{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01995_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Marengo, Illinois | 1912 | 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":"10"},{"label":"placed","value":"5"},{"label":"unplaced","value":"5"},{"label":"fit sources","value":"georef-snap 3, georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"3 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 42.27634,-88.21898 +/-149m); p1__3 (tier 4, 42.24970,-88.60695 +/-296m); p4__2 (tier 1, 42.24883,-88.60408 +/-100m); p4__3 (tier 1, 42.24954,-88.60782 +/-100m); p5__2 (tier 1, 42.24685,-88.59645 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Marengo, Illinois | 1912 | sanborn01995_004 p1 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"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":"4363.6"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T17:38:21Z","modified":"2026-10-19T17:38:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1062.9,1884.7 999.2,1852.2 1034.5,1356.8 826.4,1345.7 722.9,1146.5 712.6,953.0 817.2,764.9 815.5,650.1 822.1,649.6 822.1,648.0 822.2,648.0 845.9,648.0 1080.5,631.6 1021.0,37.2 88.9,51.9 72.1,367.5 134.0,367.1 145.3,1148.1 33.1,1545.2 1.3,1639.5 1062.9,1884.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[599.0,486.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.60487587436982,42.25252826901998]}},{"type":"Feature","properties":{"resourceCoords":[599.0,34.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.60485784196243,42.25337839713423]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Marengo, Illinois | 1912 | sanborn01995_004 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:38:21Z","modified":"2026-10-19T17:38:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1161.2,174.3 770.2,61.3 1.0,67.8 1.0,128.9 99.3,134.8 51.8,340.3 105.9,813.6 64.4,1641.5 115.1,1761.2 392.1,1878.8 1276.0,1863.1 1278.3,1912.0 1285.4,1912.0 1296.7,1912.0 1326.5,1423.5 1355.9,1001.1 1442.2,709.9 1569.7,295.4 1270.8,212.0 1161.2,174.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[152.0,543.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.60728083400812,42.25248447395089]}},{"type":"Feature","properties":{"resourceCoords":[1324.0,1432.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.60960090515825,42.250265541039575]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Marengo, Illinois | 1912 | sanborn01995_004 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T17:38:21Z","modified":"2026-10-19T17:38:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"583.6,70.0 1080.7,108.4 1510.5,145.2 1503.8,630.5 1502.0,1140.0 1523.4,1145.5 1541.8,1854.2 903.3,1881.5 118.4,1804.5 48.1,1523.1 106.8,1350.6 42.8,1234.9 87.0,1069.5 31.1,788.1 57.2,67.8 583.9,51.4 583.6,70.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1022.0,1540.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.60970500246107,42.24757946583405]}},{"type":"Feature","properties":{"resourceCoords":[1022.0,90.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.609727930144,42.25029437004266]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Marengo, Illinois | 1912 | sanborn01995_004 p4 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.92"},{"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":"2026-10-19T17:38:21Z","modified":"2026-10-19T17:38:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"130.8,1825.4 225.9,1825.3 428.1,1757.0 803.3,1782.2 816.6,1836.2 994.5,1447.5 989.5,1445.3 1314.8,568.4 1342.2,578.9 1438.3,226.5 972.6,87.1 965.9,103.6 865.0,398.0 457.4,246.2 170.7,142.8 144.0,620.0 121.2,1121.1 142.0,1127.4 130.8,1825.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[865.0,398.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.6066783,42.2497759]}},{"type":"Feature","properties":{"resourceCoords":[144.0,620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.6085008,42.249288]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Marengo, Illinois | 1912 | sanborn01995_004 p5 [1]","metadata":[{"label":"streets","value":"7"},{"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":"2026-10-19T17:38:21Z","modified":"2026-10-19T17:38:21Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"134.9,1852.3 145.7,1867.9 379.9,1883.9 1579.1,1840.0 1610.8,1394.7 1541.0,516.8 1198.3,464.6 1189.9,464.6 1189.9,463.2 1187.8,462.9 1072.2,294.2 1094.7,103.8 753.2,43.6 148.8,85.9 184.1,458.2 154.0,458.0 159.3,1415.5 165.0,1415.8 134.9,1852.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd410m:g4104m:g4104mm:g019951912:01995_1912-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[154.0,458.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.6055031,42.2494936]}},{"type":"Feature","properties":{"resourceCoords":[1494.0,458.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-88.6023033,42.2487286]}}]}}]}