{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04853_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Saint Clair, Missouri | 1950 | 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":"9"},{"label":"placed","value":"5"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef-snap 4, georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p1__2 (tier 4, 38.34552,-90.98256 +/-712m); p3__1 (tier 1, 38.34292,-90.97676 +/-100m); p3__3 (tier 1, 38.34286,-90.97589 +/-100m); p3__4 (tier 1, 38.35094,-90.98653 +/-192m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Saint Clair, Missouri | 1950 | sanborn04853_003 p1 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.28"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3580.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4072.0"}],"created":"2026-10-18T20:36:37Z","modified":"2026-10-18T20:36:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1315.3,903.1 1315.2,932.0 880.9,906.9 121.0,938.0 95.3,1353.5 26.7,1674.8 37.9,1817.6 79.2,1853.2 196.7,1846.5 400.5,1910.8 1041.3,1912.0 1046.6,1912.0 1142.8,1909.5 1207.8,1867.3 1406.4,1873.1 1410.0,1866.3 1412.8,1638.8 1411.2,1516.8 1405.8,1500.7 1346.1,903.3 1315.3,903.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[685.0,947.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.9900763011272,38.34393331626419]}},{"type":"Feature","properties":{"resourceCoords":[685.0,1208.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.99010887414344,38.34297151538962]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Saint Clair, Missouri | 1950 | sanborn04853_003 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T20:36:37Z","modified":"2026-10-18T20:36:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"880.6,1862.6 843.7,1777.9 838.5,1676.7 454.1,1674.6 116.1,1670.1 115.5,1374.4 105.2,1058.2 215.5,1061.7 797.5,652.1 809.3,708.2 1113.5,564.3 1113.5,544.4 1389.8,934.4 1468.5,916.5 1457.1,980.4 1467.0,1213.9 1110.0,1288.5 1101.8,1368.2 1612.0,1236.4 1612.0,1275.5 965.2,1909.8 964.4,1912.0 933.0,1912.0 911.7,1912.0 880.6,1862.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[95.0,1368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.9826647586439,38.3472689539878]}},{"type":"Feature","properties":{"resourceCoords":[1103.0,497.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.97992997202716,38.34840360881328]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Saint Clair, Missouri | 1950 | sanborn04853_003 p3 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.33"},{"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":"2026-10-18T20:36:37Z","modified":"2026-10-18T20:36:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"341.6,1867.2 369.3,1736.5 398.4,1574.9 453.9,1588.7 793.7,1443.9 793.6,1473.6 963.6,1433.5 965.8,1423.5 1063.7,1651.4 1105.6,1650.8 1092.9,1682.0 1072.6,1801.5 883.3,1800.7 870.5,1840.3 1520.0,1810.8 1581.6,1785.9 1557.8,1242.5 1502.5,1143.4 1294.5,1115.9 1125.8,899.4 1125.4,895.4 1178.4,764.8 1233.0,624.8 1313.0,538.3 1322.1,525.8 1334.1,509.2 1345.4,493.6 1351.6,488.8 1376.8,469.4 1546.8,285.5 1561.1,219.9 1508.6,55.5 1120.1,38.5 1055.4,77.9 946.6,252.6 671.6,265.7 669.2,277.7 425.0,279.7 387.6,280.0 371.2,280.1 351.2,281.1 94.4,323.5 50.4,462.6 64.9,650.7 16.2,978.2 78.0,1742.2 1.0,1733.8 1.0,1742.4 341.6,1867.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[416.0,1386.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.98238829393152,38.348476655825195]}},{"type":"Feature","properties":{"resourceCoords":[956.0,1417.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.97997409238474,38.34833838073522]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Saint Clair, Missouri | 1950 | sanborn04853_003 p4","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.57"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T20:36:37Z","modified":"2026-10-18T20:36:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"55.3,731.5 172.0,471.6 162.4,274.2 116.0,191.3 101.3,67.2 532.5,36.0 634.4,45.7 634.5,53.6 961.6,168.2 958.0,186.7 1121.5,221.5 1307.6,259.5 1300.4,309.1 1310.1,353.7 1320.7,381.2 1331.2,419.4 1337.4,584.3 1365.7,905.7 1274.2,952.5 1342.2,1337.5 1389.2,1499.5 1437.0,1487.0 1508.3,1775.9 1522.3,1852.5 1451.6,1865.3 1252.8,1831.0 792.4,1866.8 388.8,1842.2 176.9,1859.5 152.8,1904.9 154.7,1678.0 152.7,1556.2 147.3,1540.2 85.8,944.4 55.2,944.3 55.3,731.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[583.0,341.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.984557,38.3461972]}},{"type":"Feature","properties":{"resourceCoords":[1437.0,1487.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.9807074,38.341882]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Saint Clair, Missouri | 1950 | sanborn04853_003 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T20:36:37Z","modified":"2026-10-18T20:36:37Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"145.9,398.4 172.4,401.7 543.5,142.6 546.7,123.3 907.8,90.0 965.9,63.5 966.1,65.5 1368.0,30.2 1552.2,74.7 1586.2,1688.5 1566.7,1856.5 1516.5,1885.5 1216.2,1885.0 1055.5,1861.3 804.4,1876.3 557.3,1835.6 446.5,1842.3 444.4,1868.3 394.6,1879.0 378.1,1802.0 297.3,1512.4 249.4,1526.5 197.1,1364.3 116.6,977.4 207.6,927.4 169.2,603.6 157.9,437.2 146.1,399.0 145.9,398.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164sm:g4164sm_g048531950:04853_1950-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[295.0,1509.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.98071715007538,38.341894841765644]}},{"type":"Feature","properties":{"resourceCoords":[478.0,573.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.97960684596141,38.34526169830897]}}]}}]}