{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn01674_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Shelley, Idaho | 1921 | key map | 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"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd427m:g4274m:g4274sm:g016741921:01674_1921-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Shelley, Idaho | 1921 | sanborn01674_003 p1 [2]","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"60"},{"label":"split_canvas_x","value":"4275.3"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2603.1"},{"label":"split_canvas_h","value":"6516.6"}],"created":"2026-09-21T23:55:49Z","modified":"2026-09-21T23:55:49Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd427m:g4274m:g4274sm:g016741921:01674_1921-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd427m:g4274m:g4274sm:g016741921:01674_1921-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,1629.2 1613,0.0 1068.8,0.0 1068.8,1474.0 1138.6,1629.2 1613,1629.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd427m:g4274m:g4274sm:g016741921:01674_1921-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1302.1,567.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-112.1248582,43.3796514]}},{"type":"Feature","properties":{"resourceCoords":[1431.9,703.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-112.1210979,43.3762445]}}]}}]}