{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn05511_031.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Hudson Co., New-Jersey | 1950 | 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_g05511195004:05511_04_1950-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson Co., New-Jersey | 1950 | sanborn05511_031 p0","metadata":[{"label":"streets","value":"80"},{"label":"intersections","value":"182"}],"created":"2026-09-22T02:01:36Z","modified":"2026-09-22T02:01:36Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814hm:g3814hm_g05511195004:05511_04_1950-0000/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814hm:g3814hm_g05511195004:05511_04_1950-0000","type":"ImageService3","width":1401,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2038.0 -0.0,0.0 1401.0,0.0 1401.0,2038.0 -0.0,2038.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd381m:g3814m:g3814hm:g3814hm_g05511195004:05511_04_1950-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[952.8,1248.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-74.0496002,40.7524079]}},{"type":"Feature","properties":{"resourceCoords":[204.8,1177.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-74.0603695,40.7394088]}}]}}]}