{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01788_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chester, Illinois | 1899 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"22"},{"label":"placed","value":"8"},{"label":"unplaced","value":"14"},{"label":"fit sources","value":"georef 4, snap:0 2, georef-snap 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 16 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 37.90476,-89.83315 +/-102m); p1__2 (tier 1, 37.90451,-89.83105 +/-245m); p1__3 (tier 1, 37.90258,-89.83123 +/-122m); p1__4 (tier 3, 37.90056,-89.82709 +/-869m); p3__1 (tier 1, 37.91280,-89.82408 +/-259m); p4__1 (tier 1, 37.91134,-89.82163 +/-100m); p4__4 (tier 3, 37.91130,-89.82074 +/-869m); p5__2 (tier 2, 37.90605,-89.82680 +/-100m); p6__2 (tier 1, 37.90458,-89.82822 +/-100m); p7__1 (tier 1, 37.90293,-89.82716 +/-219m); p7__3 (tier 1, 37.89533,-89.82034 +/-100m); p7__4 (tier 3, 37.89738,-89.82159 +/-869m); p8__2 (tier 1, 37.90152,-89.82868 +/-200m); p9 (tier 4, 37.90730,-89.82495 +/-935m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chester, Illinois | 1899 | sanborn01788_003 p2","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T23:31:08Z","modified":"2026-10-18T23:31:08Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1526.7,1912.0 1525.2,1880.3 102.8,1852.0 150.4,1817.5 138.2,1793.2 87.3,1765.0 46.1,1601.4 74.2,46.0 565.3,14.5 944.0,85.5 1573.2,28.2 1591.5,1782.3 1575.0,1782.5 1574.6,1905.4 1526.7,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1009.0,1277.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.8213617,37.914458]}},{"type":"Feature","properties":{"resourceCoords":[1009.0,154.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.819482,37.915936]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0003__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 | 1899 | sanborn01788_003 p3 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.01"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2118.0"},{"label":"split_canvas_w","value":"2712.4"},{"label":"split_canvas_h","value":"3663.2"}],"created":"2026-10-18T23:31:08Z","modified":"2026-10-18T23:31:08Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"57.0,1280.3 50.4,1304.2 5.8,1339.8 259.1,1417.8 415.0,1428.0 539.9,1379.3 630.1,1339.3 664.3,1324.3 664.0,1321.3 657.2,1276.7 553.8,690.2 475.5,590.3 261.3,539.6 20.9,561.8 30.5,927.3 76.5,1003.5 27.0,1263.3 57.0,1280.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[630.1,1339.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.827093,37.906762]}},{"type":"Feature","properties":{"resourceCoords":[173.0,1522.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.8274,37.905743]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0004__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 | 1899 | sanborn01788_003 p4 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"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":"2026-10-18T23:31:08Z","modified":"2026-10-18T23:31:08Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"62.6,1369.5 72.9,1369.8 72.9,1457.5 89.5,1600.1 645.2,1630.3 647.9,1633.8 649.0,1633.8 649.0,1635.3 806.6,1845.9 1576.8,1857.5 1562.2,577.0 1516.8,510.3 1190.3,507.6 1198.0,459.1 1198.0,265.0 1198.0,265.0 1228.7,265.0 1260.4,64.4 801.5,40.1 736.0,481.1 736.0,482.4 736.2,501.8 736.2,504.0 736.3,513.0 736.2,513.0 475.8,552.5 103.8,513.0 87.2,513.0 85.7,635.6 37.9,641.6 37.9,642.6 85.6,643.1 84.9,693.7 80.1,1038.5 72.9,1264.6 72.9,1368.5 62.5,1368.2 62.6,1369.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1004.0,1519.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.821386,37.910502]}},{"type":"Feature","properties":{"resourceCoords":[475.0,576.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.820713,37.912453]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0004__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chester, Illinois | 1899 | sanborn01788_003 p4 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.07"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4792.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1660.0"},{"label":"split_canvas_h","value":"2028.0"}],"created":"2026-10-18T23:31:08Z","modified":"2026-10-18T23:31:08Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0004__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1314.8,506.0 1319.2,506.0 1317.8,428.1 1320.1,258.5 1319.0,1.0 1296.0,1.0 1296.0,187.8 1300.1,259.2 1296.0,260.0 1296.0,265.0 1271.0,265.0 1216.2,275.9 1214.0,440.4 1310.1,496.1 1311.5,506.0 1314.8,506.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0004__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1198.