{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01788_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chester, Illinois | 1906 | 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":"20"},{"label":"placed","value":"9"},{"label":"unplaced","value":"11"},{"label":"fit sources","value":"georef-snap 6, georef 2, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"7 sheet(s) cut into 15 panels"},{"label":"unplaced pages","value":"p10 (tier 4, 37.90730,-89.82485 +/-929m); p1__1 (tier 1, 37.90444,-89.83310 +/-101m); p1__2 (tier 1, 37.90429,-89.83106 +/-252m); p1__3 (tier 1, 37.90351,-89.83336 +/-152m); p4__3 (tier 2, 37.91280,-89.82151 +/-100m); p5__1 (tier 1, 37.90661,-89.82474 +/-167m); p5__2 (tier 1, 37.91112,-89.82373 +/-257m); p6__2 (tier 1, 37.90477,-89.82872 +/-100m); p8__2 (tier 1, 37.89792,-89.82474 +/-204m); p9__1 (tier 1, 37.89612,-89.81838 +/-212m); p9__2 (tier 3, 37.89513,-89.82015 +/-618m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chester, Illinois | 1906 | sanborn01788_004 p2","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:03:24Z","modified":"2026-10-19T08:03:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"993.0,1832.7 444.6,1819.1 444.6,1781.7 153.6,1796.2 69.1,1735.5 44.5,1607.9 51.0,588.3 109.8,175.7 59.1,134.6 125.5,109.5 110.5,63.6 1497.4,31.8 1563.2,98.5 1520.0,475.4 1588.8,873.5 1571.4,1248.3 1556.8,1248.3 1558.9,1745.7 1561.7,1833.8 993.0,1832.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1000.0,706.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.820427,37.915205]}},{"type":"Feature","properties":{"resourceCoords":[1000.0,1267.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.8213617,37.914458]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0003__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 | 1906 | sanborn01788_004 p3 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T08:03:24Z","modified":"2026-10-19T08:03:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1552.2,1128.6 1547.2,763.4 1550.2,537.9 1548.3,136.3 1550.4,72.4 983.4,80.8 436.2,76.3 435.7,39.0 145.7,58.4 43.1,294.3 79.0,319.3 71.0,533.0 493.0,533.8 607.5,786.8 670.9,1030.2 654.6,1427.0 652.2,1426.9 652.2,1427.4 512.4,1420.7 95.1,1402.2 40.5,1529.8 63.5,1794.0 613.6,1890.1 1396.4,1872.0 1481.8,1774.5 1612.0,1138.8 1612.0,1133.9 1552.2,1128.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[531.0,1643.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82572232899012,37.91226878512569]}},{"type":"Feature","properties":{"resourceCoords":[1274.0,1571.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82436342828501,37.91136766830865]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0003__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 | 1906 | sanborn01788_004 p3 [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":"0.0"},{"label":"split_canvas_y","value":"2142.0"},{"label":"split_canvas_w","value":"2650.8"},{"label":"split_canvas_h","value":"3567.6"}],"created":"2026-10-19T08:03:24Z","modified":"2026-10-19T08:03:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"625.5,1383.7 651.4,1207.2 532.3,695.5 449.9,567.8 19.1,568.2 33.0,1318.9 1.0,1361.7 1.0,1363.3 109.1,1401.1 158.2,1403.5 433.9,1416.8 567.4,1355.5 563.7,1405.0 625.5,1383.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[637.7,1333.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82707507071449,37.90671556950225]}},{"type":"Feature","properties":{"resourceCoords":[188.9,1528.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82737156786357,37.90582962431762]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0004__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 | 1906 | sanborn01788_004 p4 [1]","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":"2026-10-19T08:03:24Z","modified":"2026-10-19T08:03:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"152.6,1623.5 156.0,1607.9 654.2,1623.2 679.3,1829.6 1036.6,1885.2 1529.8,1875.3 1590.3,1815.0 1575.9,511.4 1294.0,511.3 1259.1,33.1 106.5,7.3 106.8,1.0 92.4,1.0 97.3,491.1 100.6,578.0 97.8,641.2 95.5,1038.8 90.1,1261.9 91.2,1623.5 152.6,1623.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[95.0,38.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82045082677922,37.91369663444053]}},{"type":"Feature","properties":{"resourceCoords":[1005.0,1513.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82140834191368,37.91049996426792]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0004__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 | 1906 | sanborn01788_004 p4 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.09"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"5163.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1288.8"},{"label":"split_canvas_h","value":"2034.0"}],"created":"2026-10-19T08:03:24Z","modified":"2026-10-19T08:03:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,0.0 1290.8,0.0 1294.1,266.0 1297.9,508.5 1613.0,508.5 1613.