "url": "https://www.glessnerhouse.org/glessner-family",
      "kind": "museum family history",
      "date": "{\"silversmith bench\": \"1904\"}",
      "notes": "Frances established a basement workbench in 1904 for silverwork. Exact installation month, equipment inventory and room dimensions require journal verification.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "G09",
      "title": "Heating Glessner House — Then and Now",
      "url": "https://glessnerhouse.blogspot.com/2015/12/heating-glessner-house-then-and-now.html",
      "kind": "museum building-services history",
      "date": "{\"publication\": \"2015-12\"}",
      "notes": "Source discusses original heating and quotes the 1923 memoir. A photographed thermostat was made by a company organized in 1904. Company founding gives only a terminus post quem, not proof that this thermostat existed in the 1904 house.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "G10",
      "title": "Preservation Month Part I — Dining Room",
      "url": "https://glessnerhouse.blogspot.com/2020/05/preservation-month-part-i-dining-room.html?m=0",
      "kind": "museum room restoration account",
      "date": "{\"publication\": \"2020-05\", \"fixtures electrified\": \"1892\", \"tiles removed\": \"1938-04\"}",
      "notes": "Dining-room gas fixtures converted in 1892 with glass shades added. Iznik fireplace tiles removed by Frances Glessner Lee in 1938; later recreated. Track originals versus recreated surfaces; historic photos are required for 1904 placement.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "G11",
      "title": "Preservation Month Part II — Main Hall",
      "url": "https://glessnerhouse.blogspot.com/2020/05/preservation-month-part-ii-main-hall.html",
      "kind": "museum room restoration account",
      "date": "{\"publication\": \"2020-05\", \"earliest photograph\": \"1888\"}",
      "notes": "Includes George Glessner’s earliest known main-hall photograph and discussion of later restoration. Modern restoration is an interpretive reconstruction; date historic views separately.",
      "rights_status": "check_required",
      "retrieval_status": "web-reviewed"
    },
    {
      "id": "G12",
      "title": "Stone capitals on Glessner House",
      "url": "https://glessnerhouse.blogspot.com/2013/02/the-stone-capitals-on-glessner-house.html",
      "kind": "museum ornament history",
      "date": "{\"publication\": \"2013-02\"}",
      "notes": "Examines capital design; Isaac Scott proposals were not accepted by the Glessners. Rejected designs must not be modeled as executed ornament.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "G13",
      "title": "A Tale of Thirty-Five Tiles",
      "url": "https://glessnerhouse.blogspot.com/2018/11/a-tale-of-thirty-five-tiles.html?m=0",
      "kind": "museum conservation account",
      "date": "{\"restoration reopening\": \"2018-11-07\"}",
      "notes": "Documents master-bedroom tile restoration and return from family ownership. Use to distinguish removed/reinstalled originals from twentieth-century conditions.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "G14",
      "title": "Datestone",
      "url": "https://www.glessnerhouse.org/datestone",
      "kind": "museum architectural detail",
      "date": "{\"setting\": \"1886-11 approximately\"}",
      "notes": "North-facing east-end gable bears A.D. and 1886 datestones; journal places near-completion of exterior stonework in November 1886. 1886 date stone is not occupancy year; finished house occupied in December 1887.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "G15",
      "title": "Research Opportunities",
      "url": "https://www.glessnerhouse.org/research-opportunities",
      "kind": "custodian archive access description",
      "date": "{}",
      "notes": "Museum holds historic photographs, family papers, restoration files, drawings and published articles. Appointment-based access. Collections are not comprehensively digitized. No appointment or contact was made.",
      "rights_status": "check_required",
      "retrieval_status": "web-reviewed"
    },
    {
      "id": "G16",
      "title": "Henry Hobson Richardson drawings, circa 1886–1940",
      "url": "https://hollisarchives.lib.harvard.edu/catalog/hou00434",
      "kind": "Harvard archival finding aid",
      "date": "{}",
      "notes": "Finding aid includes Glessner project. Drawing codes distinguish plans A, elevations B, sections C, exterior details D, interior details E, site/perspective F. Digital microfilm index linked. Glessner series: hou00434c00106, 105 drawings. Ten acquired 2026-09-28 (pa-glessner-houghton-gle-*); the contents list (entries 1–100) is transcribed in the Glessner dossier. Direct open rate-limited; indexed record verified.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified; Glessner series contents read from owner-supplied printouts 2026-09-28; ten drawings acquired"
    },
    {
      "id": "G16-I",
      "title": "Richardson drawing microfilm index",
      "url": "https://iiif.lib.harvard.edu/manifests/view/drs:474641184$363i",
      "kind": "Harvard digital index",
      "date": "{}",
      "notes": "Index URL provided by Harvard finding aid. Lead only: not yet inspected; do not claim individual drawings acquired.",
      "rights_status": "check_required",
      "retrieval_status": "catalog-linked-lead"
    },
    {
      "id": "G17",
      "title": "Glessner family papers",
      "url": "https://www.aaa.si.edu/collections/surveys/chicago/chicago-history-museum/glessner-family-papers",
      "kind": "Smithsonian survey of Chicago History Museum holdings",
      "date": "{}",
      "notes": "Survey identifies family papers at Chicago History Museum and museum-held searchable typescript of Frances Glessner journals. Indexed summary gives erroneous/ambiguous 1886 move-in chronology; prefer 1887 contemporary evidence. Direct page retrieval failed.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified; direct-open-failed"
    },
    {
      "id": "G18",
      "title": "Isaac Scott papers",
      "url": "https://www.aaa.si.edu/collections/surveys/chicago/glessner-house-museum/isaac-scott-papers",
      "kind": "Smithsonian archival holdings survey",
      "date": "{}",
      "notes": "Design drawings, sketches, photographs and correspondence; three flat files, two oversize folders, portfolio and four tubes. Finding aid describes holdings, not digitized object access.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "G19",
      "title": "Scrapbook of Glessner correspondence",
      "url": "https://www.aaa.si.edu/collections/surveys/chicago/glessner-house-museum/scrapbook-glessner-correspondence",
      "kind": "Smithsonian archival holdings survey",
      "date": "{\"coverage\": \"1880–1904\"}",
      "notes": "Bound scrapbook of letters to John and Frances from artists, designers and other correspondents. Finding aid only; no letters acquired or transcribed.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "G20",
      "title": "Virtual Tour",
      "url": "https://www.glessnerhouse.org/virtual-tour",
      "kind": "museum contemporary spatial reference",
      "date": "{}",
      "notes": "Interactive present-day tour reference. Contemporary restored state; do not use as 1904 truth without phase controls.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "G21",
      "title": "Glessner House landmark entry",
      "url": "https://webapps1.chicago.gov/landmarksweb/web/landmarkdetails.htm?lanId=1315",
      "kind": "City of Chicago civic landmark record",
      "date": "{}",
      "notes": "Civic identity and designation reference for 1800 South Prairie Avenue. Designation history is different from construction chronology.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "G22",
      "title": "Glessner House National Historic Landmark nomination",
      "url": "https://npgallery.nps.gov/GetAsset/e8026882-ab58-4a8a-b093-6ed95af4fc3d",
      "kind": "NPS nomination PDF",
      "date": "{}",
      "notes": "Nomination document identified in search; building narrative and bibliography target. Lead: full PDF not yet acquired or page-audited.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-document-lead"
    },
    {
      "id": "G23",
      "title": "Prairie Avenue 1887",
      "url": "https://www.glessnerhouse.org/prairie-avenue-1887",
      "kind": "museum reproduction of Ward Bros publication",
      "date": "{\"publication\": \"1887\"}",
      "notes": "Northward street view from 20th Street/Cullerton published in Souvenir of Chicago. Street scene predates 1904; identify individual parcels before using it for geometry.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "G24",
      "title": "Prairie Avenue neighborhood history",
      "url": "https://www.glessnerhouse.org/prairie-avenue",
      "kind": "museum neighborhood history",
      "date": "{\"last new house\": \"1904\", \"institutional conversions\": \"by 1910\"}",
      "notes": "Museum gives 1904 as the last new house for nearly a century; by 1910 medical school and addiction clinic were present. Useful rationale for a 1904 baseline and 1910/1911 change horizon; individual demolition dates require parcel evidence.",
      "rights_status": "check_required",
      "retrieval_status": "indexed-record-verified"
    },
    {
      "id": "civic-bluebook-1903",
      "title": "Chicago Blue Book of Selected Names, 1903",
      "url": "https://libsysdigi.library.illinois.edu/oca/Books2007-10/chicagobluebooko/chicagobluebooko1903chic/chicagobluebooko1903chic.pdf",
      "kind": "directory",
      "date": "1903",
      "notes": "Selected householders listed alphabetically and numerically by street. Annual comparison identifies occupancy changes and address leads. A selective social directory, not a census or complete building inventory. No listing does not mean vacant or demolished. For 1904 title is year ending 1904, copyright 1903; preface says canvass begins early September for issue before holidays. Confirm season/year before asserting exact residence dates. Core Prairie entries: printed pp.186–187; PDF pages 188–189 in both 1904 and 1910.",
      "rights_status": "Underlying pre-1931 US published work public domain; UIUC terms call content public domain but specify personal/educational use, attribution and commercial permission. Preserve attribution; repository terms review required before derivatives/commercial republication.",
      "retrieval_status": "downloaded original OCR; PDF URL follows verified series links; PDF not downloaded"
    },
    {
      "id": "civic-bluebook-1904",
      "title": "Chicago Blue Book of Selected Names, 1904",
      "url": "https://libsysdigi.library.illinois.edu/oca/Books2007-10/chicagobluebooko/chicagobluebooko1904chic/chicagobluebooko1904chic.pdf",
      "kind": "directory",
      "date": "1904",
      "notes": "Selected householders listed alphabetically and numerically by street. Annual comparison identifies occupancy changes and address leads. A selective social directory, not a census or complete building inventory. No listing does not mean vacant or demolished. For 1904 title is year ending 1904, copyright 1903; preface says canvass begins early September for issue before holidays. Confirm season/year before asserting exact residence dates. Core Prairie entries: printed pp.186–187; PDF pages 188–189 in both 1904 and 1910.",
      "rights_status": "Underlying pre-1931 US published work public domain; UIUC terms call content public domain but specify personal/educational use, attribution and commercial permission. Preserve attribution; repository terms review required before derivatives/commercial republication.",
      "retrieval_status": "downloaded original OCR; PDF downloaded"
    },
    {
      "id": "civic-bluebook-1905",
      "title": "Chicago Blue Book of Selected Names, 1905",
      "url": "https://libsysdigi.library.illinois.edu/oca/Books2007-10/chicagobluebooko/chicagobluebooko1905chic/chicagobluebooko1905chic.pdf",
      "kind": "directory",
      "date": "1905",
      "notes": "Selected householders listed alphabetically and numerically by street. Annual comparison identifies occupancy changes and address leads. A selective social directory, not a census or complete building inventory. No listing does not mean vacant or demolished. For 1904 title is year ending 1904, copyright 1903; preface says canvass begins early September for issue before holidays. Confirm season/year before asserting exact residence dates. Core Prairie entries: printed pp.186–187; PDF pages 188–189 in both 1904 and 1910.",
      "rights_status": "Underlying pre-1931 US published work public domain; UIUC terms call content public domain but specify personal/educational use, attribution and commercial permission. Preserve attribution; repository terms review required before derivatives/commercial republication.",
      "retrieval_status": "downloaded original OCR; PDF URL follows verified series links; PDF not downloaded"
    },
    {
      "id": "civic-bluebook-1906",
      "title": "Chicago Blue Book of Selected Names, 1906",
      "url": "https://libsysdigi.library.illinois.edu/oca/Books2007-10/chicagobluebooko/chicagobluebooko1906chic/chicagobluebooko1906chic.pdf",
      "kind": "directory",
      "date": "1906",
      "notes": "Selected householders listed alphabetically and numerically by street. Annual comparison identifies occupancy changes and address leads. A selective social directory, not a census or complete building inventory. No listing does not mean vacant or demolished. For 1904 title is year ending 1904, copyright 1903; preface says canvass begins early September for issue before holidays. Confirm season/year before asserting exact residence dates. Core Prairie entries: printed pp.186–187; PDF pages 188–189 in both 1904 and 1910.",
      "rights_status": "Underlying pre-1931 US published work public domain; UIUC terms call content public domain but specify personal/educational use, attribution and commercial permission. Preserve attribution; repository terms review required before derivatives/commercial republication.",
      "retrieval_status": "downloaded original OCR; PDF URL follows verified series links; PDF not downloaded"
    },
    {
      "id": "civic-bluebook-1907",
      "title": "Chicago Blue Book of Selected Names, 1907",
      "url": "https://libsysdigi.library.illinois.edu/oca/Books2007-10/chicagobluebooko/chicagobluebooko1907chic/chicagobluebooko1907chic.pdf",
      "kind": "directory",
      "date": "1907",
      "notes": "Selected householders listed alphabetically and numerically by street. Annual comparison identifies occupancy changes and address leads. A selective social directory, not a census or complete building inventory. No listing does not mean vacant or demolished. For 1904 title is year ending 1904, copyright 1903; preface says canvass begins early September for issue before holidays. Confirm season/year before asserting exact residence dates. Core Prairie entries: printed pp.186–187; PDF pages 188–189 in both 1904 and 1910.",
      "rights_status": "Underlying pre-1931 US published work public domain; UIUC terms call content public domain but specify personal/educational use, attribution and commercial permission. Preserve attribution; repository terms review required before derivatives/commercial republication.",
      "retrieval_status": "downloaded original OCR; PDF URL follows verified series links; PDF not downloaded"
    },
    {
      "id": "civic-bluebook-1908",
      "title": "Chicago Blue Book of Selected Names, 1908",
      "url": "https://libsysdigi.library.illinois.edu/oca/Books2007-10/chicagobluebooko/chicagobluebooko1908chic/chicagobluebooko1908chic.pdf",
      "kind": "directory",
      "date": "1908",
      "notes": "Selected householders listed alphabetically and numerically by street. Annual comparison identifies occupancy changes and address leads. A selective social directory, not a census or complete building inventory. No listing does not mean vacant or demolished. For 1904 title is year ending 1904, copyright 1903; preface says canvass begins early September for issue before holidays. Confirm season/year before asserting exact residence dates. Core Prairie entries: printed pp.186–187; PDF pages 188–189 in both 1904 and 1910.",
      "rights_status": "Underlying pre-1931 US published work public domain; UIUC terms call content public domain but specify personal/educational use, attribution and commercial permission. Preserve attribution; repository terms review required before derivatives/commercial republication.",
      "retrieval_status": "downloaded original OCR; PDF URL follows verified series links; PDF not downloaded"
    },
    {
      "id": "civic-bluebook-1909",
      "title": "Chicago Blue Book of Selected Names, 1909",
      "url": "https://libsysdigi.library.illinois.edu/oca/Books2007-10/chicagobluebooko/chicagobluebooko1909chic/chicagobluebooko1909chic.pdf",
      "kind": "directory",
      "date": "1909",
      "notes": "Selected householders listed alphabetically and numerically by street. Annual comparison identifies occupancy changes and address leads. A selective social directory, not a census or complete building inventory. No listing does not mean vacant or demolished. For 1904 title is year ending 1904, copyright 1903; preface says canvass begins early September for issue before holidays. Confirm season/year before asserting exact residence dates. Core Prairie entries: printed pp.186–187; PDF pages 188–189 in both 1904 and 1910.",
      "rights_status": "Underlying pre-1931 US published work public domain; UIUC terms call content public domain but specify personal/educational use, attribution and commercial permission. Preserve attribution; repository terms review required before derivatives/commercial republication.",
      "retrieval_status": "downloaded original OCR; PDF URL follows verified series links; PDF not downloaded"
    },
    {
      "id": "civic-bluebook-1910",
      "title": "Chicago Blue Book of Selected Names, 1910",
      "url": "https://libsysdigi.library.illinois.edu/oca/Books2007-10/chicagobluebooko/chicagobluebooko1910chic/chicagobluebooko1910chic.pdf",
      "kind": "directory",
      "date": "1910",
      "notes": "Selected householders listed alphabetically and numerically by street. Annual comparison identifies occupancy changes and address leads. A selective social directory, not a census or complete building inventory. No listing does not mean vacant or demolished. For 1904 title is year ending 1904, copyright 1903; preface says canvass begins early September for issue before holidays. Confirm season/year before asserting exact residence dates. Core Prairie entries: printed pp.186–187; PDF pages 188–189 in both 1904 and 1910.",
      "rights_status": "Underlying pre-1931 US published work public domain; UIUC terms call content public domain but specify personal/educational use, attribution and commercial permission. Preserve attribution; repository terms review required before derivatives/commercial republication.",
      "retrieval_status": "downloaded original OCR; PDF downloaded"
    },
    {
      "id": "civic-bluebook-1911",
      "title": "Chicago Blue Book of Selected Names, 1911",
      "url": "https://libsysdigi.library.illinois.edu/oca/Books2007-10/chicagobluebooko/chicagobluebooko1911chic/chicagobluebooko1911chic.pdf",
      "kind": "directory",
      "date": "1911",
      "notes": "Selected householders listed alphabetically and numerically by street. Annual comparison identifies occupancy changes and address leads. A selective social directory, not a census or complete building inventory. No listing does not mean vacant or demolished. For 1904 title is year ending 1904, copyright 1903; preface says canvass begins early September for issue before holidays. Confirm season/year before asserting exact residence dates. Core Prairie entries: printed pp.186–187; PDF pages 188–189 in both 1904 and 1910.",
      "rights_status": "Underlying pre-1931 US published work public domain; UIUC terms call content public domain but specify personal/educational use, attribution and commercial permission. Preserve attribution; repository terms review required before derivatives/commercial republication.",
      "retrieval_status": "downloaded original OCR; PDF URL follows verified series links; PDF not downloaded"
    },
    {
      "id": "civic-sanborn-index",
      "title": "Chicago Sanborn Maps Index",
      "url": "https://www.chipublib.org/chicago-sanborn-maps-index/",
      "kind": "map",
      "date": "modern finding aid",
      "notes": "CPL identifies Near South Side coverage as Chicago series 1905–1951, volume 3, 1911; a separate version is 1911 revised through June 1950. Use original 1911, not revised 1950 sheets, as post-1904 bracket; validate every altered/demolished building against earlier evidence. The series date 1905–1951 is not the date of every sheet.",
      "rights_status": "Catalog/finding aid only; underlying object rights require item-level review.",
      "retrieval_status": "verified catalog or finding aid"
    },
    {
      "id": "civic-sanborn-1911-v3",
      "title": "Sanborn Fire Insurance Map, Chicago, volume 3",
      "url": "https://www.loc.gov/item/sanborn01790_020/",
      "kind": "map",
      "date": "1911",
      "notes": "143-image Near South Side atlas; loc resource g4104cm.g01790191103. Exact printed sheet-to-image sequence must be checked against index. Seven years later than target. Useful footprints, materials, stories, outbuildings, widths and uses only after change chronology reconciliation. Original title/index and revision marks govern.",
      "rights_status": "Published 1911 US maps public domain; retain LOC credit.",
      "retrieval_status": "catalog/search verified; web direct open returned 403; not downloaded"
    },
    {
      "id": "civic-sanborn-holdings",
      "title": "UIUC Sanborn Holdings — Chicago",
      "url": "https://www.library.illinois.edu/max/collections/sanborn-fire-insurance-maps-new/uiuc-sanborn-holdings-new/sanborn-holdings-chicago-new/",
      "kind": "map",
      "date": "modern finding aid",
      "notes": "Confirms 1911 volume 3 contains 143 sheets/images in holdings. Finding aid corroboration, not measured map evidence.",
      "rights_status": "Catalog/finding aid only; underlying object rights require item-level review.",
      "retrieval_status": "verified catalog or finding aid"
    },
    {
      "id": "civic-uic-permits",
      "title": "Chicago Building Permits Digital Collection 1872–1954",
      "url": "https://researchguides.uic.edu/CBP/home",
      "kind": "permits",
      "date": "1872–1954",
      "notes": "UIC collection: first locate historical address in street index, record permit number/date/book/page, select matching South-side ledger date span, then verify permit number and address. Pre-1912 permits span rows and sometimes two pages; fields can include owner, stories, frontage, depth, lot/block/subdivision and building type. Amount received can be permit fee, not construction cost. Handwritten collection requires page-level transcription. No Prairie-specific permit has been retrieved in this pass. Fire reports 1933–1968 and construction data 1917–1925 are later context, not 1904 evidence.",
      "rights_status": "Rights not evaluated at item level.",
      "retrieval_status": "UIC guide read via direct HTTP; digital collection returned 403. No individual permit retrieved."
