{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09750_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Casper, Wyoming | 1907 | 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:gmd426m:g4264m:g4264cm:g097501907:09750_1907-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Casper, Wyoming | 1907 | sanborn09750_003 p1 [2]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"2679.7"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4258.4"},{"label":"split_canvas_h","value":"8102.0"}],"created":"2026-10-19T16:56:08Z","modified":"2026-10-19T16:56:08Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd426m:g4264m:g4264cm:g097501907:09750_1907-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd426m:g4264m:g4264cm:g097501907:09750_1907-0001","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"673.2,942.6 669.9,942.3 673.2,1206.0 673.2,1920 682.9,1920 1628,1920 1628,0.0 673.2,0.0 673.2,942.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd426m:g4264m:g4264cm:g097501907:09750_1907-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1280.6,145.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-106.3138436,42.846679]}},{"type":"Feature","properties":{"resourceCoords":[1328.3,145.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-106.3124299,42.8466671]}}]}}]}