{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02802_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Redfield, Iowa | 1933 | 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":"7"},{"label":"placed","value":"3"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 3"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 6 panels"},{"label":"unplaced pages","value":"p2__2 (tier 1, 41.58712,-94.19219 +/-123m); p2__3 (tier 1, 41.59095,-94.20049 +/-115m); p2__5 (tier 1, 41.59092,-94.20075 +/-100m); p2__6 (tier 1, 41.59756,-94.19496 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Redfield, Iowa | 1933 | sanborn02802_002 p1","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T21:00:28Z","modified":"2026-10-18T21:00:28Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"50.8,1877.9 304.1,1816.3 304.2,1825.3 819.7,1825.5 1574.0,1859.4 1537.2,1552.3 1609.6,795.6 1535.1,33.1 1324.8,34.4 1324.7,1.0 1315.3,1.0 1314.8,28.2 331.3,17.1 75.0,71.3 23.5,725.1 50.8,1877.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[298.0,790.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.197306,41.590617]}},{"type":"Feature","properties":{"resourceCoords":[1332.0,1309.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.194779,41.589642]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Redfield, Iowa | 1933 | sanborn02802_002 p2 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.89"},{"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":"3598.0"}],"created":"2026-10-18T21:00:28Z","modified":"2026-10-18T21:00:28Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"15.9,123.4 27.9,714.2 72.2,787.0 554.7,783.3 599.4,885.3 1513.2,893.0 1571.3,841.4 1573.5,169.2 1536.8,140.3 1533.2,110.3 912.9,74.5 782.0,74.0 268.4,71.9 268.4,63.0 15.9,123.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[782.0,74.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.196052,41.588703]}},{"type":"Feature","properties":{"resourceCoords":[270.0,751.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.1973279,41.587459]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0002__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Redfield, Iowa | 1933 | sanborn02802_002 p2 [4]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.66"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4156.8"},{"label":"split_canvas_y","value":"3598.0"},{"label":"split_canvas_w","value":"2295.2"},{"label":"split_canvas_h","value":"2246.0"}],"created":"2026-10-18T21:00:28Z","modified":"2026-10-18T21:00:28Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0002__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1057.0,1425.7 1056.7,1460.0 1354.2,1460.0 1361.3,1460.0 1569.3,1456.2 1610.5,1455.5 1612.0,953.6 1612.0,906.4 1129.0,912.2 1121.5,963.5 1063.1,919.4 1047.7,1425.6 1057.0,1425.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154rm:g028021933:02802_1933-0002__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1039.2,899.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19480929224893,41.593017694353165]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,899.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.1933954186201,41.59302094144267]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1461.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19339116512008,41.59198625856729]}},{"type":"Feature","properties":{"resourceCoords":[1039.2,1461.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-94.19480503874891,41.59198301147779]}},{"type":"Feature","properties":{"resourceCoords":[1059.2,1167.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-94.194758,41.5925244]}}]}}]}