{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn05627_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Somerville, New-Jersey | 1910 | 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:gmd381m:g3814m:g3814sm:g3814sm_g056271910:05627_1910-0000__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Somerville, New-Jersey | 1910 | sanborn05627_005 p0 [1]","metadata":[{"label":"streets","value":"36"},{"label":"intersections","value":"81"},{"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":"5775.9"}],"created":"2026-10-19T22:42:27Z","modified":"2026-10-19T22:42:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814sm:g3814sm_g056271910:05627_1910-0000__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814sm:g3814sm_g056271910:05627_1910-0000","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613,0.0 0.0,0.0 0.0,790.3 555.2,790.3 555.2,1444.0 1160.4,1444.0 1351.9,1444.0 1349.0,1093.2 1613,1091.0 1613,459.5 1613,231.1 1613,157.2 1613,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814sm:g3814sm_g056271910:05627_1910-0000__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[259.7,220.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-74.618198,40.573661]}},{"type":"Feature","properties":{"resourceCoords":[874.5,369.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-74.60371,40.566144]}}]}}]}