{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn05408_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Atlantic City, New-Jersey | 1949 | key map | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814am:g3814am_g054081949:05408_1949-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Atlantic City, New-Jersey | 1949 | sanborn05408_005 p0","metadata":[{"label":"streets","value":"121"},{"label":"intersections","value":"386"}],"created":"2026-09-21T04:37:02Z","modified":"2026-09-21T04:37:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814am:g3814am_g054081949:05408_1949-0000/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814am:g3814am_g054081949:05408_1949-0000","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 0.0,-0.0 1660.0,0.0 1660.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814am:g3814am_g054081949:05408_1949-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[888.6,1111.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-74.4443169,39.3705699]}},{"type":"Feature","properties":{"resourceCoords":[1481.7,1563.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-74.412649,39.3664092]}}]}}]}