{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03930_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Big Rapids, Michigan | 1899 | 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:gmd411m:g4114m:g4114bm:g039301899:03930_1899-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Big Rapids, Michigan | 1899 | sanborn03930_003 p1 [1]","metadata":[{"label":"streets","value":"61"},{"label":"intersections","value":"114"},{"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":"4891.8"}],"created":"2026-10-19T21:19:46Z","modified":"2026-10-19T21:19:46Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039301899:03930_1899-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039301899:03930_1899-0001","type":"ImageService3","width":1628,"height":1927},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628,0.0 0.0,0.0 0.0,1170.4 1012.4,1170.4 1012.4,1223.0 1628,1223.0 1628,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd411m:g4114m:g4114bm:g039301899:03930_1899-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[373.6,521.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.4825757,43.706035]}},{"type":"Feature","properties":{"resourceCoords":[194.5,673.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.4885215,43.7020204]}}]}}]}