{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01783_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chatsworth, Illinois | 1911 | mapsnap generated fit (2026-10-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-22"},{"label":"run","value":"corpus-v2.1"},{"label":"pages","value":"9"},{"label":"placed","value":"6"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 3, georef-snap 3"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 40.75478,-88.29197 +/-452m); p1__3 (tier 4, 40.75478,-88.29197 +/-452m); p4__2 (tier 1, 40.75425,-88.28875 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chatsworth, Illinois | 1911 | sanborn01783_004 p1 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.97"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3898.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-22T13:34:45Z","modified":"2026-10-22T13:34:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"895.0,1590.0 898.2,738.7 896.3,455.9 897.6,243.5 885.1,120.8 711.7,31.3 122.2,67.7 91.0,241.9 39.2,314.1 56.3,692.6 142.8,751.9 124.4,1064.5 35.8,1172.6 56.4,1856.8 1.0,1861.2 1.0,1880.1 200.8,1881.4 896.5,1880.0 895.0,1590.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[201.9,736.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.2938301,40.7569345]}},{"type":"Feature","properties":{"resourceCoords":[896.5,1880.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.2920944,40.7548295]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0001__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chatsworth, Illinois | 1911 | sanborn01783_004 p1 [4]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.47"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3898.0"},{"label":"split_canvas_y","value":"5232.4"},{"label":"split_canvas_w","value":"2554.0"},{"label":"split_canvas_h","value":"2419.6"}],"created":"2026-10-22T13:34:45Z","modified":"2026-10-22T13:34:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0001__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"995.6,1323.2 974.5,1896.1 1574.9,1912.0 1589.7,1912.0 1590.4,1324.2 995.6,1323.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0001__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1411.2,1882.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.29040224401261,40.758050876128145]}},{"type":"Feature","properties":{"resourceCoords":[1411.2,1340.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.29046957843852,40.759082433755644]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chatsworth, Illinois | 1911 | sanborn01783_004 p2 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.80"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"6260.0"},{"label":"split_canvas_w","value":"1298.0"},{"label":"split_canvas_h","value":"1392.0"}],"created":"2026-10-22T13:34:45Z","modified":"2026-10-22T13:34:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"236.5,1565.0 55.2,1565.0 54.9,1582.0 2.0,1568.4 1.0,1822.6 1.0,1909.4 312.4,1899.9 303.9,1594.9 236.5,1565.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1565.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.29435265807943,40.75138984683533]}},{"type":"Feature","properties":{"resourceCoords":[324.5,1565.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.29355855091312,40.75131550311245]}},{"type":"Feature","properties":{"resourceCoords":[324.5,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.29366364332043,40.75067141713202]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-88.29445775048674,40.7507457608549]}},{"type":"Feature","properties":{"resourceCoords":[284.6,1873.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.2937493,40.7507546]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chatsworth, Illinois | 1911 | sanborn01783_004 p2 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-22T13:34:45Z","modified":"2026-10-22T13:34:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"656.2,27.7 79.7,71.3 40.9,615.1 94.7,910.4 70.2,1476.5 157.2,1558.9 257.1,1565.0 319.5,1565.0 319.6,1568.8 326.2,1569.2 373.0,1842.2 659.2,1884.0 654.7,1912.0 843.6,1912.0 850.6,1879.9 1565.8,1880.5 1567.1,1674.3 1560.4,1104.7 1559.6,862.1 1563.1,51.0 859.3,49.0 656.1,46.7 656.2,27.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[867.0,1100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.29373551438121,40.75288417072015]}},{"type":"Feature","properties":{"resourceCoords":[1555.0,62.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.29211350906701,40.75480896375093]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chatsworth, Illinois | 1911 | sanborn01783_004 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-22T13:34:45Z","modified":"2026-10-22T13:34:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"38.5,1654.4 29.2,1091.0 27.3,851.0 26.9,48.7 715.3,47.8 1340.3,50.1 1529.1,54.5 1585.9,753.8 1513.7,1298.7 1550.5,1852.2 38.2,1858.3 38.5,1654.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1349.0,1092.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.28882737489347,40.75292589751838]}},{"type":"Feature","properties":{"resourceCoords":[725.0,54.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.29038585436864,40.754835749889956]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chatsworth, Illinois | 1911 | sanborn01783_004 p4 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-22T13:34:45Z","modified":"2026-10-22T13:34:45Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"438.3,1853.2 1280.2,1858.0 1567.0,1857.0 1567.3,1176.3 1570.8,558.3 1573.4,245.3 1571.7,141.3 1371.7,37.8 292.4,29.5 263.9,518.4 258.0,518.5 258.0,520.0 205.2,520.0 91.1,523.1 60.8,630.6 79.5,1839.8 1.0,1853.1 1.0,1853.2 158.7,1854.6 438.3,1853.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017831911:01783_1911-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1002.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.2921144,40.7558887]}},{"type":"Feature","properties":{"resourceCoords":[1567.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.2920944,40.7548295]}}]}}]}