{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn08075_001.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Barrington, Rhode-Island | 1921 | 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:gmd377m:g3774m:g3774bm:g3774bm_g080751921:08075_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":"Barrington, Rhode-Island | 1921 | sanborn08075_001 p1 [2]","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"11"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6878.4"},{"label":"split_canvas_h","value":"4152.2"}],"created":"2026-09-22T14:01:29Z","modified":"2026-09-22T14:01:29Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd377m:g3774m:g3774bm:g3774bm_g080751921:08075_1921-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd377m:g3774m:g3774bm:g3774bm_g080751921:08075_1921-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,4122.7 0.0,4152.2 1771.7,4148.7 6878.4,4137.6 6878.4,0.0 0.0,0.0 0.0,4122.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd377m:g3774m:g3774bm:g3774bm_g080751921:08075_1921-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1568.7,2128.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3363065,41.7300614]}},{"type":"Feature","properties":{"resourceCoords":[3101.2,3410.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.303887,41.711347]}}]}}]}