    },
    {
      "id": "civic-contractor-index",
      "title": "American Contractor building permit column index, 1898–1912",
      "url": "https://chsmedia.org/househistory/1898-1912permits/search.asp",
      "kind": "permits",
      "date": "1898–1912",
      "notes": "Chicago History Museum index linked by CPL: route to permit notices, owner, architect and construction descriptions. Index only until actual article/permit inspected. Search all Prairie addresses, aliases and cross-street addresses.",
      "rights_status": "Finding aid; period newspaper/article rights at item level.",
      "retrieval_status": "CPL link verified; direct request timed out"
    },
    {
      "id": "civic-renumbering",
      "title": "Chicago 1909 street number changes guide",
      "url": "https://chsmedia.org/househistory/1909snc/start.pdf",
      "kind": "addresses",
      "date": "1909",
      "notes": "Primary crosswalk for the large citywide 1909 address change; linked by CPL house-history guide. Do not automatically renumber Prairie Avenue: verify address and parcel individually. Many core Prairie numbers appear stable between 1904 and 1910 Blue Books.",
      "rights_status": "Original 1909 publication public domain; CHM scan terms not evaluated.",
      "retrieval_status": "CPL link verified; web request timed out and direct download returned HTTP 502. Not downloaded."
    },
    {
      "id": "civic-directory-holdings",
      "title": "Chicago History Museum city directory guide",
      "url": "https://chsmedia.org/media/fa/fa/LIB/DirGuide.htm",
      "kind": "directory",
      "date": "modern finding aid",
      "notes": "Describes directory contents and coverage, including persons occupations/employers and house versus boarding notation. Full 1904 Lakeside directory not retrieved. Blue Book is not substitute for all residents/workers.",
      "rights_status": "Finding aid.",
      "retrieval_status": "search snippet verified; direct request timed out"
    },
    {
      "id": "civic-1905-code",
      "title": "Revised Municipal Code of Chicago of 1905",
      "url": "https://catalog.hathitrust.org/Record/100687762",
      "kind": "codes",
      "date": "1905",
      "notes": "Tolman code: ordinances in force March 20, 1905, supplement March–September 1905; 979 pages; full-view University of Minnesota scan. Post-target legal snapshot. Trace cited enactment and amendment dates to establish rules actually effective during 1904; do not retroject 1905 or 1910 theater/fire rules.",
      "rights_status": "Pre-1931 published US work public domain; viewer/download terms apply.",
      "retrieval_status": "catalog opened; full document not downloaded"
    },
    {
      "id": "civic-code-guide",
      "title": "Chicago Municipal Code historical research guide",
      "url": "https://www.chipublib.org/blogs/post/the-chicago-municipal-code-how-to-find-and-research-historical-codes/",
      "kind": "codes",
      "date": "modern finding aid",
      "notes": "CPL historical code chronology routes to 1881, 1890, 1905 and 1911 compilations. A law specifies requirement, not proof a particular structure complied. Chicago zoning dates from 1923; avoid modern zoning overlay in 1904 scene.",
      "rights_status": "Catalog/finding aid only; underlying object rights require item-level review.",
      "retrieval_status": "verified catalog or finding aid"
    },
    {
      "id": "civic-paving-1904",
      "title": "A report to the Street Paving Committee ... on the street paving problem of Chicago",
      "url": "https://books.google.com/books?id=s8YNAAAAYAAJ",
      "kind": "streets",
      "date": "1904",
      "notes": "John W. Alvord, R.R. Donnelley & Sons, 33 pages; engineering assessment of pavement materials, economics and traffic. Citywide context; does not establish Prairie block paving without inspecting block-specific map/table or ordinance. No asserted Prairie pavement dimensions in this pass.",
      "rights_status": "Published 1904 US work public domain; digitizer terms apply.",
      "retrieval_status": "Google Books catalog and full-view indication verified; PDF not downloaded"
    },
    {
      "id": "civic-census-1900",
      "title": "1900 Federal Population Census catalog",
      "url": "https://www.archives.gov/research/census/microfilm-catalog/1900/part-01",
      "kind": "census",
      "date": "1900",
      "notes": "NARA schedules microfilm T623, enumeration-district descriptions T1210. Find Cook County/Chicago ward and ED then inspect full sheets for households and live-in workers. Four-year pre-target observation. No household schedule has been retrieved or transcribed. Do not assign household members from surname directory alone.",
      "rights_status": "US federal records public domain; digitization-provider access terms apply.",
      "retrieval_status": "verified catalog or finding aid"
    },
    {
      "id": "civic-census-1910",
      "title": "1910 Federal Population Census catalog",
      "url": "https://www.archives.gov/research/census/publications-microfilm-catalogs-census/1910/general-info",
      "kind": "census",
      "date": "1910",
      "notes": "NARA population census guide and catalog. Companion endpoint https://www.archives.gov/research/census/online-resources documents fields and access. Six-year post-target observation. Must not copy 1910 household composition into 1904 without intermediate evidence. No individual schedule retrieved.",
      "rights_status": "US federal records public domain; provider access terms apply.",
      "retrieval_status": "verified catalog or finding aid"
    },
    {
      "id": "civic-househistory-guide",
      "title": "CPL online house-history checklist",
      "url": "https://www.chipublib.org/blogs/post/historic-house-hunters-a-fictional-search-for-the-kaehler-familys-dream-home-in-1890s-chicago/",
      "kind": "research-guide",
      "date": "2025",
      "notes": "Links permits, renumbering, maps, census ED aids, Blue Book, directories, photographs, historic newspapers. Methodological finding aid only. Specific list entities are discovery links, not retrieved Prairie documents.",
      "rights_status": "Catalog/finding aid only; underlying object rights require item-level review.",
      "retrieval_status": "verified catalog or finding aid"
    },
    {
      "id": "civic-citywide-photos",
      "title": "Chicago City-Wide Collection",
      "url": "https://www.chipublib.org/fa-chicago-city-wide-collection/",
      "kind": "photographs",
      "date": "various",
      "notes": "Finding aid includes Box 129 photos 15.74 (1901 Prairie N.B. Ream) and 15.75 (1905 Prairie Marshall Field home), from 1893 Pictorial Chicago. Finding-aid leads, not downloaded image objects. Original date/rights and exact view must be verified.",
      "rights_status": "Underlying 1893 reproductions may be PD; item scan terms and provenance review required.",
      "retrieval_status": "verified catalog or finding aid"
    },
    {
      "id": "civic-hooker",
      "title": "George Ellsworth Hooker City Planning Transportation and Housing Collection",
      "url": "https://www.lib.uchicago.edu/e/scrc/findingaids/view.php?eadid=ICU.SPCL.HOOKERCOLLECTION",
      "kind": "transit",
      "date": "1882–1932",
      "notes": "Finding aid includes 1907 through-routes map, 1902 street railway franchise material and transport planning evidence. Catalog leads; no assertion Prairie Avenue itself carried streetcar rails. Correlate contemporary map with adjacent Indiana/Wabash/Michigan routes.",
      "rights_status": "Archival collection rights vary; request/review item-level rights.",
      "retrieval_status": "verified catalog or finding aid"
    },
    {
      "id": "civic-code-1881",
      "title": "Municipal Code of Chicago",
      "url": "https://archive.org/details/municipalcodeofc00chicrich",
      "kind": "codes",
      "date": "1881",
      "notes": "Earlier Chicago municipal law compilation; original PDF downloaded. Earlier baseline only. Amendments and superseding 1890/1905 code must be traced; do not assert 1881 provision effective in 1904.",
      "rights_status": "Published 1881 US work public domain; digitization credited to Internet Archive.",
      "retrieval_status": "original PDF downloaded, not provision-level reviewed"
    },
    {
      "id": "MAP-1911-20",
      "title": "Sanborn Chicago vol. 3 (1911), sheet 20",
      "url": "https://www.loc.gov/item/sanborn01790_020/",
      "kind": "supplied primary map",
      "date": "1911",
      "notes": "User-supplied original scan, supplied with expert guidance. 16th–18th Streets. Retain printed sheet number; digital sequence not assumed. 1911 geometry and use are later than target.",
      "rights_status": "public_domain_US_1911",
      "retrieval_status": "local_original_acquired",
      "local_path": "maps/originals/sanborn-1911-sheet-20.jpg"
    },
    {
      "id": "MAP-1911-28",
      "title": "Sanborn Chicago vol. 3 (1911), sheet 28",
      "url": "https://www.loc.gov/item/sanborn01790_020/",
      "kind": "supplied primary map",
      "date": "1911",
      "notes": "User-supplied original scan, supplied with expert guidance. 18th–20th Streets. Retain printed sheet number; digital sequence not assumed. 1911 geometry and use are later than target.",
      "rights_status": "public_domain_US_1911",
      "retrieval_status": "local_original_acquired",
      "local_path": "maps/originals/sanborn-1911-sheet-28.jpg"
    },
    {
      "id": "MAP-1911-35",
      "title": "Sanborn Chicago vol. 3 (1911), sheet 35",
      "url": "https://www.loc.gov/item/sanborn01790_020/",
      "kind": "supplied primary map",
      "date": "1911",
      "notes": "User-supplied original scan, supplied with expert guidance. 20th–22nd Streets. Retain printed sheet number; digital sequence not assumed. 1911 geometry and use are later than target.",
      "rights_status": "public_domain_US_1911",
      "retrieval_status": "local_original_acquired",
      "local_path": "maps/originals/sanborn-1911-sheet-35.jpg"
    },
    {
      "id": "MAP-1911-key",
      "title": "Sanborn Chicago vol. 3 (1911), key",
      "url": "https://www.loc.gov/item/sanborn01790_020/",
      "kind": "supplied primary map",
      "date": "1911",
      "notes": "User-supplied original scan, supplied with expert guidance. symbols and materials. Retain printed sheet number; digital sequence not assumed. 1911 geometry and use are later than target.",
      "rights_status": "public_domain_US_1911",
      "retrieval_status": "local_original_acquired",
      "local_path": "maps/originals/sanborn-1911-key.jpg"
    },
    {
      "id": "MAP-1886",
      "title": "Robinson 1886 atlas detail: 16th–18th Streets",
      "url": "",
      "kind": "supplied primary map",
      "date": "1886",
      "notes": "Supplied with expert guidance for lost 1609–1611 rowhouses and 1620 house only. Plate bibliographic identification pending; do not use the whole 1886 streetscape as 1904.",
      "rights_status": "public_domain_US_1886",
      "retrieval_status": "local_original_acquired",
      "local_path": "maps/originals/robinson-1886-north-block.jpg"
    },
    {
      "id": "EXPERT-20260923",
      "title": "Expert map guidance for the 1904 model",
      "url": "",
      "kind": "user-supplied correspondence",
      "date": "2026-09-23",
      "notes": "Supplied note says 1911 sheets cover 16th–22nd, with two physical changes since 1904: 1609–1611 replaced by a commercial building; 1620 razed and lot empty. This is attributed expert guidance, not an independent parcel-by-parcel verification; does not establish unchanged occupants or interior details.",
      "rights_status": "factual_summary_only",
      "retrieval_status": "attachment_read",
      "local_path": "docs/map-guidance.md"
    },
    {
      "id": "pa-prairie-brochure-2022",
      "title": "Museum brochure",
      "url": "https://static1.squarespace.com/static/55ef0304e4b03f4c029572a4/t/61dc7d72061c083bccf47d24/1641839988287/Prairie%2BAvenue%2Bbrochure%2Bupdated%2B2022.pdf",
      "kind": "acquired document",
      "date": "see original and phase qualifiers",
      "notes": "PDF pages 1–4 Glessner House Museum copyright; archival reference, republication rights not established",
      "rights_status": "Glessner House Museum copyright; archival reference, republication rights not established",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-reid-nrhp-2003",
      "title": "Reid House nomination",
      "url": "https://nara-media.s3.amazonaws.com/electronic-records/rg-079/NPS_IL/03000783.pdf",
      "kind": "acquired document",
      "date": "see original and phase qualifiers",
      "notes": "PDF pp4–9 architectural description; pp11–25 history; p32 floor plans; pp34–49 image section Government-hosted nomination; constituent photo/drawing rights require review",
      "rights_status": "Government-hosted nomination; constituent photo/drawing rights require review",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-district-nrhp-1972",
      "title": "Prairie Avenue District National Register nomination, including Keith House",
      "url": "https://nara-media.s3.amazonaws.com/electronic-records/rg-079/NPS_IL/72000452.pdf",
      "kind": "acquired document",
      "date": "see original and phase qualifiers",
      "notes": "PDF pp2–15 building descriptions; pp18–24 significance/history; pp26–36 images/maps Government-hosted nomination; constituent photo/drawing rights require review",
      "rights_status": "Government-hosted nomination; constituent photo/drawing rights require review",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-clarke-habs-data",
      "title": "Clarke House HABS data pages",
      "url": "https://tile.loc.gov/storage-services/master/pnp/habshaer/il/il0000/il0096/data/il0096data.pdf",
      "kind": "acquired document",
      "date": "see original and phase qualifiers",
      "notes": "PDF pages 1–4 HABS: no known restrictions for US Government images; copied material may have restrictions",
      "rights_status": "HABS: no known restrictions for US Government images; copied material may have restrictions",
      "retrieval_status": "downloaded; repository original",
      "local_path": "research/public/clarke-habs-data.pdf"
    },
    {
      "id": "pa-prairie-city-report-1973",
      "title": "Prairie Avenue City 1973 report",
      "url": "https://reports.chicagolandmarkreports.org/prairie-avenue-district.pdf",
      "kind": "acquired document",
      "date": "see original and phase qualifiers",
      "notes": "PDF pages 1–24 City report hosted by Preservation Chicago; reuse rights not established",
      "rights_status": "City report hosted by Preservation Chicago; reuse rights not established",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-kimball-habs-il1077",
      "title": "Kimball House HABS IL-1077 data",
      "url": "https://tile.loc.gov/storage-services/master/pnp/habshaer/il/il0100/il0136/data/il0136data.pdf",
      "kind": "acquired document",
      "date": "see original and phase qualifiers",
      "notes": "PDF pp2–5 architectural details; p6 survey date August 24, 1967 HABS federal text; copied sources may be restricted",
      "rights_status": "HABS federal text; copied sources may be restricted",
      "retrieval_status": "downloaded; repository original",
      "local_path": "research/public/kimball-habs-data.pdf"
    },
    {
      "id": "pa-wheeler-kohn-nrhp-1999",
      "title": "Wheeler-Kohn National Register nomination",
      "url": "https://nara-media.s3.amazonaws.com/electronic-records/rg-079/NPS_IL/99000975.pdf",
      "kind": "acquired document",
      "date": "see original and phase qualifiers",
      "notes": "PDF pp4–10 architectural description; p22 plan; pp24–60 photographs/caption versos Government hosted record; constituent imagery rights require review",
      "rights_status": "Government hosted record; constituent imagery rights require review",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-keith-dining-room",
      "title": "Elbridge Keith dining room historic photograph",
      "url": "https://images.squarespace-cdn.com/content/v1/55ef0304e4b03f4c029572a4/1613516027822-O9SZ5NMLWH163BURUQWL/3%2B-%2BKeith%2BHouse%2Bdining%2Broom.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": " Rights not established; original archival download only, no derivative or permission assumption",
      "rights_status": "Rights not established; original archival download only, no derivative or permission assumption",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1729prairiedailynews",
      "title": "1729 Prairie: exterior; date unverified",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/goldenage2/1729prairiedailynews.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1729prairiedrawingroom",
      "title": "1729 Prairie: drawing room; date unverified",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/goldenage2/1729prairiedrawingroom.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1729prairieaddition",
      "title": "1729 Prairie: addition; image date unverified",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/goldenage2/1729prairieaddition.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1729prairie1901",
      "title": "1729 Prairie: exterior caption dated 1901",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/goldenage2/1729prairie1901.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1729prairie1902",
      "title": "1729 Prairie: exterior caption dated 1902",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/goldenage2/1729prairie1902.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1729prairie1886map",
      "title": "1729 Prairie: map caption dated 1886; not 1904",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/chicagoimages9/1729prairie1886map.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-923prairiefieldhome",
      "title": "1905 Prairie: Field residence exterior; date unverified",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/chicagoimages9/923prairiefieldhome.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1905prairielibrary",
      "title": "1905 Prairie: library; date unverified",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/chicagoimages8/1905prairielibrary.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1905prairehallway",
      "title": "1905 Prairie: hall; date unverified",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/chicagoimages8/1905prairehallway.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1905prairieC",
      "title": "1905 Prairie: historic image; caption review required",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/chicagoimages8/1905prairieC.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1905prairieA",
      "title": "1905 Prairie: historic image; caption review required",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/chicagoimages8/1905prairieA.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1893marshallfieldhouse",
      "title": "1905 Prairie: exterior filename dates 1893; verify original",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/chicagoimages9/1893marshallfieldhouse.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-chicagology-1905prairie1886map",
      "title": "1905 Prairie: map filename dates 1886; not 1904",
      "url": "https://chicagology.com/wp-content/themes/revolution-20/chicagoimages9/1905prairie1886map.jpg",
      "kind": "acquired photograph",
      "date": "see original and phase qualifiers",
      "notes": "image asset on cited house page Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "rights_status": "Historic reproduction from secondary collection; original source/publication rights not established. Private archival research copy only; no derivative or reuse permission implied.",
      "retrieval_status": "downloaded; companion archive"
    },
    {
      "id": "pa-glessner-habs-data",
      "title": "John J. Glessner House HABS IL-1015 historical data",
      "url": "https://tile.loc.gov/storage-services/master/pnp/habshaer/il/il0100/il0118/data/il0118data.pdf",
      "kind": "acquired document",
      "date": "see original and phase qualifiers",
      "notes": "PDF p2 deed; p3 construction and1946 alterations; pp22–24 architectural data; pp26–27 photogrammetric inventory HABS report includes historical copied text; pp26–27 specify original glass photogrammetric plates need special permission. Distinguish federal architectural text/measured drawings and reference prints from restricted plates.",
      "rights_status": "HABS report includes historical copied text; pp26–27 specify original glass photogrammetric plates need special permission. Distinguish federal architectural text/measured drawings and reference prints from restricted plates.",
      "retrieval_status": "downloaded; repository original",
      "local_path": "research/public/glessner-habs-data.pdf"
    },
    {
      "id": "pa-glessner-habs-sheet-1",
      "title": "Glessner HABS: Title and neighborhood site plan",
      "url": "https://cdn.loc.gov/master/pnp/habshaer/il/il0100/il0118/sheet/00001a.tif",
      "kind": "acquired architectural drawing",
      "date": "see original and phase qualifiers",
      "notes": "sheet 1 of 6 HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "rights_status": "HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "retrieval_status": "downloaded; repository original",
      "local_path": "research/public/glessner-habs-sheet-1.tif",
      "preview_path": "research/public/glessner-habs-sheet-1.png"
    },
    {
      "id": "pa-glessner-habs-sheet-2",
      "title": "Glessner HABS: First-floor plan",
      "url": "https://cdn.loc.gov/master/pnp/habshaer/il/il0100/il0118/sheet/00002a.tif",
      "kind": "acquired architectural drawing",
      "date": "see original and phase qualifiers",
      "notes": "sheet 2 of 6 HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "rights_status": "HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "retrieval_status": "downloaded; repository original",
      "local_path": "research/public/glessner-habs-sheet-2.tif",
      "preview_path": "research/public/glessner-habs-sheet-2.png"
    },
    {
