{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03968_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Coldwater, Michigan | 1908 | key map | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039681908:03968_1908-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Coldwater, Michigan | 1908 | sanborn03968_004 p1 [2]","metadata":[{"label":"streets","value":"42"},{"label":"intersections","value":"85"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6938.1"},{"label":"split_canvas_h","value":"4503.3"}],"created":"2026-09-22T23:08:39Z","modified":"2026-09-22T23:08:39Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039681908:03968_1908-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039681908:03968_1908-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1125.8 844.8,1125.7 1628,1125.6 1628,0.0 -0.0,0.0 0.0,1125.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114cm:g039681908:03968_1908-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[758.5,455.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.005262,41.942686]}},{"type":"Feature","properties":{"resourceCoords":[679.7,999.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-84.993099,41.939384]}}]}}]}