{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01802_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Collinsville, Illinois | 1915 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"37"},{"label":"placed","value":"17"},{"label":"unplaced","value":"20"},{"label":"fit sources","value":"georef-snap 9, georef 8"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"10 sheet(s) cut into 31 panels"},{"label":"unplaced pages","value":"p11__1 (tier 1, 38.66757,-89.98088 +/-122m); p12__2 (tier 1, 38.66968,-89.98182 +/-166m); p12__4 (tier 1, 38.66741,-89.98042 +/-100m); p12__5 (tier 1, 38.67032,-89.98120 +/-100m); p13__2 (tier 1, 38.67164,-89.98016 +/-100m); p14__2 (tier 1, 38.66143,-89.98315 +/-110m); p14__4 (tier 1, 38.66176,-89.98290 +/-109m); p15__1 (tier 1, 38.67583,-89.98784 +/-113m); p15__3 (tier 1, 38.67599,-89.98780 +/-100m); p15__4 (tier 2, 38.67543,-89.98814 +/-100m); p15__5 (tier 2, 38.67543,-89.98814 +/-100m); p15__6 (tier 1, 38.67548,-89.98863 +/-100m); p15__7 (tier 1, 38.67664,-89.98756 +/-193m); p16__1 (tier 3, 38.67448,-89.97431 +/-551m); p16__2 (tier 1, 38.67422,-89.97432 +/-100m); p16__3 (tier 1, 38.67378,-89.97395 +/-100m); p1__1 (tier 1, 38.67847,-89.97451 +/-133m); p5__1 (tier 1, 38.66700,-89.99433 +/-100m); p6__2 (tier 1, 38.66815,-89.98880 +/-100m); p9__3 (tier 1, 38.68147,-89.98148 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p10","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"651.2,28.5 657.6,43.5 771.0,320.0 1165.1,146.4 1353.1,65.5 1490.8,8.2 1612.0,334.3 1612.0,336.8 1595.8,333.9 1572.9,1814.6 1507.3,1888.9 1123.5,1811.5 836.9,1880.5 48.3,1843.7 27.7,1210.4 93.1,333.2 18.2,333.9 651.2,28.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[784.0,880.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.988138,38.667165]}},{"type":"Feature","properties":{"resourceCoords":[118.0,1512.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.989714,38.666019]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0011__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p11 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"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":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0011__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"66.0,55.0 63.8,201.2 57.4,447.9 52.1,568.9 91.8,796.9 382.5,806.0 407.3,806.0 407.3,806.8 409.3,806.9 456.2,1101.5 424.6,1488.2 461.3,1549.0 471.5,1549.0 471.5,1565.9 539.5,1678.5 544.5,1814.0 618.5,1861.3 1486.7,1886.5 1572.7,1758.5 1609.8,1781.2 1565.2,72.8 1534.5,72.3 1227.5,66.9 655.3,62.2 66.0,55.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0011__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1161.0,1056.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.982242,38.668099]}},{"type":"Feature","properties":{"resourceCoords":[66.0,55.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.9855934,38.6690165]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0012__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p12 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"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":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0012__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"57.7,1802.0 187.2,1885.0 435.6,1861.9 494.0,1785.0 509.4,1586.6 507.9,1406.3 523.7,1401.7 944.6,1400.7 945.3,1404.0 951.2,1404.0 951.5,1434.8 993.5,1644.8 1237.3,1667.2 1297.0,1489.0 1297.0,1485.2 1297.0,1433.2 1315.7,1433.1 1399.0,1184.5 549.4,762.6 549.2,754.9 546.5,753.7 546.5,619.5 539.8,290.2 803.1,234.1 844.6,160.4 689.0,128.5 680.5,95.5 609.3,103.2 253.7,96.7 46.3,88.8 57.7,1802.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0012__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[52.0,1398.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.98098057895277,38.6678640555825]}},{"type":"Feature","properties":{"resourceCoords":[52.0,90.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.98226223629565,38.67008788738473]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0012__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p12 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.90"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2031.6"},{"label":"split_canvas_y","value":"5616.0"},{"label":"split_canvas_w","value":"1788.8"},{"label":"split_canvas_h","value":"2036.0"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0012__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"681.6,1471.6 521.5,1472.4 510.8,1781.7 510.9,1812.5 511.1,1846.3 535.4,1903.1 892.9,1905.5 911.4,1912.0 914.2,1775.8 912.2,1474.0 681.6,1471.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0012__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[507.9,1404.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.9865515204826,38.66885795041335]}},{"type":"Feature","properties":{"resourceCoords":[955.1,1404.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.98556019177089,38.669166839734935]}},{"type":"Feature","properties":{"resourceCoords":[955.1,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.9851097876698,38.66828923737982]}},{"type":"Feature","properties":{"resourceCoords":[507.9,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.98610111638152,38.66798034805823]}},{"type":"Feature","properties":{"resourceCoords":[912.2,1474.