      "id": "pa-glessner-habs-sheet-3",
      "title": "Glessner HABS: Second-floor plan",
      "url": "https://cdn.loc.gov/master/pnp/habshaer/il/il0100/il0118/sheet/00003a.tif",
      "kind": "acquired architectural drawing",
      "date": "see original and phase qualifiers",
      "notes": "sheet 3 of 6 HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "rights_status": "HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "retrieval_status": "downloaded; repository original",
      "local_path": "research/public/glessner-habs-sheet-3.tif",
      "preview_path": "research/public/glessner-habs-sheet-3.png"
    },
    {
      "id": "pa-glessner-habs-sheet-4",
      "title": "Glessner HABS: Section A–A",
      "url": "https://cdn.loc.gov/master/pnp/habshaer/il/il0100/il0118/sheet/00004a.tif",
      "kind": "acquired architectural drawing",
      "date": "see original and phase qualifiers",
      "notes": "sheet 4 of 6 HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "rights_status": "HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "retrieval_status": "downloaded; repository original",
      "local_path": "research/public/glessner-habs-sheet-4.tif",
      "preview_path": "research/public/glessner-habs-sheet-4.png"
    },
    {
      "id": "pa-glessner-habs-sheet-5",
      "title": "Glessner HABS: Masonry and doorway details",
      "url": "https://cdn.loc.gov/master/pnp/habshaer/il/il0100/il0118/sheet/00005a.tif",
      "kind": "acquired architectural drawing",
      "date": "see original and phase qualifiers",
      "notes": "sheet 5 of 6 HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "rights_status": "HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "retrieval_status": "downloaded; repository original",
      "local_path": "research/public/glessner-habs-sheet-5.tif",
      "preview_path": "research/public/glessner-habs-sheet-5.png"
    },
    {
      "id": "pa-glessner-habs-sheet-6",
      "title": "Glessner HABS: Front/east elevation, photogrammetry April6 1965",
      "url": "https://cdn.loc.gov/master/pnp/habshaer/il/il0100/il0118/sheet/00006a.tif",
      "kind": "acquired architectural drawing",
      "date": "see original and phase qualifiers",
      "notes": "sheet 6 of 6 HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "rights_status": "HABS measured drawing, United States federal government work; Commons marks PD-US-NPS.",
      "retrieval_status": "downloaded; repository original",
      "local_path": "research/public/glessner-habs-sheet-6.tif",
      "preview_path": "research/public/glessner-habs-sheet-6.png"
    },
    {
      "id": "pa-glessner-habs-photo-01",
      "title": "Glessner HABS photo 1: Exterior from northwest",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060903p",
      "kind": "acquired HABS photograph",
      "date": "1963-07-23",
      "notes": "HABS IL-1015 photograph 1 of 17. LOC caption: “1. Historic American Buildings Survey Cervin Robinson, Photographer July 23, 1963 EXTERIOR FROM NORTHWEST - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. Cervin Robinson, photographer, for HABS, July 23, 1963. Call number HABS ILL,16-CHIG,17--1. Master TIFF 060903pu.tif (4867×3486 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: Shows the house in 1963, after the Glessner family years. Use for surviving exterior fabric, not as the 1904 state.",
      "rights_status": "Made for HABS (U.S. Government). LOC: no known restrictions on images made by the U.S. Government.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-01.jpg",
      "preview_path": "research/public/glessner-habs-photo-01-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060903pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-02",
      "title": "Glessner HABS photo 2: Front elevation",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060904p",
      "kind": "acquired HABS photocopy of a historic photograph",
      "date": "c. 1923 (copied for HABS)",
      "notes": "HABS IL-1015 photograph 2 of 17. LOC caption: “2. Historic American Buildings Survey Photocopy c. 1923 from J. J. Glessner, The Story of a House FRONT ELEVATION - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Call number HABS ILL,16-CHIG,17--2. Master TIFF 060904pu.tif (5000×3986 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904.",
      "rights_status": "HABS copy of a photograph from J. J. Glessner, The Story of a House (1923). LOC: images copied from other sources may be restricted; review the underlying 1923 work before republication.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-02.jpg",
      "preview_path": "research/public/glessner-habs-photo-02-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060904pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-03",
      "title": "Glessner HABS photo 3: 18th Street arch",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060905p",
      "kind": "acquired HABS photocopy of a historic photograph",
      "date": "c. 1923 (copied for HABS)",
      "notes": "HABS IL-1015 photograph 3 of 17. LOC caption: “3. Historic American Buildings Survey Photocopy c. 1923 from J. J. Glessner, The Story of a House 18th STREET ARCH - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Call number HABS ILL,16-CHIG,17--3. Master TIFF 060905pu.tif (5000×4007 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904.",
      "rights_status": "HABS copy of a photograph from J. J. Glessner, The Story of a House (1923). LOC: images copied from other sources may be restricted; review the underlying 1923 work before republication.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-03.jpg",
      "preview_path": "research/public/glessner-habs-photo-03-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060905pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-04",
      "title": "Glessner HABS photo 4: Detail: gable and chimney 18th Street side",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060906p",
      "kind": "acquired HABS photocopy of a historic photograph",
      "date": "c. 1923 (copied for HABS)",
      "notes": "HABS IL-1015 photograph 4 of 17. LOC caption: “4. Historic American Buildings Survey Photocopy c. 1923 from J. J. Glessner The Story of a House DETAIL: GABLE AND CHIMNEY 18th STREET SIDE - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Call number HABS ILL,16-CHIG,17--4. Master TIFF 060906pu.tif (3937×5000 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904.",
      "rights_status": "HABS copy of a photograph from J. J. Glessner, The Story of a House (1923). LOC: images copied from other sources may be restricted; review the underlying 1923 work before republication.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-04.jpg",
      "preview_path": "research/public/glessner-habs-photo-04-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060906pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-05",
      "title": "Glessner HABS photo 5: Interior court",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060907p",
      "kind": "acquired HABS photocopy of a historic photograph",
      "date": "c. 1923 (copied for HABS)",
      "notes": "HABS IL-1015 photograph 5 of 17. LOC caption: “5. Historic American Buildings Survey Photocopy c. 1923 from J. J. Glessner, The Story of a House INTERIOR COURT - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Call number HABS ILL,16-CHIG,17--5. Master TIFF 060907pu.tif (5000×3999 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904.",
      "rights_status": "HABS copy of a photograph from J. J. Glessner, The Story of a House (1923). LOC: images copied from other sources may be restricted; review the underlying 1923 work before republication.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-05.jpg",
      "preview_path": "research/public/glessner-habs-photo-05-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060907pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-06",
      "title": "Glessner HABS photo 6: First floor staircase: main hall north end",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060908p",
      "kind": "acquired HABS photocopy of a historic photograph",
      "date": "c. 1923 (copied for HABS)",
      "notes": "HABS IL-1015 photograph 6 of 17. LOC caption: “6. Historic American Buildings Survey Photocopy c. 1923 from J. J. Glessner The Story of a House FIRST FLOOR STAIRCASE: MAIN HALL NORTH END - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Call number HABS ILL,16-CHIG,17--6. Master TIFF 060908pu.tif (3970×5000 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904.",
      "rights_status": "HABS copy of a photograph from J. J. Glessner, The Story of a House (1923). LOC: images copied from other sources may be restricted; review the underlying 1923 work before republication.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-06.jpg",
      "preview_path": "research/public/glessner-habs-photo-06-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060908pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-07",
      "title": "Glessner HABS photo 7: First floor stairhall: south",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060909p",
      "kind": "acquired HABS photocopy of a historic photograph",
      "date": "c. 1923 (copied for HABS)",
      "notes": "HABS IL-1015 photograph 7 of 17. LOC caption: “7. Historic American Buildings Survey Photocopy c. 1923 from J. J. Glessner The Story of a House FIRST FLOOR STAIRHALL: SOUTH - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Call number HABS ILL,16-CHIG,17--7. Master TIFF 060909pu.tif (3956×5000 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904.",
      "rights_status": "HABS copy of a photograph from J. J. Glessner, The Story of a House (1923). LOC: images copied from other sources may be restricted; review the underlying 1923 work before republication.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-07.jpg",
      "preview_path": "research/public/glessner-habs-photo-07-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060909pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-08",
      "title": "Glessner HABS photo 8: Library: west and north sides",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060910p",
      "kind": "acquired HABS photocopy of a historic photograph",
      "date": "c. 1923 (copied for HABS)",
      "notes": "HABS IL-1015 photograph 8 of 17. LOC caption: “8. Historic American Buildings Survey Photocopy c. 1923 from J. J. Glessner The Story of a House LIBRARY: WEST AND NORTH SIDES - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Call number HABS ILL,16-CHIG,17--8. Master TIFF 060910pu.tif (5000×3978 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904.",
      "rights_status": "HABS copy of a photograph from J. J. Glessner, The Story of a House (1923). LOC: images copied from other sources may be restricted; review the underlying 1923 work before republication.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-08.jpg",
      "preview_path": "research/public/glessner-habs-photo-08-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060910pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-09",
      "title": "Glessner HABS photo 9: School room",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060911p",
      "kind": "acquired HABS photocopy of a historic photograph",
      "date": "c. 1923 (copied for HABS)",
      "notes": "HABS IL-1015 photograph 9 of 17. LOC caption: “9. Historic American Buildings Survey Photocopy c. 1923 from J. J. Glessner The Story of a House SCHOOL ROOM - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Call number HABS ILL,16-CHIG,17--9. Master TIFF 060911pu.tif (5000×3987 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904.",
      "rights_status": "HABS copy of a photograph from J. J. Glessner, The Story of a House (1923). LOC: images copied from other sources may be restricted; review the underlying 1923 work before republication.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-09.jpg",
      "preview_path": "research/public/glessner-habs-photo-09-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060911pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-10",
      "title": "Glessner HABS photo 10: Dining room: west and north sides",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060912p",
      "kind": "acquired HABS photocopy of a historic photograph",
      "date": "c. 1923 (copied for HABS)",
      "notes": "HABS IL-1015 photograph 10 of 17. LOC caption: “10. Historic American Buildings Survey Photocopy c. 1923 from J. J. Glessner The Story of a House DINING ROOM: WEST AND NORTH SIDES - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Call number HABS ILL,16-CHIG,17--10. Master TIFF 060912pu.tif (5000×3828 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904.",
      "rights_status": "HABS copy of a photograph from J. J. Glessner, The Story of a House (1923). LOC: images copied from other sources may be restricted; review the underlying 1923 work before republication.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-10.jpg",
      "preview_path": "research/public/glessner-habs-photo-10-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060912pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-11",
      "title": "Glessner HABS photo 11: Upper hall — north and west sides",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060913p",
      "kind": "acquired HABS photocopy of a historic photograph",
      "date": "c. 1923 (copied for HABS)",
      "notes": "HABS IL-1015 photograph 11 of 17. LOC caption: “11. Historic American Buildings Survey Photocopy c. 1923 from J. J. Glessner The Story of a House UPPER HALL - NORTH AND WEST SIDES - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Call number HABS ILL,16-CHIG,17--11. Master TIFF 060913pu.tif (5000×3893 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904.",
      "rights_status": "HABS copy of a photograph from J. J. Glessner, The Story of a House (1923). LOC: images copied from other sources may be restricted; review the underlying 1923 work before republication.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-11.jpg",
      "preview_path": "research/public/glessner-habs-photo-11-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060913pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-12",
      "title": "Glessner HABS photo 12: Photocopy of preliminary design",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060914p",
      "kind": "acquired HABS photocopy of an architectural drawing",
      "date": "undated preliminary design (copied for HABS)",
      "notes": "HABS IL-1015 photograph 12 of 17. LOC caption: “12. Historic American Buildings Survey PHOTOCOPY OF PRELIMINARY DESIGN Courtesy Houghton Library, Harvard University - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. HABS photocopy of H. H. Richardson’s preliminary design, courtesy Houghton Library, Harvard University. Call number HABS ILL,16-CHIG,17--12. Master TIFF 060914pu.tif (5000×3967 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: A preliminary design is not the as-built form. Same drawing as Houghton GLE B2 (pa-glessner-houghton-gle-b2), compared visually 2026-09-28.",
      "rights_status": "Third-party original (Houghton Library, Harvard University). LOC: images copied from other sources may be restricted; review before republication.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-12.jpg",
      "preview_path": "research/public/glessner-habs-photo-12-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060914pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-13",
      "title": "Glessner HABS photo 13: North elevation — level: left stereopair",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060915p",
      "kind": "acquired HABS copy of a photogrammetric plate",
      "date": "1965",
      "notes": "HABS IL-1015 photograph 13 of 17. LOC caption: “13. NORTH ELEVATION--LEVEL: LEFT STEREOPAIR. Copy photograph of photogrammetric plate LC-HABS-GS05-T-3224-201L, - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. Photographs by Perry E. Borchers, Ohio State University, 1965 (HABS index to photographs, page 1). Call number HABS ILL,16-CHIG,17--13. Master TIFF 060915pu.tif (4933×3476 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: A 1965 photogrammetric stereo plate (the source of the sheet-6 elevation). Street and neighbours are 1965, not 1904.",
      "rights_status": "Made for HABS (U.S. Government). LOC: no known restrictions on images made by the U.S. Government.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-13.jpg",
      "preview_path": "research/public/glessner-habs-photo-13-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060915pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-14",
      "title": "Glessner HABS photo 14: North elevation — inclined: left stereopair",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060916p",
      "kind": "acquired HABS copy of a photogrammetric plate",
      "date": "1965",
      "notes": "HABS IL-1015 photograph 14 of 17. LOC caption: “14. NORTH ELEVATION--INCLINED: LEFT STEREOPAIR. Copy photograph of photogrammetric plate LC-HABS-GS05-T-3224-202L. - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. Photographs by Perry E. Borchers, Ohio State University, 1965 (HABS index to photographs, page 1). Call number HABS ILL,16-CHIG,17--14. Master TIFF 060916pu.tif (4953×3491 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: A 1965 photogrammetric stereo plate (the source of the sheet-6 elevation). Street and neighbours are 1965, not 1904.",
      "rights_status": "Made for HABS (U.S. Government). LOC: no known restrictions on images made by the U.S. Government.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-14.jpg",
      "preview_path": "research/public/glessner-habs-photo-14-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060916pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-15",
      "title": "Glessner HABS photo 15: North elevation: right stereopair",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060917p",
      "kind": "acquired HABS copy of a photogrammetric plate",
      "date": "1965",
      "notes": "HABS IL-1015 photograph 15 of 17. LOC caption: “15. NORTH ELEVATION: RIGHT STEREOPAIR. Copy photograph of photogrammetric plate LC-HABS-GS05-T-3224-203L. - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. Photographs by Perry E. Borchers, Ohio State University, 1965 (HABS index to photographs, page 1). Call number HABS ILL,16-CHIG,17--15. Master TIFF 060917pu.tif (4983×3531 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: A 1965 photogrammetric stereo plate (the source of the sheet-6 elevation). Street and neighbours are 1965, not 1904.",
      "rights_status": "Made for HABS (U.S. Government). LOC: no known restrictions on images made by the U.S. Government.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-15.jpg",
      "preview_path": "research/public/glessner-habs-photo-15-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060917pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-16",
      "title": "Glessner HABS photo 16: East elevation — level",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060918p",
      "kind": "acquired HABS copy of a photogrammetric plate",
      "date": "1965",
      "notes": "HABS IL-1015 photograph 16 of 17. LOC caption: “16. EAST ELEVATION--LEVEL. Copy photograph of photogrammetric plate LC-HABS-GS05-T-3224-204L. - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. Photographs by Perry E. Borchers, Ohio State University, 1965 (HABS index to photographs, page 1). Call number HABS ILL,16-CHIG,17--16. Master TIFF 060918pu.tif (4901×3531 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: A 1965 photogrammetric stereo plate (the source of the sheet-6 elevation). Street and neighbours are 1965, not 1904.",
      "rights_status": "Made for HABS (U.S. Government). LOC: no known restrictions on images made by the U.S. Government.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-16.jpg",
      "preview_path": "research/public/glessner-habs-photo-16-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060918pu.tif"
    },
    {
      "id": "pa-glessner-habs-photo-17",
      "title": "Glessner HABS photo 17: Northeast — angled view",
      "url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060919p",
      "kind": "acquired HABS copy of a photogrammetric plate",
      "date": "1965",
      "notes": "HABS IL-1015 photograph 17 of 17. LOC caption: “17. NE--ANGLED VIEW. Copy photograph of photogrammetric plate LC-HABS-GS05-T-3224-205L. - John J. Glessner House, 1800 South Prairie Avenue, Chicago, Cook County, IL”. Photographs by Perry E. Borchers, Ohio State University, 1965 (HABS index to photographs, page 1). Call number HABS ILL,16-CHIG,17--17. Master TIFF 060919pu.tif (4935×3507 px, 8-bit grayscale) held in Internet Archive item master-pnp-habshaer-il-il0100-il0118-photos; the web copy here is 1800 px. Evidence limit: A 1965 photogrammetric stereo plate (the source of the sheet-6 elevation). Street and neighbours are 1965, not 1904.",
      "rights_status": "Made for HABS (U.S. Government). LOC: no known restrictions on images made by the U.S. Government.",
      "retrieval_status": "downloaded 2026-09-28; LOC master TIFF via Internet Archive (SHA-1 verified); web copy in repository",
      "local_path": "research/public/glessner-habs-photo-17.jpg",
      "preview_path": "research/public/glessner-habs-photo-17-thumb.jpg",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060919pu.tif"
    },
    {
      "id": "pa-glessner-habs-captions",
      "title": "Glessner HABS: index to photographs (caption page)",
      "url": "https://tile.loc.gov/storage-services/master/pnp/habshaer/il/il0100/il0118/data/il0118cap.pdf",
      "kind": "acquired federal survey caption list",
      "date": "addendum, after 1965",
      "notes": "One-page HABS index to photographs, addendum to HABS No. IL-1015. It captions photographs IL-1015-13 to -17 (copies of 1965 photogrammetric plates LC-HABS-GS05-T-3224-201L to -205L, photographs by Perry E. Borchers, Ohio State University, 1965) and states that 1 to 12 were transmitted earlier. Captions 1 to 12 are taken from each photograph’s LOC catalog record.",
