{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn04391_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Spring Valley, Minnesota | 1915 | 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:gmd414m:g4144m:g4144sm:g043911915:04391_1915-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Spring Valley, Minnesota | 1915 | sanborn04391_004 p1 [2]","metadata":[{"label":"streets","value":"28"},{"label":"intersections","value":"96"},{"label":"split_canvas_x","value":"1459.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5419.1"},{"label":"split_canvas_h","value":"4134.4"}],"created":"2026-09-22T15:43:54Z","modified":"2026-09-22T15:43:54Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd414m:g4144m:g4144sm:g043911915:04391_1915-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd414m:g4144m:g4144sm:g043911915:04391_1915-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1459.4,0.0 1459.4,228.1 1505.4,4134.4 6878.4,4070.1 6878.4,0.0 1459.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd414m:g4144m:g4144sm:g043911915:04391_1915-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2805.4,2425.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.392134,43.686903]}},{"type":"Feature","properties":{"resourceCoords":[3960.5,2574.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.3854175,43.6859225]}}]}}]}