{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03620_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Laurel, Maryland | 1923 | 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:gmd384m:g3844m:g3844lm:g3844lm_g036201923:03620_1923-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Laurel, Maryland | 1923 | sanborn03620_005 p1","metadata":[{"label":"streets","value":"24"},{"label":"intersections","value":"49"}],"created":"2026-09-23T11:29:30Z","modified":"2026-09-23T11:29:30Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844lm:g3844lm_g036201923:03620_1923-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844lm:g3844lm_g036201923:03620_1923-0001/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:gmd384m:g3844m:g3844lm:g3844lm_g036201923:03620_1923-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2459.8,2636.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.850851,39.102387]}},{"type":"Feature","properties":{"resourceCoords":[2459.8,2474.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.85014,39.103092]}}]}}]}