      "rights_status": "HABS survey document, United States federal government work.",
      "retrieval_status": "downloaded 2026-09-28 (earlier 403 kept in the dossier); also supplied by the owner, byte-identical",
      "local_path": "research/public/glessner-habs-photo-captions.pdf"
    },
    {
      "id": "pa-glessner-houghton-gle-f1",
      "title": "Richardson drawing GLE F1: Perspective sketch",
      "url": "https://hollisarchives.lib.harvard.edu/catalog/hou00434_hou00434c00106",
      "kind": "acquired architectural drawing (Houghton Library)",
      "date": "1885–1887 (project dates; sheet undated)",
      "notes": "Houghton drawing GLE F1: “Perspective, design drawing. Graphite on tracing paper / Perspective, preliminary drawing. Graphite on tracing paper” (one of catalog entries 2–4; Box 2, Folder 6). Henry Hobson Richardson drawings, circa 1886–1940, Houghton Library, Harvard College Library; “Chicago, Ill. J. J. Glessner house (GLE), 1885–1887. Client: John Jacob Brothers (1843–1936). Contractor: Norcross Brothers, 1885–1887” (105 drawings; Ochsner 134, O’Gorman 9; microfilm reel 8, project 2). Identified by number F (site/perspective) and graphite on tracing paper; entries 2 and 4 are the folder’s two perspectives on tracing paper, both Box 2, Folder 6. Harvard DRS 499504169; the image here is the full-size file from Harvard (5000×2274 px). Evidence limit: A design-stage perspective, not the as-built house.",
      "rights_status": "Houghton Library: images linked to the finding aid are for teaching or individual research; other use, including mounting on other systems or redistribution, requires the curator’s permission. Hosted here at the owner’s direction (2026-09-28). The drawings date from 1885–1887. Credit: Houghton Library, Harvard University.",
      "retrieval_status": "supplied by the owner 2026-09-28 from Harvard DRS (download URL recorded with each file); full-size copy in repository",
      "local_path": "research/public/glessner-houghton-gle-f1.jpg",
      "preview_path": "research/public/glessner-houghton-gle-f1-thumb.jpg",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504169/full/full/0/default.jpg"
    },
    {
      "id": "pa-glessner-houghton-gle-d15",
      "title": "Richardson drawing GLE D15: Court interior sketch (Glessner?)",
      "url": "https://hollisarchives.lib.harvard.edu/catalog/hou00434_hou00434c00106",
      "kind": "acquired architectural drawing (Houghton Library)",
      "date": "1885–1887 (project dates; sheet undated)",
      "notes": "Houghton drawing GLE D15: “Court interior (Glessner?), preliminary drawing. Graphite, ink on writing paper” (catalog entry 3; Box 2, Folder 6). Henry Hobson Richardson drawings, circa 1886–1940, Houghton Library, Harvard College Library; “Chicago, Ill. J. J. Glessner house (GLE), 1885–1887. Client: John Jacob Brothers (1843–1936). Contractor: Norcross Brothers, 1885–1887” (105 drawings; Ochsner 134, O’Gorman 9; microfilm reel 8, project 2). Identified by the only drawing on writing paper: Richardson’s “Brookline.” letterhead, pencilled “Glessner”. Harvard DRS 499504173; the image here is the full-size file from Harvard (5000×3701 px). Evidence limit: A preliminary sketch; the catalog itself queries the attribution.",
      "rights_status": "Houghton Library: images linked to the finding aid are for teaching or individual research; other use, including mounting on other systems or redistribution, requires the curator’s permission. Hosted here at the owner’s direction (2026-09-28). The drawings date from 1885–1887. Credit: Houghton Library, Harvard University.",
      "retrieval_status": "supplied by the owner 2026-09-28 from Harvard DRS (download URL recorded with each file); full-size copy in repository",
      "local_path": "research/public/glessner-houghton-gle-d15.jpg",
      "preview_path": "research/public/glessner-houghton-gle-d15-thumb.jpg",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504173/full/full/0/default.jpg"
    },
    {
      "id": "pa-glessner-houghton-gle-b2",
      "title": "Richardson drawing GLE B2: Facade (watercolor)",
      "url": "https://hollisarchives.lib.harvard.edu/catalog/hou00434_hou00434c00106",
      "kind": "acquired architectural drawing (Houghton Library)",
      "date": "1885–1887 (project dates; sheet undated)",
      "notes": "Houghton drawing GLE B2: “Facade, design drawing. Graphite, watercolor, Chinese white on Manila paper” (catalog entry 5; Drawer 16, Folder 8). Henry Hobson Richardson drawings, circa 1886–1940, Houghton Library, Harvard College Library; “Chicago, Ill. J. J. Glessner house (GLE), 1885–1887. Client: John Jacob Brothers (1843–1936). Contractor: Norcross Brothers, 1885–1887” (105 drawings; Ochsner 134, O’Gorman 9; microfilm reel 8, project 2). Identified by watercolor with Chinese white on Manila paper, inscribed “House for J. J. Glessner”. Harvard DRS 499504177; the image here is the full-size file from Harvard (5000×3811 px). Evidence limit: A design drawing. It is the drawing HABS photo 12 copies (“preliminary design, courtesy Houghton Library”).",
      "rights_status": "Houghton Library: images linked to the finding aid are for teaching or individual research; other use, including mounting on other systems or redistribution, requires the curator’s permission. Hosted here at the owner’s direction (2026-09-28). The drawings date from 1885–1887. Credit: Houghton Library, Harvard University.",
      "retrieval_status": "supplied by the owner 2026-09-28 from Harvard DRS (download URL recorded with each file); full-size copy in repository",
      "local_path": "research/public/glessner-houghton-gle-b2.jpg",
      "preview_path": "research/public/glessner-houghton-gle-b2-thumb.jpg",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504177/full/full/0/default.jpg"
    },
    {
      "id": "pa-glessner-houghton-gle-b1",
      "title": "Richardson drawing GLE B1: Facade elevation (variant)",
      "url": "https://hollisarchives.lib.harvard.edu/catalog/hou00434_hou00434c00106",
      "kind": "acquired architectural drawing (Houghton Library)",
      "date": "1885–1887 (project dates; sheet undated)",
      "notes": "Houghton drawing GLE B1: “Facade elevation (variant), design drawing. Graphite, watercolor on Manila paper” (catalog entry 6; Drawer 16, Folder 8). Henry Hobson Richardson drawings, circa 1886–1940, Houghton Library, Harvard College Library; “Chicago, Ill. J. J. Glessner house (GLE), 1885–1887. Client: John Jacob Brothers (1843–1936). Contractor: Norcross Brothers, 1885–1887” (105 drawings; Ochsner 134, O’Gorman 9; microfilm reel 8, project 2). Identified by watercolor on Manila paper; the facade elevation in plain window openings, a variant of GLE B2. Harvard DRS 499504181; the image here is the full-size file from Harvard (5000×4172 px). Evidence limit: A design variant, not the built facade.",
      "rights_status": "Houghton Library: images linked to the finding aid are for teaching or individual research; other use, including mounting on other systems or redistribution, requires the curator’s permission. Hosted here at the owner’s direction (2026-09-28). The drawings date from 1885–1887. Credit: Houghton Library, Harvard University.",
      "retrieval_status": "supplied by the owner 2026-09-28 from Harvard DRS (download URL recorded with each file); full-size copy in repository",
      "local_path": "research/public/glessner-houghton-gle-b1.jpg",
      "preview_path": "research/public/glessner-houghton-gle-b1-thumb.jpg",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504181/full/full/0/default.jpg"
    },
    {
      "id": "pa-glessner-houghton-gle-b6",
      "title": "Richardson drawing GLE B6: Sketch elevation of facade",
      "url": "https://hollisarchives.lib.harvard.edu/catalog/hou00434_hou00434c00106",
      "kind": "acquired architectural drawing (Houghton Library)",
      "date": "1885–1887 (project dates; sheet undated)",
      "notes": "Houghton drawing GLE B6: “Sketch elevation of facade, design drawing. Graphite, ink on tracing paper” (catalog entry 7; Box 2, Folder 7). Henry Hobson Richardson drawings, circa 1886–1940, Houghton Library, Harvard College Library; “Chicago, Ill. J. J. Glessner house (GLE), 1885–1887. Client: John Jacob Brothers (1843–1936). Contractor: Norcross Brothers, 1885–1887” (105 drawings; Ochsner 134, O’Gorman 9; microfilm reel 8, project 2). Identified by facade elevation in graphite and ink on tracing paper; pencilled “157”. Harvard DRS 499504185; the image here is the full-size file from Harvard (5000×2813 px). Evidence limit: A design sketch.",
      "rights_status": "Houghton Library: images linked to the finding aid are for teaching or individual research; other use, including mounting on other systems or redistribution, requires the curator’s permission. Hosted here at the owner’s direction (2026-09-28). The drawings date from 1885–1887. Credit: Houghton Library, Harvard University.",
      "retrieval_status": "supplied by the owner 2026-09-28 from Harvard DRS (download URL recorded with each file); full-size copy in repository",
      "local_path": "research/public/glessner-houghton-gle-b6.jpg",
      "preview_path": "research/public/glessner-houghton-gle-b6-thumb.jpg",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504185/full/full/0/default.jpg"
    },
    {
      "id": "pa-glessner-houghton-gle-b7",
      "title": "Richardson drawing GLE B7: Sketch elevation of side",
      "url": "https://hollisarchives.lib.harvard.edu/catalog/hou00434_hou00434c00106",
      "kind": "acquired architectural drawing (Houghton Library)",
      "date": "1885–1887 (project dates; sheet undated)",
      "notes": "Houghton drawing GLE B7: “Sketch elevation of side, design drawing. Graphite on tracing paper / Sketch of side elevation, design drawing. Graphite on tracing paper” (one of catalog entries 8–12; Box 2, Folder 7, Box 2, Folder 8). Henry Hobson Richardson drawings, circa 1886–1940, Houghton Library, Harvard College Library; “Chicago, Ill. J. J. Glessner house (GLE), 1885–1887. Client: John Jacob Brothers (1843–1936). Contractor: Norcross Brothers, 1885–1887” (105 drawings; Ochsner 134, O’Gorman 9; microfilm reel 8, project 2). Identified by a long side elevation in graphite on tracing paper; entries 8–12 are the folder’s five side-elevation sketches (Box 2, Folders 7–8). Harvard DRS 499504189; the image here is the full-size file from Harvard (5000×2555 px). Evidence limit: A design sketch of the long side.",
      "rights_status": "Houghton Library: images linked to the finding aid are for teaching or individual research; other use, including mounting on other systems or redistribution, requires the curator’s permission. Hosted here at the owner’s direction (2026-09-28). The drawings date from 1885–1887. Credit: Houghton Library, Harvard University.",
      "retrieval_status": "supplied by the owner 2026-09-28 from Harvard DRS (download URL recorded with each file); full-size copy in repository",
      "local_path": "research/public/glessner-houghton-gle-b7.jpg",
      "preview_path": "research/public/glessner-houghton-gle-b7-thumb.jpg",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504189/full/full/0/default.jpg"
    },
    {
      "id": "pa-glessner-houghton-gle-b9",
      "title": "Richardson drawing GLE B9: Sketch elevation of side",
      "url": "https://hollisarchives.lib.harvard.edu/catalog/hou00434_hou00434c00106",
      "kind": "acquired architectural drawing (Houghton Library)",
      "date": "1885–1887 (project dates; sheet undated)",
      "notes": "Houghton drawing GLE B9: “Sketch elevation of side, design drawing. Graphite on tracing paper / Sketch of side elevation, design drawing. Graphite on tracing paper” (one of catalog entries 8–12; Box 2, Folder 7, Box 2, Folder 8). Henry Hobson Richardson drawings, circa 1886–1940, Houghton Library, Harvard College Library; “Chicago, Ill. J. J. Glessner house (GLE), 1885–1887. Client: John Jacob Brothers (1843–1936). Contractor: Norcross Brothers, 1885–1887” (105 drawings; Ochsner 134, O’Gorman 9; microfilm reel 8, project 2). Identified by a long side elevation in graphite on tracing paper, pencilled “(2)”; entries 8–12 are the folder’s five side-elevation sketches. Harvard DRS 499504193; the image here is the full-size file from Harvard (5000×2114 px). Evidence limit: A design sketch of the long side.",
      "rights_status": "Houghton Library: images linked to the finding aid are for teaching or individual research; other use, including mounting on other systems or redistribution, requires the curator’s permission. Hosted here at the owner’s direction (2026-09-28). The drawings date from 1885–1887. Credit: Houghton Library, Harvard University.",
      "retrieval_status": "supplied by the owner 2026-09-28 from Harvard DRS (download URL recorded with each file); full-size copy in repository",
      "local_path": "research/public/glessner-houghton-gle-b9.jpg",
      "preview_path": "research/public/glessner-houghton-gle-b9-thumb.jpg",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504193/full/full/0/default.jpg"
    },
    {
      "id": "pa-glessner-houghton-gle-e5y",
      "title": "Richardson drawing GLE E5y: Gas brackets in vestibule (working drawing)",
      "url": "https://hollisarchives.lib.harvard.edu/catalog/hou00434_hou00434c00106",
      "kind": "acquired architectural drawing (Houghton Library)",
      "date": "1885–1887 (project dates; sheet undated)",
      "notes": "Houghton drawing GLE E5y: “Gas brackets in vestibule, working drawing. Graphite on drawing paper; scale: 1 1/2\":1'” (catalog entry 55; Box 4, Folder 2). Henry Hobson Richardson drawings, circa 1886–1940, Houghton Library, Harvard College Library; “Chicago, Ill. J. J. Glessner house (GLE), 1885–1887. Client: John Jacob Brothers (1843–1936). Contractor: Norcross Brothers, 1885–1887” (105 drawings; Ochsner 134, O’Gorman 9; microfilm reel 8, project 2). Identified by inscribed “Gas Brackets in Vestibule. House for J. J. Glessner Esq. No. 121. Chicago, Ill. Scale 1½ in = 1 ft”, matching entry 55 word for word. Harvard DRS 499504233; the image here is the full-size file from Harvard (5000×3418 px). Evidence limit: A working drawing for a fitting; whether it was installed as drawn, and still in 1904, needs a photograph or inventory.",
      "rights_status": "Houghton Library: images linked to the finding aid are for teaching or individual research; other use, including mounting on other systems or redistribution, requires the curator’s permission. Hosted here at the owner’s direction (2026-09-28). The drawings date from 1885–1887. Credit: Houghton Library, Harvard University.",
      "retrieval_status": "supplied by the owner 2026-09-28 from Harvard DRS (download URL recorded with each file); full-size copy in repository",
      "local_path": "research/public/glessner-houghton-gle-e5y.jpg",
      "preview_path": "research/public/glessner-houghton-gle-e5y-thumb.jpg",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504233/full/full/0/default.jpg"
    },
    {
      "id": "pa-glessner-houghton-gle-e3",
      "title": "Richardson drawing GLE E3: Library: fireplace wall (working drawing)",
      "url": "https://hollisarchives.lib.harvard.edu/catalog/hou00434_hou00434c00106",
      "kind": "acquired architectural drawing (Houghton Library)",
      "date": "1885–1887 (project dates; sheet undated)",
      "notes": "Houghton drawing GLE E3 (final letter illegible): “Library: fireplace wall, working drawing. Graphite, watercolor on tracing paper; scale: 3/4\":1'” (catalog entry 59; Box 4, Folder 4). Henry Hobson Richardson drawings, circa 1886–1940, Houghton Library, Harvard College Library; “Chicago, Ill. J. J. Glessner house (GLE), 1885–1887. Client: John Jacob Brothers (1843–1936). Contractor: Norcross Brothers, 1885–1887” (105 drawings; Ochsner 134, O’Gorman 9; microfilm reel 8, project 2). Identified by inscribed “Library of Mr. Glessner’s House”; graphite and red watercolor on tracing paper, which is entry 59 (entry 60, the same wall, is on tracing cloth). Harvard DRS 499504237; the image here is the full-size file from Harvard (5001×3312 px). Evidence limit: A working drawing. Compare with HABS photo 8, the library c. 1923.",
      "rights_status": "Houghton Library: images linked to the finding aid are for teaching or individual research; other use, including mounting on other systems or redistribution, requires the curator’s permission. Hosted here at the owner’s direction (2026-09-28). The drawings date from 1885–1887. Credit: Houghton Library, Harvard University.",
      "retrieval_status": "supplied by the owner 2026-09-28 from Harvard DRS (download URL recorded with each file); full-size copy in repository",
      "local_path": "research/public/glessner-houghton-gle-e3.jpg",
      "preview_path": "research/public/glessner-houghton-gle-e3-thumb.jpg",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504237/full/full/0/default.jpg"
    },
    {
      "id": "pa-glessner-houghton-gle-e4d",
      "title": "Richardson drawing GLE E4d: Drawing room: fireplace wall (working drawing)",
      "url": "https://hollisarchives.lib.harvard.edu/catalog/hou00434_hou00434c00106",
      "kind": "acquired architectural drawing (Houghton Library)",
      "date": "1885–1887 (project dates; sheet undated)",
      "notes": "Houghton drawing GLE E4d: “Drawing Room: fireplace wall, working drawing. Graphite, watercolor on tracing paper; scale: 3/4\":1'” (catalog entry 69; Box 4, Folder 9). Henry Hobson Richardson drawings, circa 1886–1940, Houghton Library, Harvard College Library; “Chicago, Ill. J. J. Glessner house (GLE), 1885–1887. Client: John Jacob Brothers (1843–1936). Contractor: Norcross Brothers, 1885–1887” (105 drawings; Ochsner 134, O’Gorman 9; microfilm reel 8, project 2). Identified by inscribed “House for J. J. Glessner Esq. Drawing Room.”; a fireplace wall in graphite and watercolor on tracing paper, which is entry 69 (entry 68 is on drawing paper). Harvard DRS 499504241; the image here is the full-size file from Harvard (5000×3288 px). Evidence limit: A working drawing; no HABS photograph shows the drawing room.",
      "rights_status": "Houghton Library: images linked to the finding aid are for teaching or individual research; other use, including mounting on other systems or redistribution, requires the curator’s permission. Hosted here at the owner’s direction (2026-09-28). The drawings date from 1885–1887. Credit: Houghton Library, Harvard University.",
      "retrieval_status": "supplied by the owner 2026-09-28 from Harvard DRS (download URL recorded with each file); full-size copy in repository",
      "local_path": "research/public/glessner-houghton-gle-e4d.jpg",
      "preview_path": "research/public/glessner-houghton-gle-e4d-thumb.jpg",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504241/full/full/0/default.jpg"
    }
  ],
  "maps": [
    {
      "id": "MAP-1911-20",
      "title": "1911 Sanborn · Sheet 20 · 16th–18th Streets",
      "date": 1911,
      "local_path": "maps/originals/sanborn-1911-sheet-20.jpg",
      "source_id": "MAP-1911-20",
      "notes": "Compare with 1904. Do not backdate 1911 occupants, institutional labels, garage conversions or utilities without evidence. Not georeferenced."
    },
    {
      "id": "MAP-1911-28",
      "title": "1911 Sanborn · Sheet 28 · 18th–20th Streets",
      "date": 1911,
      "local_path": "maps/originals/sanborn-1911-sheet-28.jpg",
      "source_id": "MAP-1911-28",
      "notes": "Compare with 1904. Do not backdate 1911 occupants, institutional labels, garage conversions or utilities without evidence. Not georeferenced."
    },
    {
      "id": "MAP-1911-35",
      "title": "1911 Sanborn · Sheet 35 · 20th–22nd Streets",
      "date": 1911,
      "local_path": "maps/originals/sanborn-1911-sheet-35.jpg",
      "source_id": "MAP-1911-35",
      "notes": "Compare with 1904. Do not backdate 1911 occupants, institutional labels, garage conversions or utilities without evidence. Not georeferenced."
    },
    {
      "id": "MAP-1911-key",
      "title": "1911 Sanborn · Key · symbols and materials",
      "date": 1911,
      "local_path": "maps/originals/sanborn-1911-key.jpg",
      "source_id": "MAP-1911-key",
      "notes": "Compare with 1904. Do not backdate 1911 occupants, institutional labels, garage conversions or utilities without evidence. Not georeferenced."
    },
    {
      "id": "MAP-1886",
      "title": "1886 Robinson · restore lost north-block houses",
      "date": 1886,
      "local_path": "maps/originals/robinson-1886-north-block.jpg",
      "source_id": "MAP-1886",
      "notes": "Restricted evidentiary purpose: 1609,1611,1620. Footprints are lower detail; no invented height or facade."
    },
    {
      "id": "pa-glessner-habs-sheet-1",
      "title": "Glessner HABS · sheet 1 · Site plan",
      "date": 1963,
      "local_path": "research/public/glessner-habs-sheet-1.png",
      "source_id": "pa-glessner-habs-sheet-1",
      "notes": "Later measured survey; original TIFF available in source record. Exclude circa-1955 rear wooden stair from 1904. Probable historic partitions remain labeled probable. Elevation datum is drawing-local, not City Datum."
    },
    {
      "id": "pa-glessner-habs-sheet-2",
      "title": "Glessner HABS · sheet 2 · First floor plan",
      "date": 1963,
      "local_path": "research/public/glessner-habs-sheet-2.png",
      "source_id": "pa-glessner-habs-sheet-2",
      "notes": "Later measured survey; original TIFF available in source record. Exclude circa-1955 rear wooden stair from 1904. Probable historic partitions remain labeled probable. Elevation datum is drawing-local, not City Datum."
    },
    {
      "id": "pa-glessner-habs-sheet-3",
      "title": "Glessner HABS · sheet 3 · Second floor plan",
      "date": 1963,
      "local_path": "research/public/glessner-habs-sheet-3.png",
      "source_id": "pa-glessner-habs-sheet-3",
      "notes": "Later measured survey; original TIFF available in source record. Exclude circa-1955 rear wooden stair from 1904. Probable historic partitions remain labeled probable. Elevation datum is drawing-local, not City Datum."