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1290.8,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82152564196755,37.91291525444704]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.8208281262379,37.912327694233404]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,508.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82199118995932,37.911456078107754]}},{"type":"Feature","properties":{"resourceCoords":[1290.8,508.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82268870568898,37.912043638321386]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0006__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 | 1906 | sanborn01788_004 p6 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"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":"2026-10-19T08:03:24Z","modified":"2026-10-19T08:03:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1261.5,980.6 1242.0,964.4 1259.8,669.6 1261.5,669.5 1261.5,667.6 1283.8,667.3 1332.7,662.4 1368.2,560.2 1508.5,550.7 1468.9,507.5 1506.9,224.0 1439.8,96.8 850.9,170.1 602.9,149.1 430.5,58.8 122.8,102.7 78.8,1.0 28.4,1.0 100.1,130.6 107.6,411.3 122.3,411.6 75.6,585.9 101.2,609.8 38.0,1483.2 125.5,1860.2 858.5,1813.7 1311.7,1884.9 1567.2,1849.2 1531.2,1355.2 1351.6,1192.0 1327.2,1035.4 1261.5,1032.0 1261.5,980.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[276.0,429.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82738786031737,37.90569546859197]}},{"type":"Feature","properties":{"resourceCoords":[120.0,1616.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82952984868282,37.90427945653369]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0007__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 | 1906 | sanborn01788_004 p7 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.67"},{"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":"2026-10-19T08:03:24Z","modified":"2026-10-19T08:03:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"32.8,158.6 91.8,240.5 61.6,682.7 138.5,913.5 115.3,1216.5 157.8,1275.4 93.4,1831.7 297.0,1890.7 335.6,1845.0 719.6,1881.3 919.1,1773.4 1091.6,1863.8 1554.8,1861.0 1578.3,851.0 1428.4,493.9 1189.5,460.4 1188.2,457.5 1185.5,457.5 1185.5,451.9 1139.2,353.4 1138.7,142.5 1139.3,137.1 904.3,35.0 584.6,55.4 454.1,3.7 298.6,82.6 280.8,51.7 32.8,158.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1088.0,686.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82494703148802,37.901006909029036]}},{"type":"Feature","properties":{"resourceCoords":[420.0,686.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82586699922965,37.89999952393268]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0007__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 | 1906 | sanborn01788_004 p7 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.71"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4742.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1710.0"},{"label":"split_canvas_h","value":"1830.0"}],"created":"2026-10-19T08:03:24Z","modified":"2026-10-19T08:03:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0007__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1381.8,456.5 1461.0,456.5 1479.3,456.5 1592.4,441.1 1595.3,37.4 1208.7,11.4 1191.5,343.2 1185.5,363.9 1382.5,431.2 1382.3,436.6 1381.8,456.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0007__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1185.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82702232136097,37.901925248038935]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82635665182727,37.902542188816795]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,457.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82551828467275,37.9019812553911]}},{"type":"Feature","properties":{"resourceCoords":[1185.5,457.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.82618395420646,37.90136431461324]}},{"type":"Feature","properties":{"resourceCoords":[1382.3,436.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.825916,37.901674]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0008__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 | 1906 | sanborn01788_004 p8 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.41"},{"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":"4464.8"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T08:03:24Z","modified":"2026-10-19T08:03:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1052.1,1616.0 1078.4,1102.1 974.5,43.5 309.7,46.2 172.9,368.8 72.8,733.6 60.0,1476.5 179.4,1752.8 350.8,1854.1 711.7,1800.2 730.5,1821.8 959.3,1697.5 979.0,1725.7 1107.3,1645.3 1106.9,1632.1 1052.1,1616.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104cm:g017881906:01788_1906-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[838.1,780.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82915826325781,37.90146258932601]}},{"type":"Feature","properties":{"resourceCoords":[838.1,1272.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.82825035126191,37.90084058696019]}}]}}]}