{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn07357_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Estacada, Oregon | 1931 | 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://tile.loc.gov/image-services/iiif/service:gmd:gmd429m:g4294m:g4294em:g4294em_g073571931:07357_1931-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Estacada, Oregon | 1931 | sanborn07357_003 p1 [2]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"35"},{"label":"split_canvas_x","value":"3813.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3065.5"},{"label":"split_canvas_h","value":"3262.4"}],"created":"2026-09-21T00:16:28Z","modified":"2026-09-21T00:16:28Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd429m:g4294m:g4294em:g4294em_g073571931:07357_1931-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd429m:g4294m:g4294em:g4294em_g073571931:07357_1931-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4416.7,0.0 3813.0,-0.0 3813.0,0.8 3835.5,1033.9 3877.5,2566.3 3879.3,2632.2 3882.7,2754.1 4182.5,2760.7 4313.1,2843.9 4442.9,2926.7 4963.7,3258.6 6878.4,3262.4 6878.4,862.2 6878.4,488.7 6878.4,0.0 4416.7,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd429m:g4294m:g4294em:g4294em_g073571931:07357_1931-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3938.4,1657.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.3349666,45.2936327]}},{"type":"Feature","properties":{"resourceCoords":[4152.2,1878.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.3338073,45.2926351]}}]}}]}