    },
    {
      "id": "pa-glessner-habs-sheet-4",
      "title": "Glessner HABS · sheet 4 · Section A–A",
      "date": 1963,
      "local_path": "research/public/glessner-habs-sheet-4.png",
      "source_id": "pa-glessner-habs-sheet-4",
      "notes": "Later measured survey; original TIFF available in source record. Exclude circa-1955 rear wooden stair from 1904. Probable historic partitions remain labeled probable. Elevation datum is drawing-local, not City Datum."
    },
    {
      "id": "pa-glessner-habs-sheet-5",
      "title": "Glessner HABS · sheet 5 · Masonry details",
      "date": 1963,
      "local_path": "research/public/glessner-habs-sheet-5.png",
      "source_id": "pa-glessner-habs-sheet-5",
      "notes": "Later measured survey; original TIFF available in source record. Exclude circa-1955 rear wooden stair from 1904. Probable historic partitions remain labeled probable. Elevation datum is drawing-local, not City Datum."
    },
    {
      "id": "pa-glessner-habs-sheet-6",
      "title": "Glessner HABS · sheet 6 · Front elevation",
      "date": 1965,
      "local_path": "research/public/glessner-habs-sheet-6.png",
      "source_id": "pa-glessner-habs-sheet-6",
      "notes": "Later measured survey; original TIFF available in source record. Exclude circa-1955 rear wooden stair from 1904. Probable historic partitions remain labeled probable. Elevation datum is drawing-local, not City Datum. Front-elevation sheet dated April 6, 1965 (photogrammetry), later than the 1963 plan sheets."
    },
    {
      "id": "pa-glessner-habs-photo-01",
      "title": "Glessner HABS · photo 1 · Exterior from northwest (1963 photograph)",
      "date": 1963,
      "local_path": "research/public/glessner-habs-photo-01.jpg",
      "source_id": "pa-glessner-habs-photo-01",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060903pu.tif",
      "notes": "Cervin Robinson, photographer, for HABS, July 23, 1963. Shows the house in 1963, after the Glessner family years. Use for surviving exterior fabric, not as the 1904 state. LOC HABS ILL,16-CHIG,17--1."
    },
    {
      "id": "pa-glessner-habs-photo-02",
      "title": "Glessner HABS · photo 2 · Front elevation (c. 1923 photograph)",
      "date": "c. 1923",
      "local_path": "research/public/glessner-habs-photo-02.jpg",
      "source_id": "pa-glessner-habs-photo-02",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060904pu.tif",
      "notes": "HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904. LOC HABS ILL,16-CHIG,17--2."
    },
    {
      "id": "pa-glessner-habs-photo-03",
      "title": "Glessner HABS · photo 3 · 18th Street arch (c. 1923 photograph)",
      "date": "c. 1923",
      "local_path": "research/public/glessner-habs-photo-03.jpg",
      "source_id": "pa-glessner-habs-photo-03",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060905pu.tif",
      "notes": "HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904. LOC HABS ILL,16-CHIG,17--3."
    },
    {
      "id": "pa-glessner-habs-photo-04",
      "title": "Glessner HABS · photo 4 · Detail: gable and chimney 18th Street side (c. 1923 photograph)",
      "date": "c. 1923",
      "local_path": "research/public/glessner-habs-photo-04.jpg",
      "source_id": "pa-glessner-habs-photo-04",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060906pu.tif",
      "notes": "HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904. LOC HABS ILL,16-CHIG,17--4."
    },
    {
      "id": "pa-glessner-habs-photo-05",
      "title": "Glessner HABS · photo 5 · Interior court (c. 1923 photograph)",
      "date": "c. 1923",
      "local_path": "research/public/glessner-habs-photo-05.jpg",
      "source_id": "pa-glessner-habs-photo-05",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060907pu.tif",
      "notes": "HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904. LOC HABS ILL,16-CHIG,17--5."
    },
    {
      "id": "pa-glessner-habs-photo-06",
      "title": "Glessner HABS · photo 6 · First floor staircase: main hall north end (c. 1923 photograph)",
      "date": "c. 1923",
      "local_path": "research/public/glessner-habs-photo-06.jpg",
      "source_id": "pa-glessner-habs-photo-06",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060908pu.tif",
      "notes": "HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904. LOC HABS ILL,16-CHIG,17--6."
    },
    {
      "id": "pa-glessner-habs-photo-07",
      "title": "Glessner HABS · photo 7 · First floor stairhall: south (c. 1923 photograph)",
      "date": "c. 1923",
      "local_path": "research/public/glessner-habs-photo-07.jpg",
      "source_id": "pa-glessner-habs-photo-07",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060909pu.tif",
      "notes": "HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904. LOC HABS ILL,16-CHIG,17--7."
    },
    {
      "id": "pa-glessner-habs-photo-08",
      "title": "Glessner HABS · photo 8 · Library: west and north sides (c. 1923 photograph)",
      "date": "c. 1923",
      "local_path": "research/public/glessner-habs-photo-08.jpg",
      "source_id": "pa-glessner-habs-photo-08",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060910pu.tif",
      "notes": "HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904. LOC HABS ILL,16-CHIG,17--8."
    },
    {
      "id": "pa-glessner-habs-photo-09",
      "title": "Glessner HABS · photo 9 · School room (c. 1923 photograph)",
      "date": "c. 1923",
      "local_path": "research/public/glessner-habs-photo-09.jpg",
      "source_id": "pa-glessner-habs-photo-09",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060911pu.tif",
      "notes": "HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904. LOC HABS ILL,16-CHIG,17--9."
    },
    {
      "id": "pa-glessner-habs-photo-10",
      "title": "Glessner HABS · photo 10 · Dining room: west and north sides (c. 1923 photograph)",
      "date": "c. 1923",
      "local_path": "research/public/glessner-habs-photo-10.jpg",
      "source_id": "pa-glessner-habs-photo-10",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060912pu.tif",
      "notes": "HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904. LOC HABS ILL,16-CHIG,17--10."
    },
    {
      "id": "pa-glessner-habs-photo-11",
      "title": "Glessner HABS · photo 11 · Upper hall — north and west sides (c. 1923 photograph)",
      "date": "c. 1923",
      "local_path": "research/public/glessner-habs-photo-11.jpg",
      "source_id": "pa-glessner-habs-photo-11",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060913pu.tif",
      "notes": "HABS photocopy of a c. 1923 photograph published in J. J. Glessner, The Story of a House (1923). Shows the house under Glessner family occupancy about 19 years after the 1904 target. Rooms, finishes and furnishings may have changed since 1904; corroborate before modelling a detail as 1904. LOC HABS ILL,16-CHIG,17--11."
    },
    {
      "id": "pa-glessner-habs-photo-12",
      "title": "Glessner HABS · photo 12 · Photocopy of preliminary design (preliminary design)",
      "date": null,
      "local_path": "research/public/glessner-habs-photo-12.jpg",
      "source_id": "pa-glessner-habs-photo-12",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060914pu.tif",
      "notes": "HABS photocopy of H. H. Richardson’s preliminary design, courtesy Houghton Library, Harvard University. A preliminary design is not the as-built form. LOC HABS ILL,16-CHIG,17--12."
    },
    {
      "id": "pa-glessner-habs-photo-13",
      "title": "Glessner HABS · photo 13 · North elevation — level: left stereopair (1965 photogrammetric plate)",
      "date": 1965,
      "local_path": "research/public/glessner-habs-photo-13.jpg",
      "source_id": "pa-glessner-habs-photo-13",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060915pu.tif",
      "notes": "Photographs by Perry E. Borchers, Ohio State University, 1965 (HABS index to photographs, page 1). A 1965 photogrammetric stereo plate (the source of the sheet-6 elevation). Street and neighbours are 1965, not 1904. LOC HABS ILL,16-CHIG,17--13."
    },
    {
      "id": "pa-glessner-habs-photo-14",
      "title": "Glessner HABS · photo 14 · North elevation — inclined: left stereopair (1965 photogrammetric plate)",
      "date": 1965,
      "local_path": "research/public/glessner-habs-photo-14.jpg",
      "source_id": "pa-glessner-habs-photo-14",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060916pu.tif",
      "notes": "Photographs by Perry E. Borchers, Ohio State University, 1965 (HABS index to photographs, page 1). A 1965 photogrammetric stereo plate (the source of the sheet-6 elevation). Street and neighbours are 1965, not 1904. LOC HABS ILL,16-CHIG,17--14."
    },
    {
      "id": "pa-glessner-habs-photo-15",
      "title": "Glessner HABS · photo 15 · North elevation: right stereopair (1965 photogrammetric plate)",
      "date": 1965,
      "local_path": "research/public/glessner-habs-photo-15.jpg",
      "source_id": "pa-glessner-habs-photo-15",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060917pu.tif",
      "notes": "Photographs by Perry E. Borchers, Ohio State University, 1965 (HABS index to photographs, page 1). A 1965 photogrammetric stereo plate (the source of the sheet-6 elevation). Street and neighbours are 1965, not 1904. LOC HABS ILL,16-CHIG,17--15."
    },
    {
      "id": "pa-glessner-habs-photo-16",
      "title": "Glessner HABS · photo 16 · East elevation — level (1965 photogrammetric plate)",
      "date": 1965,
      "local_path": "research/public/glessner-habs-photo-16.jpg",
      "source_id": "pa-glessner-habs-photo-16",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060918pu.tif",
      "notes": "Photographs by Perry E. Borchers, Ohio State University, 1965 (HABS index to photographs, page 1). A 1965 photogrammetric stereo plate (the source of the sheet-6 elevation). Street and neighbours are 1965, not 1904. LOC HABS ILL,16-CHIG,17--16."
    },
    {
      "id": "pa-glessner-habs-photo-17",
      "title": "Glessner HABS · photo 17 · Northeast — angled view (1965 photogrammetric plate)",
      "date": 1965,
      "local_path": "research/public/glessner-habs-photo-17.jpg",
      "source_id": "pa-glessner-habs-photo-17",
      "archive_url": "https://archive.org/download/master-pnp-habshaer-il-il0100-il0118-photos/master-pnp-habshaer-il-il0100-il0118-photos-060919pu.tif",
      "notes": "Photographs by Perry E. Borchers, Ohio State University, 1965 (HABS index to photographs, page 1). A 1965 photogrammetric stereo plate (the source of the sheet-6 elevation). Street and neighbours are 1965, not 1904. LOC HABS ILL,16-CHIG,17--17."
    },
    {
      "id": "pa-glessner-houghton-gle-f1",
      "title": "Glessner · Richardson drawing GLE F1 · Perspective sketch",
      "date": "1885–1887",
      "local_path": "research/public/glessner-houghton-gle-f1.jpg",
      "source_id": "pa-glessner-houghton-gle-f1",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504169/full/full/0/default.jpg",
      "notes": "H. H. Richardson office drawing, Houghton Library, Harvard University (Box 2, Folder 6). A design-stage perspective, not the as-built house."
    },
    {
      "id": "pa-glessner-houghton-gle-d15",
      "title": "Glessner · Richardson drawing GLE D15 · Court interior sketch (Glessner?)",
      "date": "1885–1887",
      "local_path": "research/public/glessner-houghton-gle-d15.jpg",
      "source_id": "pa-glessner-houghton-gle-d15",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504173/full/full/0/default.jpg",
      "notes": "H. H. Richardson office drawing, Houghton Library, Harvard University (Box 2, Folder 6). A preliminary sketch; the catalog itself queries the attribution."
    },
    {
      "id": "pa-glessner-houghton-gle-b2",
      "title": "Glessner · Richardson drawing GLE B2 · Facade (watercolor)",
      "date": "1885–1887",
      "local_path": "research/public/glessner-houghton-gle-b2.jpg",
      "source_id": "pa-glessner-houghton-gle-b2",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504177/full/full/0/default.jpg",
      "notes": "H. H. Richardson office drawing, Houghton Library, Harvard University (Drawer 16, Folder 8). A design drawing. It is the drawing HABS photo 12 copies (“preliminary design, courtesy Houghton Library”)."
    },
    {
      "id": "pa-glessner-houghton-gle-b1",
      "title": "Glessner · Richardson drawing GLE B1 · Facade elevation (variant)",
      "date": "1885–1887",
      "local_path": "research/public/glessner-houghton-gle-b1.jpg",
      "source_id": "pa-glessner-houghton-gle-b1",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504181/full/full/0/default.jpg",
      "notes": "H. H. Richardson office drawing, Houghton Library, Harvard University (Drawer 16, Folder 8). A design variant, not the built facade."
    },
    {
      "id": "pa-glessner-houghton-gle-b6",
      "title": "Glessner · Richardson drawing GLE B6 · Sketch elevation of facade",
      "date": "1885–1887",
      "local_path": "research/public/glessner-houghton-gle-b6.jpg",
      "source_id": "pa-glessner-houghton-gle-b6",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504185/full/full/0/default.jpg",
      "notes": "H. H. Richardson office drawing, Houghton Library, Harvard University (Box 2, Folder 7). A design sketch."
    },
    {
      "id": "pa-glessner-houghton-gle-b7",
      "title": "Glessner · Richardson drawing GLE B7 · Sketch elevation of side",
      "date": "1885–1887",
      "local_path": "research/public/glessner-houghton-gle-b7.jpg",
      "source_id": "pa-glessner-houghton-gle-b7",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504189/full/full/0/default.jpg",
      "notes": "H. H. Richardson office drawing, Houghton Library, Harvard University (Box 2, Folder 7, Box 2, Folder 8). A design sketch of the long side."
    },
    {
      "id": "pa-glessner-houghton-gle-b9",
      "title": "Glessner · Richardson drawing GLE B9 · Sketch elevation of side",
      "date": "1885–1887",
      "local_path": "research/public/glessner-houghton-gle-b9.jpg",
      "source_id": "pa-glessner-houghton-gle-b9",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504193/full/full/0/default.jpg",
      "notes": "H. H. Richardson office drawing, Houghton Library, Harvard University (Box 2, Folder 7, Box 2, Folder 8). A design sketch of the long side."
    },
    {
      "id": "pa-glessner-houghton-gle-e5y",
      "title": "Glessner · Richardson drawing GLE E5y · Gas brackets in vestibule (working drawing)",
      "date": "1885–1887",
      "local_path": "research/public/glessner-houghton-gle-e5y.jpg",
      "source_id": "pa-glessner-houghton-gle-e5y",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504233/full/full/0/default.jpg",
      "notes": "H. H. Richardson office drawing, Houghton Library, Harvard University (Box 4, Folder 2). A working drawing for a fitting; whether it was installed as drawn, and still in 1904, needs a photograph or inventory."
    },
    {
      "id": "pa-glessner-houghton-gle-e3",
      "title": "Glessner · Richardson drawing GLE E3 · Library: fireplace wall (working drawing)",
      "date": "1885–1887",
      "local_path": "research/public/glessner-houghton-gle-e3.jpg",
      "source_id": "pa-glessner-houghton-gle-e3",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504237/full/full/0/default.jpg",
      "notes": "H. H. Richardson office drawing, Houghton Library, Harvard University (Box 4, Folder 4). A working drawing. Compare with HABS photo 8, the library c. 1923."
    },
    {
      "id": "pa-glessner-houghton-gle-e4d",
      "title": "Glessner · Richardson drawing GLE E4d · Drawing room: fireplace wall (working drawing)",
      "date": "1885–1887",
      "local_path": "research/public/glessner-houghton-gle-e4d.jpg",
      "source_id": "pa-glessner-houghton-gle-e4d",
      "archive_url": "https://mps.lib.harvard.edu/assets/images/drs:499504241/full/full/0/default.jpg",
      "notes": "H. H. Richardson office drawing, Houghton Library, Harvard University (Box 4, Folder 9). A working drawing; no HABS photograph shows the drawing room."
    }
  ],
  "glessner": {
    "summary": "1904 requires reconciling original design and 1888 imagery, 1892 electrical/interior changes, 1963 HABS measured sheets, and modern restoration. All six measured drawings and the 27-page report are acquired. The HABS granite reading adds a third account (alternating 6/8 inches) to conflicting museum summaries; do not average them.",
    "sections": [
      {
        "title": "Construction",
        "text": "1886–1887",
        "source_ids": [
          "G01"
        ]
      },
      {
        "title": "Occupied",
        "text": "December 1887",
        "source_ids": [
          "G04"
        ]
      },
      {
        "title": "Architect",
        "text": "Henry Hobson Richardson",
        "source_ids": [
          "G01"
        ]
      },
      {
        "title": "Address",
        "text": "1800 South Prairie Avenue; southwest corner of 18th Street",
        "source_ids": [
          "G01"
        ]
      },
      {
        "title": "Foundation material",
        "text": "Illinois dolomite",
        "source_ids": [
          "G02"
        ]
      },
      {
        "title": "Wall material",
        "text": "Braggville pink granite facing common-brick structural wall",
        "source_ids": [
          "G02"
        ]
      },
      {
        "title": "Granite thickness",
        "text": "UNRESOLVED: 8–10 inches in House page versus about 7 inches in Collection sale-flyer discussion",
        "source_ids": [
          "G02",
          "G03"
        ]
      },
      {
        "title": "Gross floor area",
        "text": "over 17,000 square feet; not a precise measured quantity",
        "source_ids": [
          "G02"
        ]
      },
      {
        "title": "Plan configuration",
        "text": "E-shaped; courtyard oriented south",
        "source_ids": [
          "G02",
          "G04"
        ]
      },
      {
        "title": "1904 lighting",
        "text": "Electric service installed summer 1892; kerosene lamps still documented 1901",
        "source_ids": [
          "G07"
        ]
      },
      {
        "title": "1892 interior change",
        "text": "Pretyman parlor wall covering; Morris wallpaper in other rooms",
        "source_ids": [
          "G07"
        ]
      },
      {
        "title": "Corner guest room wallpaper",
        "text": "Double Bough from 1892; replaced with same pattern 1916",
        "source_ids": [
          "G06"
        ]
      },
      {
        "title": "1904 basement activity",
        "text": "Frances Glessner silverwork bench introduced in 1904; exact month unverified",
        "source_ids": [
          "G08"
        ]
      },
      {
        "title": "Porte-cochere",
        "text": "Historic carriage doors removed in 1950s, recreated from ca1888 photograph",
        "source_ids": [
          "G05"
        ]
      },
      {
        "title": "1923 photo use",
        "text": "Some altered lighting fixtures in 1923 photographs have uncertain installation dates",
        "source_ids": [
          "G07"
        ]
      },
      {
        "title": "granite facing thickness",
        "text": "6 and 8 in. Brick backing; Wellesley granite facing with deeper returns. August 1963 HABS observation; match with 1904 phase before use [PDF/sheet locator: 22]",
        "source_ids": [
          "pa-glessner-habs-data"
        ]
      },
      {
        "title": "roof tile module",
        "text": "6 wide; 5 exposed in. Survey describes tar-covered terracotta; reconcile restoration and original specifications. August 1963 HABS observation; match with 1904 phase before use [PDF/sheet locator: 22]",
        "source_ids": [
          "pa-glessner-habs-data"
        ]
      },
      {
        "title": "principal oak floor strip width",
        "text": "2.25 in. 1963 architectural description. August 1963 HABS observation; match with 1904 phase before use [PDF/sheet locator: 23]",
        "source_ids": [
          "pa-glessner-habs-data"
        ]
      },
      {
        "title": "bathroom and service-floor tile module",
        "text": "6 in square. Service floors alternate red/tan; bathrooms separately described. August 1963 HABS observation; match with 1904 phase before use [PDF/sheet locator: 23]",
        "source_ids": [
          "pa-glessner-habs-data"
        ]
      },
      {
        "title": "corridor wainscot height",
        "text": "3 ft. Tower and wing corridors. August 1963 HABS observation; match with 1904 phase before use [PDF/sheet locator: 23]",
        "source_ids": [
          "pa-glessner-habs-data"
        ]
      },
      {
        "title": "bathroom tile height",
        "text": "5 ft. Six-inch square wall tiles. August 1963 HABS observation; match with 1904 phase before use [PDF/sheet locator: 23]",
        "source_ids": [
          "pa-glessner-habs-data"
        ]
      },
      {
        "title": "glazed white service brick",
        "text": "2.25 × 8.25 in. Black joints 1/8 in; kitchen/pantries/laundry/stable/harness spaces. August 1963 HABS observation; match with 1904 phase before use [PDF/sheet locator: 23]",
        "source_ids": [
          "pa-glessner-habs-data"
        ]
      },
      {
        "title": "overall east-west extent",
        "text": "161 ft 3 in imperial. Read dimension annotation along 18th Street edge; first-floor plan, 1963. 1963/1965 measured record; assess against target1904 [PDF/sheet locator: see source]",
        "source_ids": [
          "pa-glessner-habs-sheet-2"
        ]
      },
      {
        "title": "overall east/front north-south extent",
        "text": "74 ft 0 in imperial. Read dimension annotation at Prairie Avenue frontage; 1963. 1963/1965 measured record; assess against target1904 [PDF/sheet locator: see source]",
        "source_ids": [
          "pa-glessner-habs-sheet-2"
        ]
      },
      {
        "title": "wood stair behind service wing",
        "text": "1955 approximate year added. Sheet explicitly notes circa1955; EXCLUDE this stair from 1904. 1963/1965 measured record; assess against target1904 [PDF/sheet locator: see source]",
        "source_ids": [
          "pa-glessner-habs-sheet-2"
        ]
      },
      {
        "title": "service stalls",
        "text": " . Dotted lines are PROBABLE stall partitions based on early drawings, not surveyed extant partitions. 1963/1965 measured record; assess against target1904 [PDF/sheet locator: see source]",
        "source_ids": [
          "pa-glessner-habs-sheet-2"
        ]
      },
      {
        "title": "coachmen/hayloft partitions",
        "text": " . Dotted lines reconstruct probable separation from early drawings; retain inference status. 1963/1965 measured record; assess against target1904 [PDF/sheet locator: see source]",
        "source_ids": [
          "pa-glessner-habs-sheet-3"
        ]
      },
      {
        "title": "north chimney top above door datum",
        "text": "48.62 ft. Annotation 48.62 ±0.02. April6 1965 photogrammetry; door datum0.00. 1963/1965 measured record; assess against target1904 [PDF/sheet locator: see source]",
        "source_ids": [
          "pa-glessner-habs-sheet-6"
        ]
      },
      {
        "title": "second-floor window soffit above door datum",
        "text": "24.3 ft. Read drawing annotation; April6 1965 photogrammetry. 1963/1965 measured record; assess against target1904 [PDF/sheet locator: see source]",
        "source_ids": [
          "pa-glessner-habs-sheet-6"
        ]
      },
      {
        "title": "sidewalk before door relative to door datum",
        "text": "-0.74 ft. Read drawing annotation; do not conflate with Chicago City Datum. 1963/1965 measured record; assess against target1904 [PDF/sheet locator: see source]",
        "source_ids": [
          "pa-glessner-habs-sheet-6"
        ]
      },
      {
        "title": "HABS photographs",
        "source_ids": [
          "G01-P",
          "pa-glessner-habs-captions",
          "pa-glessner-habs-photo-02",
          "pa-glessner-habs-photo-08"
        ],
        "text": "The HABS record (IL-1015) holds 17 photographs, all now in Maps & images. Photo 1 is Cervin Robinson’s exterior from the northwest, July 23, 1963. Photos 2 to 11 are HABS copies of c. 1923 photographs from J. J. Glessner’s The Story of a House: the front elevation, the 18th Street arch, the gable and chimney on 18th Street, the interior court, the first-floor stair hall (north end and south), the library, the schoolroom, the dining room and the upper hall. They are the nearest views to 1904 in the set, but they are 19 years later. Photo 12 copies H. H. Richardson’s preliminary design (Houghton Library, Harvard). Photos 13 to 17 are 1965 photogrammetric plates by Perry E. Borchers of Ohio State University: three of the north elevation, the east elevation and a northeast angled view."
