{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02873_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Williamsburg, Iowa | 1916 | 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":"7"},{"label":"placed","value":"4"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef 2, georef-snap 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 41.66134,-92.00802 +/-348m); p1__2 (tier 4, 41.66134,-92.00802 +/-348m); p1__5 (tier 1, 41.69446,-92.00791 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Williamsburg, Iowa | 1916 | sanborn02873_004 p1 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.51"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1348.8"},{"label":"split_canvas_w","value":"3363.2"},{"label":"split_canvas_h","value":"6303.2"}],"created":"2026-10-19T18:20:26Z","modified":"2026-10-19T18:20:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"147.0,337.2 120.6,337.2 99.0,337.2 102.0,659.1 101.5,1769.5 104.0,1912.0 142.7,1912.0 153.7,1847.5 453.7,1877.5 475.2,1823.2 742.5,1777.5 812.6,1537.7 768.5,1055.5 835.7,432.1 442.2,351.0 151.3,374.4 147.0,337.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[102.0,1258.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.004651,41.660643]}},{"type":"Feature","properties":{"resourceCoords":[102.0,659.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.004612,41.661696]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0001__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Williamsburg, Iowa | 1916 | sanborn02873_004 p1 [4]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.52"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3363.2"},{"label":"split_canvas_y","value":"5118.0"},{"label":"split_canvas_w","value":"1658.8"},{"label":"split_canvas_h","value":"2534.0"}],"created":"2026-10-19T18:20:26Z","modified":"2026-10-19T18:20:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0001__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1148.8,1912.0 1149.8,1912.0 1157.0,1912.0 1166.9,1327.2 866.2,1325.7 860.5,1884.2 1149.3,1900.3 1148.8,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0001__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1185.7,1310.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.011544,41.662877]}},{"type":"Feature","properties":{"resourceCoords":[1185.7,1848.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.011564,41.661799]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Williamsburg, Iowa | 1916 | sanborn02873_004 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T18:20:26Z","modified":"2026-10-19T18:20:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"84.2,669.9 93.3,34.7 1497.3,38.1 1505.3,600.4 1521.2,600.1 1505.0,1178.1 1512.0,1178.4 1502.0,1735.3 1524.5,1735.1 1494.2,1895.2 88.2,1862.8 44.7,1439.7 75.3,670.0 84.2,669.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1212.0,1742.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.0089000851787,41.65965838071738]}},{"type":"Feature","properties":{"resourceCoords":[686.0,30.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.01013065164882,41.66283472586073]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Williamsburg, Iowa | 1916 | sanborn02873_004 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T18:20:26Z","modified":"2026-10-19T18:20:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1530.0,1885.1 895.0,1843.8 166.5,1891.5 88.7,1889.6 119.1,1729.9 96.7,1730.2 107.2,1174.4 100.2,1174.1 116.9,597.3 101.0,597.5 93.6,36.4 1472.5,41.1 1546.2,91.0 1568.2,303.2 1522.6,302.6 1521.7,608.7 1508.3,1664.2 1508.9,1799.7 1545.6,1800.8 1530.0,1885.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154wm:g028731916:02873_1916-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[954.0,590.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.00601693472164,41.66174671273906]}},{"type":"Feature","properties":{"resourceCoords":[1520.0,1740.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.0046592150416,41.65960322676333]}}]}}]}