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.9855934,38.6690165]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0013__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p13 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"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":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0013__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"41.1,291.4 50.5,570.8 51.1,570.8 70.2,853.2 83.0,856.8 68.1,1912.0 125.5,1912.0 163.2,1912.0 206.0,1893.9 524.3,1754.5 863.5,1819.1 903.0,1912.0 903.2,1912.0 896.5,1884.8 1297.3,1857.3 1362.5,1816.3 1530.3,1821.3 1544.3,1522.0 1598.8,1240.3 1588.1,733.5 1545.2,537.1 1477.9,417.6 1146.2,336.0 1144.5,335.8 1144.5,335.6 1141.2,334.8 1117.4,196.5 1134.5,116.0 1047.9,8.3 1047.6,7.9 1038.7,19.3 920.6,20.1 906.0,8.7 827.7,20.5 770.8,21.0 738.6,1.0 712.0,1.0 698.5,18.2 686.2,13.8 669.8,1.0 638.4,1.0 637.1,17.2 68.3,28.7 32.3,62.0 35.5,291.4 38.3,291.4 41.1,291.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0013__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1305.0,1280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.978838964222,38.67406312977082]}},{"type":"Feature","properties":{"resourceCoords":[55.0,-22.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.98467456974336,38.678942516412974]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0014__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p14 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.13"},{"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":"3299.2"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0014__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"742.8,948.9 743.0,949.0 743.0,948.9 762.6,953.2 793.4,364.8 719.0,103.9 470.0,38.2 133.1,139.6 76.5,227.5 46.6,428.8 149.4,776.2 37.5,1372.6 137.3,1512.8 137.3,1773.7 670.9,1782.8 729.1,1593.4 742.8,1331.2 742.8,948.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0014__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[255.9,744.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.96928254202236,38.6761142000198]}},{"type":"Feature","properties":{"resourceCoords":[536.9,303.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.96807406766077,38.676186393954744]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0014__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p14 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.03"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3268.0"},{"label":"split_canvas_y","value":"2132.0"},{"label":"split_canvas_w","value":"3184.0"},{"label":"split_canvas_h","value":"5520.0"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0014__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1226.1,1723.4 1494.6,1886.0 1560.8,1815.9 1587.4,1150.0 1560.0,597.7 1506.2,558.0 1349.9,588.8 1224.5,775.7 1032.0,806.9 996.4,938.4 1025.0,1008.3 1098.9,1026.8 1125.6,1041.0 1243.6,1267.4 1226.1,1723.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0014__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1379.0,1373.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.97957731905475,38.665345697908606]}},{"type":"Feature","properties":{"resourceCoords":[1000.0,1120.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.98010413629684,38.666245514564814]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0015__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p15 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.72"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3728.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1305.6"},{"label":"split_canvas_h","value":"2164.0"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0015__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"948.3,377.1 997.9,518.0 1218.5,527.0 1241.0,452.2 1257.5,521.2 1257.5,516.9 1220.6,53.7 992.0,53.3 948.3,377.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0015__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[932.1,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.988926065066,38.67592246813192]}},{"type":"Feature","properties":{"resourceCoords":[1258.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.9881566547048,38.67586728995355]}},{"type":"Feature","properties":{"resourceCoords":[1258.5,541.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.98827312375033,38.67486342751904]}},{"type":"Feature","properties":{"resourceCoords":[932.1,541.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.98904253411153,38.674918605697414]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1483.5,44.2 50.7,55.8 49.6,145.3 84.9,677.9 44.9,1090.7 38.9,1090.2 36.4,1566.1 57.0,1691.2 58.2,1850.4 36.2,1852.3 36.2,1865.6 393.3,1872.7 393.3,1864.2 963.3,1862.5 963.4,1866.2 1556.0,1868.8 1570.8,1122.2 1545.5,1115.0 1511.1,554.4 1494.3,1.0 1483.2,1.0 1483.5,44.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[394.0,1080.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.98740936663005,38.675787671015684]}},{"type":"Feature","properties":{"resourceCoords":[970.0,38.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.98601380684106,38.677721379905535]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1605.7,341.6 1612.0,386.0 1581.3,399.2 1460.7,451.0 1553.0,1051.1 1582.1,1038.8 1612.0,1206.9 1612.0,1459.9 1591.2,1459.2 1562.6,1878.4 211.4,1875.3 78.0,1811.8 61.9,1650.9 75.3,1650.8 78.5,1288.4 69.9,1288.5 61.5,710.2 65.2,710.1 61.1,108.7 1429.8,120.4 1429.7,106.4 1507.5,117.0 1509.2,121.1 1548.8,211.3 1605.7,341.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1488.0,120.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.98474184638665,38.671678825826476]}},{"type":"Feature","properties":{"resourceCoords":[1865.0,934.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.98667440835136,38.671015383741356]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1546.0,611.7 1545.4,1477.2 1612.0,1630.8 1612.0,1718.2 1597.0,1714.3 1553.9,1875.0 65.7,1889.0 79.5,87.1 268.9,35.2 1139.3,25.1 1315.5,27.6 1501.9,58.8 1487.6,117.2 1543.5,147.4 1546.0,611.