      },
      {
        "title": "Richardson’s drawings (Houghton Library)",
        "source_ids": [
          "G16",
          "pa-glessner-houghton-gle-b2",
          "pa-glessner-houghton-gle-e3",
          "pa-glessner-houghton-gle-e5y"
        ],
        "text": "Houghton Library holds 105 drawings from H. H. Richardson’s office for the house (1885–1887). Ten are now in Maps & images: a perspective sketch (F1), a court sketch on Richardson’s Brookline letterhead (D15), two facade designs in watercolor (B1, B2), a facade sketch (B6), two sketches of the long side (B7, B9), and three interior working drawings: the vestibule gas brackets (E5y), the library fireplace wall (E3) and the drawing-room fireplace wall (E4d). The design drawings show intentions, not the built house. B2 is the drawing HABS photo 12 copies. The working drawings are the nearest record of the interiors as built, to be checked against the c. 1923 photographs."
      }
    ]
  },
  "occupancy_candidates": [
    {
      "address": 1600,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "John G. Shortall",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1604,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "John L. Shortall household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1608,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Henry L. Frank household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1612,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Charles Edward Brown; George F. Brown; George F. Brown Jr.",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1616,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "William R. Stirling household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1619,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Howard E. Perry household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1620,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "F. VanS. Hibbard household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1621,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "John H. Hamline household; George A. Mead",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1625,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Hugh J. McBirney household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1626,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "A. Longini household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1628,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "M. Einstein household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1634,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Erastus Foote; T. H. Bellas household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1636,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "H. Morris Johnston household; H. McB. Johnston; Morris L. Johnston",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1637,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "William Gold Hibbard Jr. household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1638,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Robert B. Gregory household; Elizabeth Gregory; Miss Gregory",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1700,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Blewett Lee household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1701,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. William Gold Hibbard; Mrs. O. Van Schaack Ward",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1706,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "J. G. M. Glessner household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1708,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "A. A. Carpenter Jr. household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1709,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Jesse Spalding household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1712,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "George A. McKinlock household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1720,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. James M. Walker",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1721,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Henry H. Walker household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1726,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "James R. Walker household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1729,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. George M. Pullman",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1730,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. Joseph E. Otis",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1736,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Hugh McBirney household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1800,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "John J. Glessner household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1801,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "W. W. Kimball household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1808,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Stanley Field household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1812,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Lawrence A. Young household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1815,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Arthur Meeker household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1816,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. Charles M. Henderson",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1823,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Thomas Dent household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1824,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Secor Cunningham household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1828,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Daniel B. Shipman",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1834,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Fernando Jones household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1900,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Elbridge G. Keith household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1901,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Norman B. Ream household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1904,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Walter W. Keith household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1905,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Marshall Field",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1906,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. Edson Keith",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1912,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Frank Orren Lowden household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1919,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Marshall Field Jr. household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1923,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. C. P. Kellogg; Mrs. Lois Kellogg",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1936,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "S. W. Allerton household; Robert H. Allerton",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 1945,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. Henry Corwith; Charles R. Corwith",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2000,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "John M. Clark household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2001,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "W. C. Free household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2003,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. H. W. Hoyt household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2005,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Casey A. Wood household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2009,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "M. A. Meyer household; E. F. Meyer; Albert Meyer; Carl Meyer; Abraham Meyer",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2010,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "W. L. Grey household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2011,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Augustus D. Lamb; Benjamin B. Lamb",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2013,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "William H. Reid household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2017,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "A. J. McBean household; George B. McBean; A. J. F. McBean household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2018,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "E. Walter Herrick; Mrs. L. A. Herrick; Louise Herrick; Mrs. Nicolas de Teresa; Isabel de Teresa",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2021,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. James L. High household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2026,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. D. Stettauer household; Charles S. Stettauer",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2027,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. J. J. Borland; Chauncey Blair Borland; Bruce Borland",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2031,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Samuel A. Tolman household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2033,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "F. R. Otis household; Charles T. Otis; Lucius J. Otis",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2035,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. H. O. Stone",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2036,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "E. Buckingham household; Clarence Buckingham",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2101,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Eugene S. Pike household; Eugene R. Pike household; William Wallace Pike",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2109,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Robert W. Roloson",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2110,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Edson Keith Jr. household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2112,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. M. M. Rothschild household; Jesse Rothschild",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2115,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Mrs. Philip D. Armour",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2120,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Frank S. Gorton household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2123,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Thomas H. Hubbart [OCR reading; verify spelling]",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2126,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Edward F. Robbins household",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    },
    {
      "address": 2140,
      "street": "Prairie Avenue",
      "year_label": 1904,
      "source_id": "civic-bluebook-1904",
      "source_locator": "printed pp.186–187; PDF pp.188–189",
      "listed_people": "Byron L. Smith household; Walter B. Smith; Harold C. Smith; Bruce D. Smith",
      "verification": "OCR-derived factual candidate; visual source-page check pending",
      "limits": "Selected names only; does not establish complete household, ownership, vacancy or building geometry."
    }
  ],
  "map_inventory": {
    "title": "Prairie Avenue map frontage inventory,16th–22nd Streets",
    "status": "Tentative manual transcription for reconciliation; not a complete cadastral census",
    "scope": "Every Prairie-facing printed address label observed on supplied1911sheets20,28,35; Calumet and Indiana excluded. Unnumbered open lots are not invented as buildings.",
    "source_attribution": "Uploaded copies supplied with expert map guidance. Source map dates1911 and1886 are provided by filenames/correspondence, not independently checked against edition metadata.",
    "temporal_rule": "1911 observations remain1911. The expert guidance supports working1904 footprint hypothesis except1609,1611,1620; it does not establish1904 occupancy, rear garages, use, or detailed alterations.",
    "story_notation_rule": "Raw notation preserved. B=basement;B.B.=brick basement;S.B.=stone basement according to uploaded key. Numeral is stories, not height in feet. Whole-building height cannot be inferred from story count.",
    "legend": {
      "D": "Dwelling",
      "F": "Flat",
      "S": "Store",
      "pink": "Brick",
      "yellow": "Frame",
      "blue": "Stone unless markedC.B.; narrow blue frontage on brick denotes stone front",
      "ochre": "Fireproof construction",
      "crossed_rectangle": "Stable"
    },
    "measurements": {
      "road_width_ft": 66,
      "road_width_basis": "66-foot annotations at Prairie intersections visible on1911sheets20,28,35; not a curb-to-curb width measurement",
      "west_alley_widths_ft": [
        20,
        18
      ],
      "west_alley_note": "20ft on sheets20/28 and northern35;18ft south of21st on35. Verify exact segments before use.",
      "scale": "Printed graphical Scale of Feet with0,50,100,150ft on1911maps. Robinson caption Scale100feet toOneInch.",
      "method": "Use original pixels, rectify photographed sheet with projective control, calibrate local printed scale and repeated66ft street widths; report uncertainty and verify against survey/HABS. Do not infer real size from display pixels, image DPI, wall-thickness numbers, or story symbols.",
      "georeferenced": false
    },
    "records": [
      {
        "address": "1600",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Corner dwelling; bay facing Prairie.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-001",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1604",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear 2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-002",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1608",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-003",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1612",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-004",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1616",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-005",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1620",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": null,
        "map_material_interpretation": "none",
        "map_use_label": "vacant dwelling site with rear stable",
        "notes": "No front dwelling in 1911; rear stable remains. Use 1886 exception for 1904.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-006",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1626",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear 1B/2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Attached to 1628; rear stable.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-007",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1628",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear 1B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Attached to1626; rear stable.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-008",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1630",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2BB",
        "map_material_interpretation": "frame",
        "map_use_label": "D",
        "notes": "Small attached dwelling.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-009",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1634",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Attached to1636.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-010",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1636",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Attached to1634.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-011",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1638",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2BB",
        "map_material_interpretation": "frame",
        "map_use_label": "D",
        "notes": "Irregular footprint; rear stable.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-012",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1700",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Number shares upper dwelling frontage with1702; verify entrance/address association.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-013",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1702",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Number shares upper dwelling frontage with1700; verify entrance/address association.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-014",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1706",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Attached southern dwelling.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-015",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1708",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-016",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1712",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-017",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1720",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2BB",
        "map_material_interpretation": "frame",
        "map_use_label": "D",
        "notes": "Bay-front dwelling; large rear stable.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-018",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1726",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-019",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1730",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear 2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-020",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1736",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Corner dwelling; rear garage.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-021",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1601",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "medium",
        "raw_story_basement_notation": "2",
        "map_material_interpretation": "frame",
        "map_use_label": "D",
        "notes": "Small dwelling north of station.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-022",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1605",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2",
        "map_material_interpretation": "frame",
        "map_use_label": "Illinois Central R.R. 16th St. Station",
        "notes": "1911 station use. The sheet prints 1605; transcribed 1603 until the sheet 20 census re-read it (T-1840).",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-023",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1607–1611",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "medium",
        "raw_story_basement_notation": "4",
        "map_material_interpretation": "brick",
        "map_use_label": "Auto Repairing 1st; Wind Shield Mfg. Abv.",
        "notes": "1911 replacement block. Expert guidance identifies replaced1904 houses specifically as1609 and1611; do not back-project commercial use.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-024",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1613",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "4",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Attached rowhouse.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-025",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1615",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "4",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Attached rowhouse.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-026",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1619",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "4",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-027",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1621",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Attached group1621/1623/1625.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-028",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1623",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Attached group1621/1623/1625.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-029",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1625",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; section4",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Attached group1621/1623/1625.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-030",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1637",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-031",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1701",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½S.B.",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Rear garages2 and1½; open porch annotation.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-032",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1709",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B/1B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Irregular bay footprint; rear garage1½.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-033",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1721",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Two curved Prairie-facing bays; rear garage2B. The sheet prints 1721; transcribed 1719 until the sheet 20 census re-read it (T-1840). The same property as the named Dexter record at 1721.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-034",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1729",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "20",
        "source_file": "1911 - Sheet 20(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "stone",
        "map_use_label": "D",
        "notes": "Large irregular stone dwelling; rear stone garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-20-035",
        "source_id": "MAP-1911-20"
      },
      {
        "address": "1800",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2B",
        "map_material_interpretation": "stone",
        "map_use_label": "D",
        "notes": "U-shaped courtyard house; north wing fronts18thSt and includes garage. Glessner property.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-036",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1808",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-037",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1812",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-038",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1816",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3S.B.; rear2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Rounded projecting front bays.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-039",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1824",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½B; rear2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-040",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1828",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-041",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1834",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3S.B.",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Open screened porch annotation.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-042",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1900",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear1B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-043",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1906",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Attached to1908.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-044",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1908",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½B; rear1B/2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Attached to1906.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-045",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1912",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½B; rear3B",
        "map_material_interpretation": "stone with brick rear",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-046",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1918 (1936)",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "medium",
        "raw_story_basement_notation": "2½S.B.; bay4B; rear2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Stacked address label reads 1918 over (1936) (re-read 2026-10-09, T-1841; first transcribed as 1916 (1930)). The drawn house carries the 1936 number: the Thompson/Allerton house, razed 1915 (sheet census ruling r28-allerton).",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-047",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1936",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": null,
        "map_material_interpretation": "none",
        "map_use_label": "vacant frontage",
        "notes": "Frontage label at vacant corner lot; no dwelling footprint.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-048",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1801",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "stone",
        "map_use_label": "D",
        "notes": "Corner dwelling with attached garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-049",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1811",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; section2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Rear garage1½.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-050",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1815",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "stone",
        "map_use_label": "D",
        "notes": "Rear garage2 plus R.CL.3B notation; greenhouse complex behind adjacent lots.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-051",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1823",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-052",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1827",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "stone with brick rear",
        "map_use_label": "D",
        "notes": "Rear barn2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-053",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1901",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "stone with brick rear",
        "map_use_label": "D",
        "notes": "Rear barn2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-054",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1905",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3S.B.",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Greenhouse marked at front bay; rear barn2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-055",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1919",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½S.B.",
        "map_material_interpretation": "brick",
        "map_use_label": "The Gatlin Institute",
        "notes": "1911 institutional use; rear garage cement floor. Do not assume1904use.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-056",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1923",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3S.B.",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-057",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "1945",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "28",
        "source_file": "1911 - Sheet 28(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3S.B.; rear2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Corner dwelling with rear stable2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-28-058",
        "source_id": "MAP-1911-28"
      },
      {
        "address": "2000",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3BB; section2BB",
        "map_material_interpretation": "frame",
        "map_use_label": "D",
        "notes": "Detached dwelling.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-059",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2010",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3BB; section2BB",
        "map_material_interpretation": "frame",
        "map_use_label": "D",
        "notes": "Detached dwelling similar to2000.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-060",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2018",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Narrow long dwelling; stable to rear.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-061",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2026",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "stone with brick rear",
        "map_use_label": "D",
        "notes": "Main block diagonal material division; rear stable.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-062",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2036",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3S.B.",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Corner house at21st; brick boundary wall6ft annotation.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-063",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2100",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3S.B.",
        "map_material_interpretation": "brick",
        "map_use_label": "McCormick Medical College",
        "notes": "1911 institutional use only. Brick boundary wall6ft.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-064",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2108",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-065",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2110",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-066",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2112",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Rear auto building2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-067",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2120",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2",
        "map_material_interpretation": "brick",
        "map_use_label": "Dress Making",
        "notes": "1911 commercial use only; rear building lettered VACANT 1ST / DRESS MAKING 2ND (re-read 2026-10-09, T-1842; first transcribed as an Electric Motor Repairing label).",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-068",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2126",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-069",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2130",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½ and3B; rear1B",
        "map_material_interpretation": "stone with brick rear",
        "map_use_label": "D",
        "notes": "Round front bay.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-070",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2140",
        "street": "South Prairie Avenue",
        "side": "west",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3S.B.",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Corner house with circular bay; front porch and exterior stair; rear stable.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-071",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2001",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-072",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2003",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Attached row.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-073",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2005",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Attached row.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-074",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2009",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½B; rear1B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-075",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2011",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½B; rear2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-076",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2013",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B",
        "map_material_interpretation": "fireproof construction",
        "map_use_label": "D",
        "notes": "Explicit Fire Proof Construction label; rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-077",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2017",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear1B/2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-078",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2021",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½B; rear2B/1B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-079",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2027",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½B; rear2B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Rear barn2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-080",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2031",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Attached row; rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-081",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2033",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Attached row; rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-082",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2035",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Corner rowhouse; rear mixed brick/frame building Brick1st annotation.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-083",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2101",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2½B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-084",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2109",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick",
        "map_use_label": "D",
        "notes": "Rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-085",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2115",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-086",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2123",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B; rear2B",
        "map_material_interpretation": "brick with stone front",
        "map_use_label": "D",
        "notes": "Rear garage2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-087",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2125",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "2BB; rear1BB",
        "map_material_interpretation": "frame",
        "map_use_label": "D",
        "notes": "Rear stable2.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-088",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2127",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick",
        "map_use_label": "F",
        "notes": "Attached flats with2129.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-089",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2129",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": "3B",
        "map_material_interpretation": "brick",
        "map_use_label": "F",
        "notes": "Attached flats with2127.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-090",
        "source_id": "MAP-1911-35"
      },
      {
        "address": "2141",
        "street": "South Prairie Avenue",
        "side": "east",
        "sheet": "35",
        "source_file": "1911 - Sheet 35(1).jpg",
        "observation_year": 1911,
        "address_confidence": "high",
        "raw_story_basement_notation": null,
        "map_material_interpretation": "none",
        "map_use_label": "vacant frontage",
        "notes": "Corner frontage has no dwelling footprint.",
        "dimensions_ft": null,
        "footprint_digitized": false,
        "id": "frontage-35-091",
        "source_id": "MAP-1911-35"
      }
    ],
    "exceptions_1904": [
      {
        "address": "1609",
        "target_year": 1904,
        "source_file": "1886 - use for lost buildings only(1).jpg",
        "source_map_year": 1886,
        "identification_source": "Maps 1-2_message(1).txt",
        "certainty": "Expert guidance identifies retained-through1904 footprint;1886 appearance not independently dated to1904",
        "footprint_observation": "Two adjoining simple rectangular yellow-filled rowhouse footprints occupy lot6, east side south of the16thStreet station block, explicitly labeled1609 and1611. Do not confuse with pink paired houses on lot7 immediately south.",
        "story_count": null,
        "dimensions_ft": null
      },
      {
        "address": "1611",
        "target_year": 1904,
        "source_file": "1886 - use for lost buildings only(1).jpg",
        "source_map_year": 1886,
        "identification_source": "Maps 1-2_message(1).txt",
        "certainty": "Expert guidance identifies retained-through1904 footprint;1886 appearance not independently dated to1904",
        "footprint_observation": "Southern half of same paired yellow-filled rectangular footprint as1609 on lot6, labeled1611; retain two houses for1904. No story count legible in Robinson sheet.",
        "story_count": null,
        "dimensions_ft": null
      },
      {
        "address": "1620",
        "target_year": 1904,
        "source_file": "1886 - use for lost buildings only(1).jpg",
        "source_map_year": 1886,
        "identification_source": "Maps 1-2_message(1).txt",
        "certainty": "Expert guidance identifies retained-through1904 footprint;1886 appearance not independently dated to1904",
        "footprint_observation": "West-side irregular pink footprint spans lots13–14; broad Prairie-facing rectangle with northwest/rear extension; restore for1904 based on expert guidance. No story count legible.",
        "story_count": null,
        "dimensions_ft": null
      }
    ],
    "limitations": [
      "Manual readings require second-person check at higher-resolution archival source.",
      "Inventory enumerates printed frontage labels, not legal parcels, ownership, or all outbuildings.",
      "Address aliases,parenthetical labels, and shared footprints must resolve against directories before deduplication.",
      "No footprint coordinates, dimensions, construction/demolition dates, or1904 occupant identities invented."
