{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02087_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Pekin, Illinois | 1885 | 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":"17"},{"label":"placed","value":"8"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 6, georef-snap 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 12 panels"},{"label":"unplaced pages","value":"p10__1 (tier 3, 40.56347,-89.65583 +/-544m); p10__2 (tier 1, 40.56379,-89.65456 +/-134m); p1__2 (tier 4, 40.57040,-89.64876 +/-566m); p6__2 (tier 1, 40.57213,-89.64595 +/-100m); p8__1 (tier 3, 40.56376,-89.65945 +/-544m); p8__2 (tier 3, 40.56376,-89.65945 +/-544m); p9__1 (tier 1, 40.57486,-89.64638 +/-100m); p9__3 (tier 1, 40.56610,-89.63769 +/-100m); p9__4 (tier 1, 40.56877,-89.65416 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pekin, Illinois | 1885 | sanborn02087_001 p2","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:42:17Z","modified":"2026-10-19T08:42:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"893.5,1866.5 893.3,1877.5 77.3,1879.5 81.1,1868.6 12.2,926.4 69.1,48.2 1567.8,18.4 1559.5,396.0 1558.5,1019.5 1551.6,1499.2 1546.0,1574.8 1502.3,1789.3 1497.0,1880.3 893.5,1866.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[913.0,1121.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6503927,40.5723208]}},{"type":"Feature","properties":{"resourceCoords":[913.0,383.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6495754,40.5735855]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pekin, Illinois | 1885 | sanborn02087_001 p3","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:42:17Z","modified":"2026-10-19T08:42:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"765.1,1876.9 61.2,1878.5 64.9,1788.7 104.1,1576.5 108.3,1501.8 106.7,1028.8 96.5,414.2 98.0,41.9 910.4,11.2 1398.2,70.2 1396.7,243.9 1401.2,422.0 1405.9,824.7 1409.9,1513.0 1410.1,1887.8 765.1,1876.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[758.0,1154.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6474925,40.5711601]}},{"type":"Feature","properties":{"resourceCoords":[107.0,1154.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6489688,40.5717358]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pekin, Illinois | 1885 | sanborn02087_001 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:42:17Z","modified":"2026-10-19T08:42:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"850.6,1867.8 291.8,1874.0 6.1,1880.3 5.0,1851.8 53.5,1851.0 12.7,314.6 98.5,42.9 933.6,21.3 933.5,10.1 1551.6,9.7 1569.9,255.0 1572.5,376.7 1582.7,1205.4 1570.2,1429.9 1575.3,1887.8 840.5,1882.3 850.6,1867.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[940.0,1490.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.65292471718433,40.568606017682946]}},{"type":"Feature","properties":{"resourceCoords":[940.0,385.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6516729939971,40.570433872913796]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pekin, Illinois | 1885 | sanborn02087_001 p5","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:42:17Z","modified":"2026-10-19T08:42:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"141.2,1437.5 149.8,1219.0 126.8,413.3 122.2,295.0 100.5,56.8 811.3,39.7 1462.8,36.5 1475.3,373.2 1486.1,1024.9 1502.2,1016.0 1604.6,1280.1 1566.8,1689.2 1490.5,1858.5 1261.0,1774.7 700.8,1877.8 153.4,1882.7 141.2,1437.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[838.0,1133.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6495719,40.5680408]}},{"type":"Feature","properties":{"resourceCoords":[2636.0,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6446909,40.5676496]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pekin, Illinois | 1885 | sanborn02087_001 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":"2026-10-19T08:42:17Z","modified":"2026-10-19T08:42:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"68.2,1859.1 917.8,1855.9 896.2,1497.3 983.5,1245.8 983.5,1241.2 1020.7,1241.8 1570.0,1211.0 1572.7,173.4 1582.9,91.2 1404.4,88.9 1221.3,92.8 807.4,96.0 100.0,97.4 96.2,361.7 85.5,1409.3 90.2,1718.1 84.5,1788.2 68.2,1859.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[830.0,754.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.64415989504411,40.57063063123216]}},{"type":"Feature","properties":{"resourceCoords":[830.0,1414.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6427008191376,40.57006715107646]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pekin, Illinois | 1885 | sanborn02087_001 p7","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"22"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:42:17Z","modified":"2026-10-19T08:42:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"238.4,139.7 1.0,220.9 1.0,221.8 39.6,241.5 48.6,1626.3 94.8,1816.8 233.8,1874.8 1550.9,1888.2 1568.0,1818.3 1574.5,1749.0 1574.2,1443.5 1599.2,407.1 1606.6,145.8 1225.5,139.1 886.2,138.2 230.1,123.1 238.4,139.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1212.0,789.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6454206,40.5687511]}},{"type":"Feature","properties":{"resourceCoords":[1212.0,2085.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6425047,40.5676636]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0009__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pekin, Illinois | 1885 | sanborn02087_001 p9 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.59"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2218.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1487.6"},{"label":"split_canvas_h","value":"3755.6"}],"created":"2026-10-19T08:42:17Z","modified":"2026-10-19T08:42:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0009__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"895.4,916.7 909.4,926.7 909.2,380.9 906.1,101.5 886.3,37.7 703.1,19.7 599.1,48.8 642.1,85.2 593.1,115.2 580.9,184.9 567.1,580.5 640.5,725.6 896.7,841.2 895.4,916.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0009__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[554.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.65602769514501,40.56825223333815]}},{"type":"Feature","properties":{"resourceCoords":[926.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.65560450519509,40.56888652545305]}},{"type":"Feature","properties":{"resourceCoords":[926.5,938.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.65350183539348,40.568077490842036]}},{"type":"Feature","properties":{"resourceCoords":[554.6,938.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.65392502534341,40.56744319872713]}},{"type":"Feature","properties":{"resourceCoords":[909.5,380.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6547712,40.5685285]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0009__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pekin, Illinois | 1885 | sanborn02087_001 p9 [5]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.84"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3872.0"},{"label":"split_canvas_y","value":"5944.0"},{"label":"split_canvas_w","value":"2580.0"},{"label":"split_canvas_h","value":"1708.0"}],"created":"2026-10-19T08:42:17Z","modified":"2026-10-19T08:42:17Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0009__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1109.7,1811.6 1046.4,1813.2 1011.0,1912.0 1523.8,1912.0 1591.2,1828.2 1495.7,1678.7 1549.9,1569.7 1001.1,1516.7 986.6,1700.7 1072.4,1711.2 1109.7,1811.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104pm:g020871885:02087_1885-0009__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[968.0,1486.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.64686572152216,40.575260633523094]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1486.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.64543589610523,40.574683687251785]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.6459388504171,40.57396485729311]}},{"type":"Feature","properties":{"resourceCoords":[968.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-89.64736867583403,40.57454180356442]}},{"type":"Feature","properties":{"resourceCoords":[1059.0,1653.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-89.6468607,40.5748981]}}]}}]}