{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03828_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Randolph, Massachusetts | 1919 | 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:gmd376m:g3764m:g3764rm:g038281919:03828_1919-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Randolph, Massachusetts | 1919 | sanborn03828_005 p1 [1]","metadata":[{"label":"streets","value":"27"},{"label":"intersections","value":"30"},{"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":"5156.1"}],"created":"2026-09-22T03:39:47Z","modified":"2026-09-22T03:39:47Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764rm:g038281919:03828_1919-0001__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764rm:g038281919:03828_1919-0001/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2286.8,5156.1 4218.6,4225.8 6878.4,4252.5 6878.4,0.0 -0.0,-0.0 0.0,3260.9 0.0,5148.6 2063.2,5155.3 2273.4,5156.1 2286.8,5156.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764rm:g038281919:03828_1919-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2574.3,3347.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0384974,42.1641247]}},{"type":"Feature","properties":{"resourceCoords":[1448.2,1432.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0481622,42.1741823]}}]}}]}