{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01193_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Watertown, Connecticut | 1927 | 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:gmd378m:g3784m:g3784wm:g3784wm_g011931927:01193_1927-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Watertown, Connecticut | 1927 | sanborn01193_003 p1 [2]","metadata":[{"label":"streets","value":"40"},{"label":"intersections","value":"38"},{"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":"5390.4"}],"created":"2026-09-22T12:37:03Z","modified":"2026-09-22T12:37:03Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784wm:g3784wm_g011931927:01193_1927-0001__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784wm:g3784wm_g011931927:01193_1927-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6878.4,0.0 0.0,0.0 0.0,5380.8 6872.1,5390.4 6878.4,5390.4 6878.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784wm:g3784wm_g011931927:01193_1927-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1134.7,2252.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.1204954,41.5991755]}},{"type":"Feature","properties":{"resourceCoords":[1109.1,880.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.1235616,41.6090581]}}]}}]}