{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn05797_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Cambridge, New-York | 1910 | 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://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804cm:g3804cm_g057971910:05797_1910-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Cambridge, New-York | 1910 | sanborn05797_005 p1 [2]","metadata":[{"label":"streets","value":"17"},{"label":"intersections","value":"29"},{"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":"5330.6"}],"created":"2026-09-22T08:46:36Z","modified":"2026-09-22T08:46:36Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804cm:g3804cm_g057971910:05797_1910-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804cm:g3804cm_g057971910:05797_1910-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,-0.0 1280.4,0.0 938.2,0.0 -0.0,-0.0 0.0,1332.7 532.1,1331.0 535.8,968.3 1613,971.4 1613,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804cm:g3804cm_g057971910:05797_1910-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[406.3,358.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.376182,43.027762]}},{"type":"Feature","properties":{"resourceCoords":[275.9,884.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.390338,43.027876]}}]}}]}