{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn05213_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Madison, Nebraska | 1921 | mapsnap generated fit (2026-10-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-20"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"8"},{"label":"placed","value":"5"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 4, georef-snap 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 41.82643,-97.45639 +/-307m); p1__2 (tier 1, 42.03491,-97.40999 +/-190m); p1__4 (tier 4, 41.82643,-97.45639 +/-307m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Madison, Nebraska | 1921 | sanborn05213_006 p1 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4156.0"},{"label":"split_canvas_w","value":"2395.6"},{"label":"split_canvas_h","value":"1390.8"}],"created":"2026-10-20T04:16:07Z","modified":"2026-10-20T04:16:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"494.3,1361.8 587.4,1357.5 566.7,1039.0 520.6,1039.0 525.0,1121.0 446.6,1120.5 414.8,1058.5 139.4,1105.3 93.7,1050.0 8.9,1063.3 10.7,1357.0 322.5,1326.4 494.3,1361.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1039.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.45768241816542,41.82403728002327]}},{"type":"Feature","properties":{"resourceCoords":[598.9,1039.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.45610602306485,41.824043639321836]}},{"type":"Feature","properties":{"resourceCoords":[598.9,1386.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.45610105403756,41.82336270103699]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1386.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-97.45767744913813,41.823356341738425]}},{"type":"Feature","properties":{"resourceCoords":[556.9,1357.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.4564943,41.823416]}},{"type":"Feature","properties":{"resourceCoords":[556.9,1357.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.456212,41.823419]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0001__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Madison, Nebraska | 1921 | sanborn05213_006 p1 [5]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.70"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5503.2"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"2148.8"}],"created":"2026-10-20T04:16:07Z","modified":"2026-10-20T04:16:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0001__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1516.1,1410.6 1417.8,1411.3 147.5,1428.5 131.1,1863.2 119.7,1873.5 1062.0,1874.5 1517.5,1874.0 1516.1,1410.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0001__5/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[608.0,1874.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.458671,41.827927]}},{"type":"Feature","properties":{"resourceCoords":[608.0,1415.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.458679,41.828837]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Madison, Nebraska | 1921 | sanborn05213_006 p2","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T04:16:07Z","modified":"2026-10-20T04:16:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1098.8,38.4 1565.0,52.0 1551.9,522.3 1538.0,982.1 1526.6,1454.5 1509.0,1912.0 1462.8,1912.0 1464.0,1879.8 160.2,1887.3 44.0,1827.3 52.9,78.0 134.6,8.0 1098.8,38.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[587.0,1426.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.458659,41.82521]}},{"type":"Feature","properties":{"resourceCoords":[1565.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.456251,41.827939]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Madison, Nebraska | 1921 | sanborn05213_006 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T04:16:07Z","modified":"2026-10-20T04:16:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"52.6,882.8 21.4,144.2 73.3,42.2 1265.2,21.6 1549.9,74.9 1595.7,1808.0 1549.0,1871.2 831.0,1869.8 571.8,1866.3 275.3,1873.9 70.2,1875.7 69.3,1381.9 68.1,883.3 52.6,882.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[575.0,890.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.45500777572782,41.82885346587685]}},{"type":"Feature","properties":{"resourceCoords":[575.0,1859.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.45499020983559,41.827065552761184]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Madison, Nebraska | 1921 | sanborn05213_006 p4","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T04:16:07Z","modified":"2026-10-20T04:16:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"99.6,937.0 93.1,1387.3 48.0,1386.7 46.1,1532.5 90.2,1532.8 89.4,1848.2 1.0,1848.3 1.0,1852.0 96.2,1873.3 1562.4,1851.4 1583.2,774.4 1469.9,43.4 1481.5,27.9 812.0,22.8 570.2,18.2 293.8,23.7 102.4,24.3 99.7,474.6 99.6,937.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd419m:g4194m:g4194mm:g052131921:05213_1921-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[564.0,940.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.454983,41.825228]}},{"type":"Feature","properties":{"resourceCoords":[564.0,474.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-97.454999,41.82615]}}]}}]}