{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04925_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Anaconda, Montana | 1891 | 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:gmd425m:g4254m:g4254am:g4254am_g049251891:04925_1891-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Anaconda, Montana | 1891 | sanborn04925_004 p1 [2]","metadata":[{"label":"streets","value":"24"},{"label":"intersections","value":"95"},{"label":"split_canvas_x","value":"3487.7"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3390.8"},{"label":"split_canvas_h","value":"8074.1"}],"created":"2026-10-19T14:14:52Z","modified":"2026-10-19T14:14:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254am:g4254am_g049251891:04925_1891-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254am:g4254am_g049251891:04925_1891-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1390.9,0.0 871.9,0.0 873.2,288.1 1113.0,1117.9 1264.0,1116.9 1278.0,1913 1613,1913 1613,0.0 1390.9,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd425m:g4254m:g4254am:g4254am_g049251891:04925_1891-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1244.3,554.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-112.9550953,46.1275787]}},{"type":"Feature","properties":{"resourceCoords":[1246.8,754.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-112.9493865,46.1265827]}}]}}]}