{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn06623_008.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Caldwell, Ohio | 1932 | key map | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g066231932:06623_1932-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Caldwell, Ohio | 1932 | sanborn06623_008 p1 [2]","metadata":[{"label":"streets","value":"18"},{"label":"intersections","value":"40"},{"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":"4594.4"}],"created":"2026-09-23T20:41:58Z","modified":"2026-09-23T20:41:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g066231932:06623_1932-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g066231932:06623_1932-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628,0.0 0.0,0.0 0.0,1136.0 1628,1148.6 1628,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd408m:g4084m:g4084cm:g4084cm_g066231932:06623_1932-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[374.1,351.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.520953,39.748709]}},{"type":"Feature","properties":{"resourceCoords":[652.8,558.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-81.514159,39.74521]}}]}}]}