{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn02643_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Edgewood, Iowa | 1917 | mapsnap generated fit (2026-10-17)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-17"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"2"},{"label":"placed","value":"1"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 2 panels"},{"label":"unplaced pages","value":"p1__1 (tier 4, 42.64530,-91.40116 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154em:g026431917:02643_1917-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Edgewood, Iowa | 1917 | sanborn02643_001 p1 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.71"},{"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":"2026-10-17T23:27:42Z","modified":"2026-10-17T23:27:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154em:g026431917:02643_1917-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154em:g026431917:02643_1917-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"363.1,1764.5 539.2,1774.7 692.6,1869.0 1397.3,1881.7 1560.7,1814.2 1590.1,1356.4 1570.0,904.9 1520.8,897.0 1566.0,735.6 1457.2,515.1 1478.3,120.7 639.6,105.7 309.7,29.2 40.4,109.0 38.1,1413.2 100.5,1470.7 311.8,1481.5 363.1,1764.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd415m:g4154m:g4154em:g026431917:02643_1917-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[785.0,921.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.4012168,42.6453717]}},{"type":"Feature","properties":{"resourceCoords":[1265.0,1410.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.3999453,42.6444525]}}]}}]}