{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn08258_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Rapid City, South-Dakota | 1903 | 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://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184rm:g082581903:08258_1903-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Rapid City, South-Dakota | 1903 | sanborn08258_005 p1 [2]","metadata":[{"label":"streets","value":"19"},{"label":"intersections","value":"83"},{"label":"split_canvas_x","value":"3205.7"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3732.4"},{"label":"split_canvas_h","value":"8129.9"}],"created":"2026-09-22T19:40:45Z","modified":"2026-09-22T19:40:45Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184rm:g082581903:08258_1903-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184rm:g082581903:08258_1903-0001/info.json","type":"ImageService2","height":7708,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6938.1,0.0 3654.4,0.0 3626.8,2945.9 3205.7,2940.8 3205.7,2942.1 3228.3,4812.7 3615.7,4817.3 3650.4,8129.9 6938.1,8129.9 6938.1,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184rm:g082581903:08258_1903-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4825.8,3004.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.226323,44.0832029]}},{"type":"Feature","properties":{"resourceCoords":[3621.2,3499.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-103.2340562,44.082175]}}]}}]}