{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03671_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Adams, Massachusetts | 1908 | key map | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036711908:03671_1908-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Adams, Massachusetts | 1908 | sanborn03671_005 p1","metadata":[{"label":"streets","value":"61"},{"label":"intersections","value":"63"}],"created":"2026-10-19T23:13:12Z","modified":"2026-10-19T23:13:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036711908:03671_1908-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036711908:03671_1908-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1913.0 0.0,0.0 1613.0,0.0 1613.0,1913.0 0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036711908:03671_1908-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[311.9,1375.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.1275382,42.6149298]}},{"type":"Feature","properties":{"resourceCoords":[395.1,1066.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.1206266,42.6272818]}}]}}]}