{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn08227_005.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Egan, South-Dakota | 1917 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"2"},{"label":"placed","value":"2"},{"label":"unplaced","value":"0"},{"label":"fit sources","value":"georef 2"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 2 panels"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184em:g082271917:08227_1917-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Egan, South-Dakota | 1917 | sanborn08227_005 p1 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"6046.0"},{"label":"split_canvas_w","value":"1888.0"},{"label":"split_canvas_h","value":"1662.0"}],"created":"2026-09-21T08:10:17Z","modified":"2026-09-21T08:10:17Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184em:g082271917:08227_1917-0001__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184em:g082271917:08227_1917-0001/info.json","type":"ImageService2","height":7708,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7708.0 1888.0,7708.0 1888.0,6067.2 0.0,6046.0 -0.0,7708.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184em:g082271917:08227_1917-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,6046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.64789573769815,43.999730310577895]}},{"type":"Feature","properties":{"resourceCoords":[1888.0,6046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.64788988008367,43.99892239959755]}},{"type":"Feature","properties":{"resourceCoords":[1888.0,7708.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.64888010441383,43.99891868720949]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7708.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.64888596202832,43.99972659818984]}},{"type":"Feature","properties":{"resourceCoords":[1016.0,7364.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6486781,43.9992926]}},{"type":"Feature","properties":{"resourceCoords":[1016.0,7364.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6486781,43.9992926]}},{"type":"Feature","properties":{"resourceCoords":[1016.0,7364.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6486781,43.9992926]}},{"type":"Feature","properties":{"resourceCoords":[1016.0,7364.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6486781,43.9992926]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184em:g082271917:08227_1917-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Egan, South-Dakota | 1917 | sanborn08227_005 p1 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"19"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7708.0"}],"created":"2026-09-21T08:10:17Z","modified":"2026-09-21T08:10:17Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184em:g082271917:08227_1917-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184em:g082271917:08227_1917-0001/info.json","type":"ImageService2","height":7708,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2078.7,1455.6 190.8,1463.0 185.1,0.0 0.0,0.0 0.0,6046.0 1888.0,6067.2 1888.0,7708.0 6512.0,7708.0 6512.0,0.0 2073.1,0.0 2078.7,1455.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd418m:g4184m:g4184em:g082271917:08227_1917-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1108.0,4992.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6457905,43.9993169]}},{"type":"Feature","properties":{"resourceCoords":[5840.0,136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.6486828,44.0013391]}}]}}]}