{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn05430_002.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Bridgeton, New-Jersey | 1891 | 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:g3814bm:g3814bm_g054301891:05430_1891-0000__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bridgeton, New-Jersey | 1891 | sanborn05430_002 p0 [1]","metadata":[{"label":"streets","value":"38"},{"label":"intersections","value":"71"},{"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":"8074.1"}],"created":"2026-09-22T22:42:52Z","modified":"2026-09-22T22:42:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814bm:g3814bm_g054301891:05430_1891-0000__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814bm:g3814bm_g054301891:05430_1891-0000","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,1913 1613,235.5 1329.0,243.4 1247.5,245.3 1246.6,224.5 1239.3,0.0 1152.6,0.0 1037.8,0.0 0.0,0.0 -0.0,1913 1613,1913\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814bm:g3814bm_g054301891:05430_1891-0000__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[692.4,1763.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.228913,39.422195]}},{"type":"Feature","properties":{"resourceCoords":[737.7,1192.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-75.228758,39.431776]}}]}}]}