{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03982_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Decatur, Michigan | 1922 | key map | mapsnap generated fit (2026-09-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-20"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g039821922:03982_1922-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Decatur, Michigan | 1922 | sanborn03982_005 p1 [1]","metadata":[{"label":"streets","value":"21"},{"label":"intersections","value":"38"},{"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":"8129.9"}],"created":"2026-09-20T23:32:59Z","modified":"2026-09-20T23:32:59Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g039821922:03982_1922-0001__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g039821922:03982_1922-0001/info.json","type":"ImageService2","height":7708,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6938.1,0.0 0.0,0.0 0.0,8129.9 5681.8,8129.9 5715.7,6763.1 6938.1,6763.1 6938.1,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g039821922:03982_1922-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5904.3,3486.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9697873,42.1077765]}},{"type":"Feature","properties":{"resourceCoords":[4298.2,3178.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.980202,42.104398]}}]}}]}