{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn05571_009.2.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Newark, New-Jersey | 1929 | 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://tile.loc.gov/image-services/iiif/service:gmd:gmd381m:g3814m:g3814nm:g3814nm_g05571192901:05571_01_1929-0000b__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Newark, New-Jersey | 1929 | sanborn05571_009.2 p0b [1]","metadata":[{"label":"streets","value":"106"},{"label":"intersections","value":"199"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6094.4"},{"label":"split_canvas_h","value":"8572.7"}],"created":"2026-09-21T05:15:05Z","modified":"2026-09-21T05:15:05Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd381m:g3814m:g3814nm:g3814nm_g05571192901:05571_01_1929-0000b__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd381m:g3814m:g3814nm:g3814nm_g05571192901:05571_01_1929-0000b/info.json","type":"ImageService2","height":8152,"width":5664},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 0.0,8572.7 5233.0,8572.7 5233.0,6524.1 6094.4,6528.3 6094.4,0.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd381m:g3814m:g3814nm:g3814nm_g05571192901:05571_01_1929-0000b__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1508.8,3214.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-74.1667856,40.7255658]}},{"type":"Feature","properties":{"resourceCoords":[3356.6,2605.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-74.1450364,40.7252699]}}]}}]}