    ]
  },
  "habs_manifest": {
    "survey": "HABS IL-1015",
    "item_url": "https://www.loc.gov/item/il0118/",
    "drawing_pages": [
      {
        "sequence": 1,
        "url": "https://www.loc.gov/resource/hhh.il0118.sheet/?sp=1",
        "title": "Title sheet with neighborhood plan",
        "verification": "indexed title verified"
      },
      {
        "sequence": 2,
        "url": "https://www.loc.gov/resource/hhh.il0118.sheet/?sp=2",
        "title": null,
        "verification": "catalog count supports sequence; title not extracted"
      },
      {
        "sequence": 3,
        "url": "https://www.loc.gov/resource/hhh.il0118.sheet/?sp=3",
        "title": null,
        "verification": "catalog count supports sequence; title not extracted"
      },
      {
        "sequence": 4,
        "url": "https://www.loc.gov/resource/hhh.il0118.sheet/?sp=4",
        "title": "Section A-A",
        "verification": "indexed title verified"
      },
      {
        "sequence": 5,
        "url": "https://www.loc.gov/resource/hhh.il0118.sheet/?sp=5",
        "title": "Masonry details",
        "verification": "indexed title verified"
      },
      {
        "sequence": 6,
        "url": "https://www.loc.gov/resource/hhh.il0118.sheet/?sp=6",
        "title": "Front (east) elevation",
        "verification": "indexed title verified"
      }
    ],
    "photo_pages": [
      {
        "sequence": 1,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=1",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060903p",
        "title": "Exterior from northwest",
        "date": "1963-07-23",
        "source_id": "pa-glessner-habs-photo-01",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 2,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=2",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060904p",
        "title": "Front elevation",
        "date": "c. 1923 (copied for HABS)",
        "source_id": "pa-glessner-habs-photo-02",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 3,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=3",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060905p",
        "title": "18th Street arch",
        "date": "c. 1923 (copied for HABS)",
        "source_id": "pa-glessner-habs-photo-03",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 4,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=4",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060906p",
        "title": "Detail: gable and chimney 18th Street side",
        "date": "c. 1923 (copied for HABS)",
        "source_id": "pa-glessner-habs-photo-04",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 5,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=5",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060907p",
        "title": "Interior court",
        "date": "c. 1923 (copied for HABS)",
        "source_id": "pa-glessner-habs-photo-05",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 6,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=6",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060908p",
        "title": "First floor staircase: main hall north end",
        "date": "c. 1923 (copied for HABS)",
        "source_id": "pa-glessner-habs-photo-06",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 7,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=7",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060909p",
        "title": "First floor stairhall: south",
        "date": "c. 1923 (copied for HABS)",
        "source_id": "pa-glessner-habs-photo-07",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 8,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=8",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060910p",
        "title": "Library: west and north sides",
        "date": "c. 1923 (copied for HABS)",
        "source_id": "pa-glessner-habs-photo-08",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 9,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=9",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060911p",
        "title": "School room",
        "date": "c. 1923 (copied for HABS)",
        "source_id": "pa-glessner-habs-photo-09",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 10,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=10",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060912p",
        "title": "Dining room: west and north sides",
        "date": "c. 1923 (copied for HABS)",
        "source_id": "pa-glessner-habs-photo-10",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 11,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=11",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060913p",
        "title": "Upper hall — north and west sides",
        "date": "c. 1923 (copied for HABS)",
        "source_id": "pa-glessner-habs-photo-11",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 12,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=12",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060914p",
        "title": "Photocopy of preliminary design",
        "date": "undated preliminary design (copied for HABS)",
        "source_id": "pa-glessner-habs-photo-12",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 13,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=13",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060915p",
        "title": "North elevation — level: left stereopair",
        "date": "1965",
        "source_id": "pa-glessner-habs-photo-13",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 14,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=14",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060916p",
        "title": "North elevation — inclined: left stereopair",
        "date": "1965",
        "source_id": "pa-glessner-habs-photo-14",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 15,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=15",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060917p",
        "title": "North elevation: right stereopair",
        "date": "1965",
        "source_id": "pa-glessner-habs-photo-15",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 16,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=16",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060918p",
        "title": "East elevation — level",
        "date": "1965",
        "source_id": "pa-glessner-habs-photo-16",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      },
      {
        "sequence": 17,
        "url": "https://www.loc.gov/resource/hhh.il0118.photos/?sp=17",
        "record_url": "https://hdl.loc.gov/loc.pnp/hhh.il0118/photos.060919p",
        "title": "Northeast — angled view",
        "date": "1965",
        "source_id": "pa-glessner-habs-photo-17",
        "verification": "caption from the LOC catalog record; master TIFF acquired 2026-09-28"
      }
    ],
    "verified_photo_assets": [
      {
        "sequence": 8,
        "title": "Library west and north sides",
        "date": "circa 1923",
        "provenance": "HABS photocopy from John J. Glessner, The Story of a House",
        "record_url": "https://www.loc.gov/pictures/item/il0118.photos.060910p/",
        "jpeg_url": "https://cdn.loc.gov/service/pnp/habshaer/il/il0100/il0118/photos/060910pv.jpg",
        "tiff_url": "https://cdn.loc.gov/master/pnp/habshaer/il/il0100/il0118/photos/060910pu.tif",
        "rights": "LOC warns copied images may have restrictions; underlying 1923 historical work needs item-level assessment."
      },
      {
        "sequence": 10,
        "title": "Dining room west and north sides",
        "date": "circa 1923",
        "provenance": "HABS photocopy from John J. Glessner, The Story of a House",
        "record_url": "https://www.loc.gov/pictures/item/il0118.photos.060912p/",
        "jpeg_url": "https://cdn.loc.gov/service/pnp/habshaer/il/il0100/il0118/photos/060912pv.jpg",
        "tiff_url": "https://cdn.loc.gov/master/pnp/habshaer/il/il0100/il0118/photos/060912pu.tif",
        "rights": "LOC warns copied images may have restrictions; underlying 1923 historical work needs item-level assessment."
      },
      {
        "sequence": 1,
        "title": "Exterior from northwest",
        "date": "1963-07-23",
        "photographer": "Cervin Robinson",
        "record_url": "https://www.loc.gov/pictures/resource/hhh.il0118.photos.060903p",
        "thumbnail_url": "https://cdn.loc.gov/service/pnp/habshaer/il/il0100/il0118/photos/060903p_150px.jpg",
        "evidence_limit": "Shows post-family institutional use, not 1904."
      }
    ]
  },
  "gaps": [
    "Reconcile every frontage and rear stable against 1886 and 1911 Sanborn sheets; reconstruct 1904 using permits and intervening photos.",
    "Find all unnamed rowhouses and predecessor/successor parcels; current inventory is not every building.",
    "Transcribe 1904 directory by street address; link 1900 and 1910 census households without assuming continuity.",
    "Acquire Reid and Rees nomination PDFs and HABS for measured geometry.",
    "Adjudicate Jones, Shortall/Gregory, Field Jr., Robbins, Rees construction chronology conflicts.",
    "Verify 1904 street lighting, sidewalks, fences, poles, utilities and railroad visual context separately.",
    "Do not insert modern Clarke House, transplanted Rees site, Women’s Park or restoration-era streetscape in target scene.",
    {
      "priority": 1,
      "target": "All six HABS drawings, 17 photos, 27 data pages and caption page",
      "source": "G01",
      "action": "Retrieve originals and transcribe calibrated dimensions and photo dates."
    },
    {
      "priority": 1,
      "target": "Harvard Glessner construction drawings and details",
      "source": "G16",
      "action": "Read drawing index; acquire plans/elevations/sections/details with sheet identifiers."
    },
    {
      "priority": 1,
      "target": "Frances Glessner journals 1900–1911, especially 1904",
      "source": "G17",
      "action": "Obtain museum searchable transcripts or CHM originals; extract dated repair/redecoration/service and neighbor entries."
    },
    {
      "priority": 1,
      "target": "George Glessner labeled photographs and negatives",
      "source": "G15",
      "action": "Request inventory of dated exteriors/interiors/street views with rights and digital reproductions."
    },
    {
      "priority": 2,
      "target": "1923 Story of a House full album",
      "source": "G03",
      "action": "Acquire memoir, original plans, all Kaufmann & Fabry photographs; difference against 1888 and 1904."
    },
    {
      "priority": 2,
      "target": "Restoration files and paint/finish analyses",
      "source": "G15",
      "action": "Extract original material evidence and separate modern replacements."
    },
    {
      "priority": 2,
      "target": "HABS field notes FN-128",
      "source": "G01",
      "action": "Locate unprocessed field measurements and originals through LOC reference service."
    }
  ],
  "measurements": [
    {
      "source_file": "reid-nrhp-2003.pdf",
      "pdf_page": 4,
      "address": "2013 S. Prairie Avenue",
      "property": "lot and facade width",
      "value": 25,
      "unit": "ft",
      "note": "House spans full lot width.",
      "temporal_qualification": "2003 nomination observation; likely original envelope, confirm against 1904 map",
      "source_id": "pa-reid-nrhp-2003"
    },
    {
      "source_file": "reid-nrhp-2003.pdf",
      "pdf_page": 4,
      "address": "2013 S. Prairie Avenue",
      "property": "height form",
      "value": 3,
      "unit": "stories above raised basement",
      "note": "Three bays; granite basement, cream textured brick, limestone and terra cotta details.",
      "temporal_qualification": "2003 observation",
      "source_id": "pa-reid-nrhp-2003"
    },
    {
      "source_file": "reid-nrhp-2003.pdf",
      "pdf_page": 5,
      "address": "2013 S. Prairie Avenue",
      "property": "stair wall panel height",
      "value": 7,
      "unit": "ft approx",
      "note": "Mahogany panels.",
      "temporal_qualification": "2003 observation",
      "source_id": "pa-reid-nrhp-2003"
    },
    {
      "source_file": "reid-nrhp-2003.pdf",
      "pdf_page": 6,
      "address": "2013 S. Prairie Avenue",
      "property": "music-room dome diameter",
      "value": 7,
      "unit": "ft approx",
      "note": "Stained glass dome.",
      "temporal_qualification": "2003 observation",
      "source_id": "pa-reid-nrhp-2003"
    },
    {
      "source_file": "reid-nrhp-2003.pdf",
      "pdf_page": 8,
      "address": "2013 S. Prairie Avenue",
      "property": "main and second floor ceiling",
      "value": 10,
      "unit": "ft",
      "note": "Third-floor ballroom ceiling 12 ft.",
      "temporal_qualification": "2003 observation",
      "source_id": "pa-reid-nrhp-2003"
    },
    {
      "source_file": "reid-nrhp-2003.pdf",
      "pdf_page": 8,
      "address": "2013 S. Prairie Avenue",
      "property": "ballroom ceiling",
      "value": 12,
      "unit": "ft",
      "note": "Picture molding at 9 ft.",
      "temporal_qualification": "2003 observation",
      "source_id": "pa-reid-nrhp-2003"
    },
    {
      "source_file": "reid-nrhp-2003.pdf",
      "pdf_page": 23,
      "address": "2013 S. Prairie Avenue",
      "property": "main girder span",
      "value": 25,
      "unit": "ft",
      "note": "Steel frame; reinforced concrete floor construction described.",
      "temporal_qualification": "Nomination cites Carl Condit; verify original structural drawings",
      "source_id": "pa-reid-nrhp-2003"
    },
    {
      "source_file": "reid-nrhp-2003.pdf",
      "pdf_page": 32,
      "address": "2013 S. Prairie Avenue",
      "property": "plans",
      "value": 4,
      "unit": "floor diagrams",
      "note": "Ground, first, second, third; carriage house and rear garden shown.",
      "temporal_qualification": "Nomination-era plan; scale/dimensions must be inspected before metric extraction",
      "source_id": "pa-reid-nrhp-2003"
    },
    {
      "source_file": "reid-nrhp-2003.pdf",
      "pdf_page": 13,
      "address": "2031–2035 S. Prairie Avenue",
      "property": "rowhouse lot width",
      "value": 25,
      "unit": "ft",
      "note": "Three townhouses dated 1869 with Lemont limestone fronts.",
      "temporal_qualification": "Historic synthesis; construction claim needs period confirmation",
      "source_id": "pa-reid-nrhp-2003"
    },
    {
      "source_file": "wheeler-kohn-nrhp-1999.pdf",
      "pdf_page": 10,
      "address": "2018 S. Calumet Avenue",
      "property": "third-floor ceiling",
      "value": 11,
      "unit": "ft",
      "note": "Mansard floor has smaller rooms than second floor.",
      "temporal_qualification": "1999 observation",
      "source_id": "pa-wheeler-kohn-nrhp-1999"
    },
    {
      "source_file": "wheeler-kohn-nrhp-1999.pdf",
      "pdf_page": 10,
      "address": "2018 S. Calumet Avenue",
      "property": "basement ceiling",
      "value": 10,
      "unit": "ft",
      "note": "Kitchen and servants quarters identified.",
      "temporal_qualification": "1999 observation",
      "source_id": "pa-wheeler-kohn-nrhp-1999"
    },
    {
      "source_file": "wheeler-kohn-nrhp-1999.pdf",
      "pdf_page": 6,
      "address": "2018 S. Calumet Avenue",
      "property": "historic chimneys",
      "value": 4,
      "unit": "count",
      "note": "Only two survived at nomination.",
      "temporal_qualification": "Historic/modern distinction stated by nomination; phase-date missing",
      "source_id": "pa-wheeler-kohn-nrhp-1999"
    },
    {
      "source_file": "wheeler-kohn-nrhp-1999.pdf",
      "pdf_page": 22,
      "address": "2018 S. Calumet Avenue",
      "property": "plan",
      "value": 1,
      "unit": "sheet",
      "note": "Includes two parlors, vestibule, porch, dining room, hall and pantry.",
      "temporal_qualification": "Nomination-era surveyed layout, includes later fire stair",
      "source_id": "pa-wheeler-kohn-nrhp-1999"
    },
    {
      "source_file": "kimball-habs-data.pdf",
      "pdf_page": 2,
      "address": "1801 S. Prairie Avenue",
      "property": "height form",
      "value": 2.5,
      "unit": "stories above raised basement",
      "note": "L-shaped with attached carriage house; Bedford stone, wood frame floors/roof.",
      "temporal_qualification": "1967 survey observation",
      "source_id": "pa-kimball-habs-il1077"
    },
    {
      "source_file": "kimball-habs-data.pdf",
      "pdf_page": 3,
      "address": "1801 S. Prairie Avenue",
      "property": "roof and exterior finishes",
      "value": null,
      "unit": null,
      "note": "Black slate, copper ridges and finials, black wood sash.",
      "temporal_qualification": "1967 survey observation; verify 1904 finish evidence",
      "source_id": "pa-kimball-habs-il1077"
    },
    {
      "source_file": "kimball-habs-data.pdf",
      "pdf_page": 4,
      "address": "1801 S. Prairie Avenue",
      "property": "rear cellar tile",
      "value": "3 × 6",
      "unit": "in",
      "note": "Unglazed red tile.",
      "temporal_qualification": "1967 observed finish; original date not established",
      "source_id": "pa-kimball-habs-il1077"
    },
    {
      "source_file": "kimball-habs-data.pdf",
      "pdf_page": 4,
      "address": "1801 S. Prairie Avenue",
      "property": "parlor wainscot line",
      "value": 4.5,
      "unit": "ft approx",
      "note": "Bookcases and mantel continue at this height.",
      "temporal_qualification": "1967 survey observation",
      "source_id": "pa-kimball-habs-il1077"
    },
    {
      "source_file": "kimball-habs-data.pdf",
      "pdf_page": 5,
      "address": "1801 S. Prairie Avenue",
      "property": "north sidewalk slab",
      "value": 4,
      "unit": "ft square approx",
      "note": "Limestone blocks.",
      "temporal_qualification": "1967 survey observation; not automatically 1904",
      "source_id": "pa-kimball-habs-il1077"
    },
    {
      "source_file": "kimball-habs-data.pdf",
      "pdf_page": 5,
      "address": "1801 S. Prairie Avenue",
      "property": "iron fence height",
      "value": 6,
      "unit": "ft",
      "note": "Fence dips at curved front balcony.",
      "temporal_qualification": "1967 survey observation; do not use later chain-link parking enclosure in 1904",
      "source_id": "pa-kimball-habs-il1077"
    },
    {
      "source_file": "glessner-habs-data.pdf",
      "pdf_page": 22,
      "address": "1800 S. Prairie Avenue",
      "property": "granite facing thickness",
      "value": "6 and 8",
      "unit": "in",
      "note": "Brick backing; Wellesley granite facing with deeper returns.",
      "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
      "source_id": "pa-glessner-habs-data"
    },
    {
      "source_file": "glessner-habs-data.pdf",
      "pdf_page": 22,
      "address": "1800 S. Prairie Avenue",
      "property": "roof tile module",
      "value": "6 wide; 5 exposed",
      "unit": "in",
      "note": "Survey describes tar-covered terracotta; reconcile restoration and original specifications.",
      "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
      "source_id": "pa-glessner-habs-data"
    },
    {
      "source_file": "glessner-habs-data.pdf",
      "pdf_page": 23,
      "address": "1800 S. Prairie Avenue",
      "property": "principal oak floor strip width",
      "value": 2.25,
      "unit": "in",
      "note": "1963 architectural description.",
      "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
      "source_id": "pa-glessner-habs-data"
    },
    {
      "source_file": "glessner-habs-data.pdf",
      "pdf_page": 23,
      "address": "1800 S. Prairie Avenue",
      "property": "bathroom and service-floor tile module",
      "value": 6,
      "unit": "in square",
      "note": "Service floors alternate red/tan; bathrooms separately described.",
      "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
      "source_id": "pa-glessner-habs-data"
    },
    {
      "source_file": "glessner-habs-data.pdf",
      "pdf_page": 23,
      "address": "1800 S. Prairie Avenue",
      "property": "corridor wainscot height",
      "value": 3,
      "unit": "ft",
      "note": "Tower and wing corridors.",
      "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
      "source_id": "pa-glessner-habs-data"
    },
    {
      "source_file": "glessner-habs-data.pdf",
      "pdf_page": 23,
      "address": "1800 S. Prairie Avenue",
      "property": "bathroom tile height",
      "value": 5,
      "unit": "ft",
      "note": "Six-inch square wall tiles.",
      "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
      "source_id": "pa-glessner-habs-data"
    },
    {
      "source_file": "glessner-habs-data.pdf",
      "pdf_page": 23,
      "address": "1800 S. Prairie Avenue",
      "property": "glazed white service brick",
      "value": "2.25 × 8.25",
      "unit": "in",
      "note": "Black joints 1/8 in; kitchen/pantries/laundry/stable/harness spaces.",
      "temporal_qualification": "August 1963 HABS observation; match with 1904 phase before use",
      "source_id": "pa-glessner-habs-data"
    },
    {
      "source_file": "glessner-habs-sheet-2.tif",
      "address": "1800 S. Prairie Avenue",
      "property": "overall east-west extent",
      "value": "161 ft 3 in",
      "unit": "imperial",
      "note": "Read dimension annotation along 18th Street edge; first-floor plan, 1963.",
      "temporal_qualification": "1963/1965 measured record; assess against target1904",
      "source_id": "pa-glessner-habs-sheet-2"
    },
    {
      "source_file": "glessner-habs-sheet-2.tif",
      "address": "1800 S. Prairie Avenue",
      "property": "overall east/front north-south extent",
      "value": "74 ft 0 in",
      "unit": "imperial",
      "note": "Read dimension annotation at Prairie Avenue frontage; 1963.",
      "temporal_qualification": "1963/1965 measured record; assess against target1904",
      "source_id": "pa-glessner-habs-sheet-2"
    },
    {
      "source_file": "glessner-habs-sheet-2.tif",
      "address": "1800 S. Prairie Avenue",
      "property": "wood stair behind service wing",
      "value": 1955,
      "unit": "approximate year added",
      "note": "Sheet explicitly notes circa1955; EXCLUDE this stair from 1904.",
      "temporal_qualification": "1963/1965 measured record; assess against target1904",
      "source_id": "pa-glessner-habs-sheet-2"
    },
    {
      "source_file": "glessner-habs-sheet-2.tif",
      "address": "1800 S. Prairie Avenue",
      "property": "service stalls",
      "value": null,
      "unit": null,
      "note": "Dotted lines are PROBABLE stall partitions based on early drawings, not surveyed extant partitions.",
      "temporal_qualification": "1963/1965 measured record; assess against target1904",
      "source_id": "pa-glessner-habs-sheet-2"
    },
    {
      "source_file": "glessner-habs-sheet-3.tif",
      "address": "1800 S. Prairie Avenue",
      "property": "coachmen/hayloft partitions",
      "value": null,
      "unit": null,
      "note": "Dotted lines reconstruct probable separation from early drawings; retain inference status.",
      "temporal_qualification": "1963/1965 measured record; assess against target1904",
      "source_id": "pa-glessner-habs-sheet-3"
    },
    {
      "source_file": "glessner-habs-sheet-6.tif",
      "address": "1800 S. Prairie Avenue",
      "property": "north chimney top above door datum",
      "value": 48.62,
      "unit": "ft",
      "note": "Annotation 48.62 ±0.02. April6 1965 photogrammetry; door datum0.00.",
      "temporal_qualification": "1963/1965 measured record; assess against target1904",
      "source_id": "pa-glessner-habs-sheet-6"
    },
    {
      "source_file": "glessner-habs-sheet-6.tif",
      "address": "1800 S. Prairie Avenue",
      "property": "second-floor window soffit above door datum",
      "value": 24.3,
      "unit": "ft",
      "note": "Read drawing annotation; April6 1965 photogrammetry.",
      "temporal_qualification": "1963/1965 measured record; assess against target1904",
      "source_id": "pa-glessner-habs-sheet-6"
    },
    {
      "source_file": "glessner-habs-sheet-6.tif",
      "address": "1800 S. Prairie Avenue",
      "property": "sidewalk before door relative to door datum",
      "value": -0.74,
      "unit": "ft",
      "note": "Read drawing annotation; do not conflate with Chicago City Datum.",
      "temporal_qualification": "1963/1965 measured record; assess against target1904",
      "source_id": "pa-glessner-habs-sheet-6"
    }
  ],
  "address_crosswalk": [
    {
      "frontage_id": "frontage-20-001",
      "map_address": "1600",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1600
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-002",
      "map_address": "1604",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1604
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-003",
      "map_address": "1608",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1608
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-004",
      "map_address": "1612",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1612-1"
      ],
      "directory_candidate_addresses": [
        1612
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-005",
      "map_address": "1616",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1616
