{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03695_004.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Braintree, Massachusetts | 1901 | key map | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036951901:03695_1901-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Braintree, Massachusetts | 1901 | sanborn03695_004 p1 [2]","metadata":[{"label":"streets","value":"25"},{"label":"intersections","value":"40"},{"label":"split_canvas_x","value":"3729.5"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3149.0"},{"label":"split_canvas_h","value":"8074.1"}],"created":"2026-09-23T16:57:19Z","modified":"2026-09-23T16:57:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036951901:03695_1901-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036951901:03695_1901-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,1913 1613,0.0 1097.4,0.0 1103.4,1322.3 933.2,1329.5 932.4,1913 932.4,1913 1613,1913\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036951901:03695_1901-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1270.2,1091.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0059551,42.2035603]}},{"type":"Feature","properties":{"resourceCoords":[1417.1,80.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0047026,42.2228898]}}]}}]}