{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn05494_002.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Haddon Heights, New-Jersey | 1914 | 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:gmd381m:g3814m:g3814hm:g3814hm_g054941914:05494_1914-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haddon Heights, New-Jersey | 1914 | sanborn05494_002 p1 [2]","metadata":[{"label":"streets","value":"23"},{"label":"intersections","value":"69"},{"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":"4316.3"}],"created":"2026-09-22T05:16:05Z","modified":"2026-09-22T05:16:05Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814hm:g3814hm_g054941914:05494_1914-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814hm:g3814hm_g054941914:05494_1914-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,1079.1 1613,0.0 1380.6,0.0 1148.2,0.0 -0.0,0.0 0.0,1077.0 1377.2,1078.7 1613,1079.1 1613,1079.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814hm:g3814hm_g054941914:05494_1914-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[514.5,396.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.0566765,39.880857]}},{"type":"Feature","properties":{"resourceCoords":[574.0,396.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.055379,39.881675]}}]}}]}