{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04910_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Washington, Missouri | 1916 | key map | 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"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164wm:g04910004:sb000010__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Washington, Missouri | 1916 | sanborn04910_004 p1 [2]","metadata":[{"label":"streets","value":"35"},{"label":"intersections","value":"101"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"9023.5"},{"label":"split_canvas_h","value":"10632.3"}],"created":"2026-10-19T16:17:46Z","modified":"2026-10-19T16:17:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164wm:g04910004:sb000010__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164wm:g04910004:sb000010","type":"ImageService3","width":2151,"height":2554},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2151,0.0 0.0,0.0 0.0,2042.9 1249.8,2042.9 1244.7,2554 2151,2554 2151,1132.3 2151,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd416m:g4164m:g4164wm:g04910004:sb000010__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[147.1,534.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.0243431,38.5597745]}},{"type":"Feature","properties":{"resourceCoords":[1082.6,711.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-91.0084773,38.5572212]}}]}}]}