{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01788_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chester, Illinois | 1893 | 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":"16"},{"label":"placed","value":"4"},{"label":"unplaced","value":"12"},{"label":"fit sources","value":"georef 4"},{"label":"key map","value":"none"},{"label":"split sheets","value":"5 sheet(s) cut into 16 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 37.90770,-89.82566 +/-824m); p1__2 (tier 4, 37.90770,-89.82566 +/-824m); p1__3 (tier 1, 37.90090,-89.82400 +/-110m); p1__4 (tier 4, 37.90770,-89.82566 +/-824m); p1__5 (tier 4, 37.90770,-89.82566 +/-824m); p2__3 (tier 4, 37.90770,-89.82566 +/-824m); p3__2 (tier 4, 37.90770,-89.82566 +/-824m); p4__1 (tier 4, 37.90770,-89.82566 +/-824m); p4__3 (tier 4, 37.90770,-89.82566 +/-824m); p4__4 (tier 4, 37.90770,-89.82566 +/-824m); p5__1 (tier 4, 37.90770,-89.82566 +/-824m); p5__2 (tier 4, 37.90770,-89.82566 +/-824m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chester, Illinois | 1893 | sanborn01788_002 p2 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.63"},{"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":"2778.4"},{"label":"split_canvas_h","value":"4896.0"}],"created":"2026-10-19T16:49:50Z","modified":"2026-10-19T16:49:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"23.8,112.4 27.8,113.0 76.7,350.4 21.8,631.9 60.2,1185.5 667.8,1152.1 673.3,147.0 657.2,147.0 656.8,87.0 122.9,78.0 123.0,90.8 23.8,112.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[385.8,265.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.823414,37.912108]}},{"type":"Feature","properties":{"resourceCoords":[122.9,78.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.823547,37.912722]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chester, Illinois | 1893 | sanborn01788_002 p2 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.50"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"1327.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5124.4"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T16:49:50Z","modified":"2026-10-19T16:49:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1042.0,1858.1 1041.8,1845.5 1570.7,1852.6 1571.3,1912.0 1587.3,1912.0 1590.9,126.9 1546.8,73.1 768.9,40.0 715.1,84.1 697.1,1151.4 694.6,1156.0 694.6,1156.4 686.7,1157.2 374.2,1191.1 453.4,1739.3 502.4,1807.8 943.8,1879.9 1042.0,1858.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1031.4,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.820427,37.915205]}},{"type":"Feature","properties":{"resourceCoords":[1303.2,1849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.8230971,37.9123563]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chester, Illinois | 1893 | sanborn01788_002 p3 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.52"},{"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":"2026-10-19T16:49:50Z","modified":"2026-10-19T16:49:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"691.1,1814.4 1497.1,1840.9 1491.0,1747.5 1169.5,1536.1 1124.8,1270.5 1067.7,1272.8 1001.6,679.8 1024.8,173.8 698.5,65.7 545.8,126.0 424.2,68.7 180.8,73.1 81.2,213.4 34.6,780.5 57.9,1630.2 108.8,1761.9 518.1,1863.4 691.1,1814.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[270.0,1300.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.828659,37.904403]}},{"type":"Feature","properties":{"resourceCoords":[270.0,1614.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.829154,37.903975]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chester, Illinois | 1893 | sanborn01788_002 p4 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.32"},{"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":"4477.6"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T16:49:50Z","modified":"2026-10-19T16:49:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"191.4,1756.8 1037.7,1759.1 1077.5,1175.8 1058.0,890.0 1050.7,890.0 1050.4,890.0 1050.0,890.0 1050.0,771.3 1015.4,261.1 973.5,131.5 640.5,115.4 488.9,48.9 395.3,86.8 339.0,705.4 321.6,719.9 320.0,734.0 304.6,734.1 238.8,789.2 126.7,765.0 93.2,846.0 59.5,1403.8 191.4,1756.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881893:01788_1893-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[831.3,777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.829108,37.901449]}},{"type":"Feature","properties":{"resourceCoords":[831.3,1277.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.828247,37.900813]}}]}}]}