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82183373579718,37.91302447993852]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82092172504683,37.91228010660586]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,507.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.8220662898,37.91139484807369]}},{"type":"Feature","properties":{"resourceCoords":[1198.0,507.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82297830055036,37.91213922140635]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0005__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 | 1899 | sanborn01788_003 p5 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.73"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2238.0"},{"label":"split_canvas_w","value":"3434.0"},{"label":"split_canvas_h","value":"5414.0"}],"created":"2026-10-18T23:31:08Z","modified":"2026-10-18T23:31:08Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"766.6,1900.6 757.5,1865.3 838.6,1477.8 812.1,789.0 652.0,605.7 54.4,624.8 89.7,1316.8 143.8,1330.3 152.1,1485.8 153.2,1639.0 78.5,1801.6 153.8,1705.6 153.6,1686.4 766.6,1900.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,559.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82694946224633,37.90829696705947]}},{"type":"Feature","properties":{"resourceCoords":[858.5,559.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82500074600695,37.90789868080753]}},{"type":"Feature","properties":{"resourceCoords":[858.5,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82579086456197,37.90545804678981]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82773958080135,37.905856333041754]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0006__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 | 1899 | sanborn01788_003 p6 [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":"2026-10-18T23:31:08Z","modified":"2026-10-18T23:31:08Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1324.9,1036.8 1287.0,1037.0 1287.0,986.1 1226.6,905.7 1256.7,688.0 1408.1,559.0 1507.2,557.9 1473.2,499.1 1558.8,200.5 1150.6,115.5 846.7,154.7 792.0,95.2 142.7,194.7 152.1,211.8 79.0,637.0 85.9,643.7 38.5,1517.3 153.4,1881.8 1025.9,1830.1 1477.0,1885.7 1577.6,1603.3 1478.5,1234.3 1507.8,1157.3 1404.2,1142.5 1324.9,1036.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[276.0,427.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82739560009759,37.90571505810816]}},{"type":"Feature","properties":{"resourceCoords":[125.0,1625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82953548314826,37.904286204762975]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0007__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 | 1899 | sanborn01788_003 p7 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.45"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2341.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4110.8"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T23:31:08Z","modified":"2026-10-18T23:31:08Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0007__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"943.4,1798.6 1049.8,1871.0 1521.6,1850.5 1587.7,999.2 1500.3,617.4 1316.3,461.4 1190.8,456.5 1190.8,452.2 1190.8,444.9 1110.4,80.5 857.4,47.5 711.8,113.8 651.0,869.0 686.7,1010.0 858.6,1174.6 943.4,1798.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0007__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[585.3,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82688175680599,37.900977643418614]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82553281248416,37.90248816671663]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82199545407619,37.90049342762793]}},{"type":"Feature","properties":{"resourceCoords":[585.3,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82334439839802,37.89898290432991]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0008__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 | 1899 | sanborn01788_003 p8 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.77"},{"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":"4446.8"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-18T23:31:08Z","modified":"2026-10-18T23:31:08Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1002.1,1778.8 1065.1,1709.9 1016.5,264.4 966.0,105.7 596.5,98.6 512.7,29.9 314.9,38.6 184.2,160.9 155.0,433.6 77.0,496.9 44.6,1478.6 69.6,1641.6 301.2,1836.7 1002.1,1778.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881899:01788_1899-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[825.8,1278.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.828247,37.900813]}},{"type":"Feature","properties":{"resourceCoords":[825.8,784.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.829108,37.901449]}}]}}]}