{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn01161_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Norwich, Connecticut | 1897 | key map | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611897:01161_1897-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1897 | sanborn01161_003 p0","metadata":[{"label":"streets","value":"67"},{"label":"intersections","value":"58"}],"created":"2026-09-23T11:29:13Z","modified":"2026-09-23T11:29:13Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611897:01161_1897-0000/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611897:01161_1897-0000/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6452.0,7652.0 -0.0,7652.0 0.0,-0.0 6452.0,-0.0 6452.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611897:01161_1897-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1935.6,4787.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0782629,41.5315415]}},{"type":"Feature","properties":{"resourceCoords":[3837.2,6812.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0830119,41.512636]}}]}}]}