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-006",
      "map_address": "1620",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1620-1904-correction"
      ],
      "directory_candidate_addresses": [
        1620
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-007",
      "map_address": "1626",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1626
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-008",
      "map_address": "1628",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1628
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-009",
      "map_address": "1630",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1630-50"
      ],
      "directory_candidate_addresses": [],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-010",
      "map_address": "1634",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1634
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-011",
      "map_address": "1636",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1636
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-012",
      "map_address": "1638",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1638-2"
      ],
      "directory_candidate_addresses": [
        1638
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-013",
      "map_address": "1700",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1700-52"
      ],
      "directory_candidate_addresses": [
        1700
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-014",
      "map_address": "1702",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1702-43"
      ],
      "directory_candidate_addresses": [],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-015",
      "map_address": "1706",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1706-53"
      ],
      "directory_candidate_addresses": [
        1706
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-016",
      "map_address": "1708",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1708-54"
      ],
      "directory_candidate_addresses": [
        1708
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-017",
      "map_address": "1712",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1712
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-018",
      "map_address": "1720",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1720-55"
      ],
      "directory_candidate_addresses": [
        1720
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-019",
      "map_address": "1726",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1726–1728-s.-prairie-avenue-(predecessor)-51"
      ],
      "directory_candidate_addresses": [
        1726
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-020",
      "map_address": "1730",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1730
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-021",
      "map_address": "1736",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1736-49"
      ],
      "directory_candidate_addresses": [
        1736
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-022",
      "map_address": "1601",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-023",
      "map_address": "1605",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "The sheet prints 1605; transcribed 1603 until the sheet 20 census re-read it (T-1840). Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-024",
      "map_address": "1607–1611",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1611-1904-correction"
      ],
      "directory_candidate_addresses": [],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-025",
      "map_address": "1613",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-026",
      "map_address": "1615",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-027",
      "map_address": "1619",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1619
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-028",
      "map_address": "1621",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1621
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-029",
      "map_address": "1623",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-030",
      "map_address": "1625",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1625
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-031",
      "map_address": "1637",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1637-45"
      ],
      "directory_candidate_addresses": [
        1637
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-032",
      "map_address": "1701",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1701-3"
      ],
      "directory_candidate_addresses": [
        1701
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-033",
      "map_address": "1709",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1709-46",
        "pa-1709-s.-prairie-avenue-(successor)-47"
      ],
      "directory_candidate_addresses": [
        1709
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-034",
      "map_address": "1721",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1721-4"
      ],
      "directory_candidate_addresses": [
        1721
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "The sheet prints 1721; transcribed 1719 until the sheet 20 census re-read it (T-1840). The same property as the named Dexter record at 1721. Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-20-035",
      "map_address": "1729",
      "map_source_id": "MAP-1911-20",
      "candidate_building_ids": [
        "pa-1729-5"
      ],
      "directory_candidate_addresses": [
        1729
      ],
      "match_status": "candidate_by_printed_number_not_resolved_identity",
      "note": "Multi-address buildings, moved sites, predecessor phases and 1909 renumbering require evidence review."
    },
    {
      "frontage_id": "frontage-28-036",
      "map_address": "1800",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1800-22"
      ],
      "directory_candidate_addresses": [
        1800
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1800-front — front, standing (attested); s28-1800-wing — attached wing, standing (inferred)."
    },
    {
      "frontage_id": "frontage-28-037",
      "map_address": "1808",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1808-6"
      ],
      "directory_candidate_addresses": [
        1808
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1808-front — front, standing (inferred); s28-1808-wing — attached wing, standing (inferred)."
    },
    {
      "frontage_id": "frontage-28-038",
      "map_address": "1812",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1812-7"
      ],
      "directory_candidate_addresses": [
        1812
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1812-front — front, standing (inferred); s28-1812-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-039",
      "map_address": "1816",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1816-33"
      ],
      "directory_candidate_addresses": [
        1816
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1816-front — front, standing (inferred); s28-1816-wing — attached wing, standing (inferred); s28-1816-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-040",
      "map_address": "1824",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1824-8"
      ],
      "directory_candidate_addresses": [
        1824
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1824-front — front, standing (inferred); s28-1824-wing — attached wing, standing (inferred); s28-1824-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-041",
      "map_address": "1828",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        1828
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 28 census (T-1841): s28-1828-front — front, standing (reconstructed); s28-1828-wing — attached wing, standing (reconstructed); s28-1828-rear — detached service, standing as stable/coach house (reconstructed)."
    },
    {
      "frontage_id": "frontage-28-042",
      "map_address": "1834",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1834-9"
      ],
      "directory_candidate_addresses": [
        1834
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1834-front — front, standing (inferred); s28-1834-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-043",
      "map_address": "1900",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1900-25"
      ],
      "directory_candidate_addresses": [
        1900
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1900-front — front, standing (inferred); s28-1900-wing — attached wing, standing (inferred); s28-1900-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-044",
      "map_address": "1906",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1906-34"
      ],
      "directory_candidate_addresses": [
        1906
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1906-front — front, standing (inferred); s28-1906-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-045",
      "map_address": "1908",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1906-34"
      ],
      "directory_candidate_addresses": [],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1908-wing — attached wing, standing (inferred)."
    },
    {
      "frontage_id": "frontage-28-046",
      "map_address": "1912",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1912-10"
      ],
      "directory_candidate_addresses": [
        1912
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1912-front — front, standing (inferred); s28-1912-wing — attached wing, standing (inferred); s28-1912-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-047",
      "map_address": "1918 (1936)",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1936-11"
      ],
      "directory_candidate_addresses": [],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1918-front — front, standing (inferred); s28-1936-wing — attached wing, standing (inferred); s28-1936-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-048",
      "map_address": "1936",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1936-11"
      ],
      "directory_candidate_addresses": [
        1936
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1936-grounds — grounds, open grounds of the Allerton house (inferred)."
    },
    {
      "frontage_id": "frontage-28-049",
      "map_address": "1801",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1801-23"
      ],
      "directory_candidate_addresses": [
        1801
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1801-front — front, standing (inferred); s28-1801-wing — attached wing, standing (inferred)."
    },
    {
      "frontage_id": "frontage-28-050",
      "map_address": "1811",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1811-24"
      ],
      "directory_candidate_addresses": [],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1811-front — front, standing (inferred); s28-1811-wing — attached wing, standing (inferred); s28-1811-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-051",
      "map_address": "1815",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1815-12"
      ],
      "directory_candidate_addresses": [
        1815
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1815-front — front, standing (inferred); s28-1815-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-052",
      "map_address": "1823",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1823-13"
      ],
      "directory_candidate_addresses": [
        1823
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1823-front — front, standing (inferred); s28-1823-wing — attached wing, standing (inferred)."
    },
    {
      "frontage_id": "frontage-28-053",
      "map_address": "1827",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1827-14"
      ],
      "directory_candidate_addresses": [],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1827-front — front, standing (inferred); s28-1827-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-054",
      "map_address": "1901",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1901-15"
      ],
      "directory_candidate_addresses": [
        1901
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1901-front — front, standing (inferred); s28-1901-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-055",
      "map_address": "1905",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1905-16"
      ],
      "directory_candidate_addresses": [
        1905
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1905-front — front, standing (inferred); s28-1905-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-056",
      "map_address": "1919",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1919-26"
      ],
      "directory_candidate_addresses": [
        1919
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1919-front — front, standing (inferred); s28-1919-wing — attached wing, standing (inferred)."
    },
    {
      "frontage_id": "frontage-28-057",
      "map_address": "1923",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1923-35"
      ],
      "directory_candidate_addresses": [
        1923
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1923-front — front, standing (inferred); s28-1923-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-28-058",
      "map_address": "1945",
      "map_source_id": "MAP-1911-28",
      "candidate_building_ids": [
        "pa-1945-armour-corwith"
      ],
      "directory_candidate_addresses": [
        1945
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 28 census (T-1841): s28-1945-front — front, standing (inferred); s28-1945-wing — attached wing, standing (inferred); s28-1945-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-059",
      "map_address": "2000",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2000
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2000-front — front, standing (inferred); s35-2000-wing — attached wing, standing (inferred); s35-2000-rear — detached service, standing (inferred)."
    },
    {
      "frontage_id": "frontage-35-060",
      "map_address": "2010",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2010
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2010-front — front, standing (inferred); s35-2010-wing — attached wing, standing (inferred); s35-2010-rear — detached service, standing (inferred)."
    },
    {
      "frontage_id": "frontage-35-061",
      "map_address": "2018",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2018
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2018-front — front, standing (inferred); s35-2018-wing — attached wing, standing (inferred); s35-2018-rear — detached service, standing (inferred)."
    },
    {
      "frontage_id": "frontage-35-062",
      "map_address": "2026",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2026
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2026-front — front, standing (inferred); s35-2026-wing — attached wing, standing (inferred); s35-2026-rear — detached service, standing (inferred); s35-2026-ground — grounds, open ground (inferred)."
    },
    {
      "frontage_id": "frontage-35-063",
      "map_address": "2036",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2036-38"
      ],
      "directory_candidate_addresses": [
        2036
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2036-front — front, standing (inferred); s35-2036-rear — detached service, standing (inferred); s35-2036-walls — grounds, boundary walls (inferred)."
    },
    {
      "frontage_id": "frontage-35-064",
      "map_address": "2100",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2100-18"
      ],
      "directory_candidate_addresses": [],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2100-front — front, standing (inferred); s35-2100-wing — attached wing, standing (inferred); s35-2100-rear — detached service, standing (inferred); s35-2100-walls — grounds, boundary walls (inferred)."
    },
    {
      "frontage_id": "frontage-35-065",
      "map_address": "2108",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2108-40"
      ],
      "directory_candidate_addresses": [],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2108-front — front, standing (attested); s35-2108-wing — attached wing, standing (inferred); s35-2108-rear — detached service, standing (inferred)."
    },
    {
      "frontage_id": "frontage-35-066",
      "map_address": "2110",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2110-30"
      ],
      "directory_candidate_addresses": [
        2110
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2110-front — front, standing (inferred); s35-2110-wing — attached wing, standing (inferred); s35-2110-rear — detached service, standing (inferred)."
    },
    {
      "frontage_id": "frontage-35-067",
      "map_address": "2112",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2112-39"
      ],
      "directory_candidate_addresses": [
        2112
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2112-front — front, standing (inferred); s35-2112-wing — attached wing, standing (inferred); s35-2112-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-068",
      "map_address": "2120",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2120
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2120-front — front, standing (inferred); s35-2120-wing — attached wing, standing (inferred); s35-2120-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-069",
      "map_address": "2126",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2126-20"
      ],
      "directory_candidate_addresses": [
        2126
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2126-front — front, under construction on the target date (unresolved); s35-2126-wing — attached wing, under construction on the target date (reconstructed); s35-2126-rear — detached service, standing (reconstructed)."
    },
    {
      "frontage_id": "frontage-35-070",
      "map_address": "2130",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2130-42"
      ],
      "directory_candidate_addresses": [],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2130-front — front, standing (inferred); s35-2130-wing — attached wing, standing (inferred); s35-2130-rear — detached service, standing (inferred)."
    },
    {
      "frontage_id": "frontage-35-071",
      "map_address": "2140",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2140-21"
      ],
      "directory_candidate_addresses": [
        2140
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2140-front — front, standing (inferred); s35-2140-wing — attached wing, standing (inferred); s35-2140-rear — detached service, standing (inferred); s35-2140-alley — detached service, standing (inferred); s35-2140-walls — grounds, boundary walls (inferred)."
    },
    {
      "frontage_id": "frontage-35-072",
      "map_address": "2001",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2001
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2001-front — front, standing (inferred); s35-2001-wing — attached wing, standing (inferred); s35-2001-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-073",
      "map_address": "2003",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2003
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2003-front — front, standing (inferred); s35-2003-wing — attached wing, standing (inferred)."
    },
    {
      "frontage_id": "frontage-35-074",
      "map_address": "2005",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2005
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2005-front — front, standing (inferred); s35-2005-wing — attached wing, standing (inferred); s35-2005-walls — grounds, boundary walls (inferred)."
    },
    {
      "frontage_id": "frontage-35-075",
      "map_address": "2009",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2009-17"
      ],
      "directory_candidate_addresses": [
        2009
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2009-front — front, standing (inferred); s35-2009-wing — attached wing, standing (inferred); s35-2009-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-076",
      "map_address": "2011",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2011
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2011-front — front, standing (inferred); s35-2011-wing — attached wing, standing (inferred); s35-2011-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-077",
      "map_address": "2013",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2013-29"
      ],
      "directory_candidate_addresses": [
        2013
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2013-front — front, standing (inferred); s35-2013-wing — attached wing, standing (inferred); s35-2013-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-078",
      "map_address": "2017",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2017
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2017-front — front, standing (inferred); s35-2017-wing — attached wing, standing (inferred); s35-2017-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-079",
      "map_address": "2021",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2021-36"
      ],
      "directory_candidate_addresses": [
        2021
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2021-front — front, standing (inferred); s35-2021-wing — attached wing, standing (inferred); s35-2021-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-080",
      "map_address": "2027",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2027-37"
      ],
      "directory_candidate_addresses": [
        2027
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2027-front — front, standing (inferred); s35-2027-wing — attached wing, standing (inferred); s35-2027-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-081",
      "map_address": "2031",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2031-nrhp"
      ],
      "directory_candidate_addresses": [
        2031
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2031-front — front, standing (inferred); s35-2031-wing — attached wing, standing (inferred); s35-2031-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-082",
      "map_address": "2033",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2033-nrhp"
      ],
      "directory_candidate_addresses": [
        2033
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2033-front — front, standing (attested); s35-2033-wing — attached wing, standing (inferred); s35-2033-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-083",
      "map_address": "2035",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2035-nrhp"
      ],
      "directory_candidate_addresses": [
        2035
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2035-front — front, standing (attested); s35-2035-rear — detached service, standing (inferred)."
    },
    {
      "frontage_id": "frontage-35-084",
      "map_address": "2101",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2101
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2101-front — front, standing (inferred); s35-2101-wing — attached wing, standing (inferred); s35-2101-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-085",
      "map_address": "2109",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2109-41"
      ],
      "directory_candidate_addresses": [
        2109
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2109-front — front, standing (inferred); s35-2109-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-086",
      "map_address": "2115",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [
        "pa-2115-19"
      ],
      "directory_candidate_addresses": [
        2115
      ],
      "match_status": "resolved_by_sheet_census",
      "note": "Sheet 35 census (T-1842): s35-2115-front — front, standing (inferred); s35-2115-wing — attached wing, standing (inferred); s35-2115-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-087",
      "map_address": "2123",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [
        2123
      ],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2123-front — front, standing (inferred); s35-2123-wing — attached wing, standing (inferred); s35-2123-rear — detached service, standing as stable/coach house (inferred)."
    },
    {
      "frontage_id": "frontage-35-088",
      "map_address": "2125",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2125-front — front, standing (inferred); s35-2125-wing — attached wing, standing (inferred); s35-2125-rear — detached service, standing (inferred)."
    },
    {
      "frontage_id": "frontage-35-089",
      "map_address": "2127",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2127-front — front, standing (inferred); s35-2127-wing — attached wing, standing (inferred)."
    },
    {
      "frontage_id": "frontage-35-090",
      "map_address": "2129",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): the second number of 2127 Prairie's building; its polygons are on that row."
    },
    {
      "frontage_id": "frontage-35-091",
      "map_address": "2141",
      "map_source_id": "MAP-1911-35",
      "candidate_building_ids": [],
      "directory_candidate_addresses": [],
      "match_status": "map_only_no_named_record",
      "note": "Sheet 35 census (T-1842): s35-2141-ground — grounds, open ground (inferred)."
    }
  ]
}