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[767.0,614.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.99814499296511,38.667859212492495]}},{"type":"Feature","properties":{"resourceCoords":[1541.0,1242.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.99631861128742,38.666691441798875]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0005__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p5 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.94"},{"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":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0005__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1364.0,52.1 1314.2,53.1 1269.3,75.0 437.9,73.4 437.8,76.3 1.0,128.6 1.0,158.1 45.6,165.8 34.6,1365.1 12.6,1382.4 441.6,1565.6 1239.3,1912.0 1423.6,1912.0 1515.3,1912.0 1567.0,1845.6 1547.2,681.0 1471.2,616.6 1419.1,347.1 1513.3,108.4 1410.9,51.4 1365.0,52.1 1365.2,26.0 1364.3,25.5 1364.0,52.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0005__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1031.0,1140.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.994831,38.667168]}},{"type":"Feature","properties":{"resourceCoords":[1031.0,74.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.992521,38.66794]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p6 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.94"},{"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":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1582.4,746.0 1549.7,47.2 1320.9,47.6 678.5,47.7 452.4,45.7 421.9,405.8 418.3,405.9 418.3,410.0 362.6,410.0 286.8,410.0 84.1,416.4 49.2,481.2 101.6,852.2 19.1,1548.2 42.0,1875.3 249.1,1909.2 248.8,1880.0 686.0,1822.8 686.0,1820.0 1517.6,1812.4 1562.2,1790.0 1612.0,1788.5 1612.0,1761.8 1574.0,1741.3 1552.0,819.3 1582.4,746.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[686.0,1820.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.99307,38.668944]}},{"type":"Feature","properties":{"resourceCoords":[1268.0,48.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.988687,38.669205]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p7","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"26"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1254.2,1826.0 1550.5,1830.1 1545.4,1402.9 1544.8,1199.8 1547.5,890.2 1553.1,657.5 1554.5,60.9 1260.5,60.4 1147.8,53.5 960.4,28.3 960.1,69.7 378.0,60.5 378.0,64.0 332.8,63.7 202.1,62.8 46.5,646.7 78.0,647.1 36.8,817.8 1.0,899.4 1.0,1073.3 50.5,1096.8 46.2,1735.9 144.1,1824.3 369.5,1826.4 1009.8,1826.3 1254.2,1826.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[956.0,1236.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.987398,38.669625]}},{"type":"Feature","properties":{"resourceCoords":[378.0,64.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.9853627,38.6714401]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p8","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"229.7,1863.1 228.6,1863.1 240.3,1836.0 240.3,1820.6 239.8,1680.8 239.4,1579.7 173.4,1539.8 239.9,1383.7 240.1,1286.6 233.6,599.1 614.3,31.8 816.0,32.0 850.1,31.5 1307.0,75.6 1444.3,147.1 1417.8,303.2 1385.2,312.8 1395.3,383.5 1400.8,738.2 1399.7,975.9 1398.7,1282.8 1402.2,1854.8 1111.9,1855.7 1000.5,1849.3 815.4,1825.3 815.3,1866.2 240.4,1859.6 229.7,1863.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[816.0,1280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.983548,38.670858]}},{"type":"Feature","properties":{"resourceCoords":[816.0,32.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.980783,38.671743]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0009__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p9 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"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":"3822.0"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0009__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"941.1,954.5 1058.2,954.5 1081.2,947.1 1081.3,901.5 1118.9,872.2 1196.9,864.0 1285.0,794.7 1285.0,794.5 1285.0,794.4 1285.0,792.7 1392.6,681.1 1394.3,681.1 1429.1,681.1 1612.0,537.1 1612.0,508.6 1594.1,504.4 1586.1,114.8 1512.0,45.2 116.9,28.5 37.1,55.4 21.4,150.8 64.3,917.6 940.5,953.5 941.1,954.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0009__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[341.0,756.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.982731,38.679907]}},{"type":"Feature","properties":{"resourceCoords":[1086.0,224.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.980535,38.679813]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0009__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Collinsville, Illinois | 1915 | sanborn01802_004 p9 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.69"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2726.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4926.0"}],"created":"2026-10-19T14:53:59Z","modified":"2026-10-19T14:53:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0009__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1592.3,1605.6 1571.7,734.3 1382.8,707.2 1285.1,799.6 1284.4,824.6 1282.5,927.8 1282.0,955.5 1280.8,955.5 1280.7,960.5 386.7,994.5 374.0,1455.0 331.8,1460.7 331.6,1488.7 331.5,1494.0 84.5,1494.0 58.1,1497.5 54.9,1877.9 1510.8,1910.6 1592.3,1605.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g018021915:01802_1915-0009__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[597.0,1796.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.99852809927306,38.6630282095539]}},{"type":"Feature","properties":{"resourceCoords":[890.0,1485.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.99785671163563,38.663616240943334]}}]}}]}