{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01160_009.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Norwalk, Connecticut | 1958 | key map | mapsnap generated fit (2026-09-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-20"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g01160195802:01160_02_1958-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwalk, Connecticut | 1958 | sanborn01160_009 p0","metadata":[{"label":"streets","value":"218"},{"label":"intersections","value":"141"}],"created":"2026-09-20T22:51:28Z","modified":"2026-09-20T22:51:28Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g01160195802:01160_02_1958-0000/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g01160195802:01160_02_1958-0000/info.json","type":"ImageService2","height":5436,"width":4360},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5436.0 -0.0,-0.0 4360.0,0.0 4360.0,5436.0 -0.0,5436.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g01160195802:01160_02_1958-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2199.0,2654.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.426481,41.1327714]}},{"type":"Feature","properties":{"resourceCoords":[3227.0,2045.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.4031618,41.1451532]}}]}}]}