{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn00419_001.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Berkeley, California | 1894 | 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://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004191894:00419_1894-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Berkeley, California | 1894 | sanborn00419_001 p1","metadata":[{"label":"streets","value":"32"},{"label":"intersections","value":"108"}],"created":"2026-09-22T10:09:39Z","modified":"2026-09-22T10:09:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004191894:00419_1894-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004191894:00419_1894-0001/info.json","type":"ImageService2","height":7916,"width":6680},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6680.0,7916.0 -0.0,7916.0 0.0,-0.0 6680.0,-0.0 6680.0,7916.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g004191894:00419_1894-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1598.2,5826.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.2693156,37.8802295]}},{"type":"Feature","properties":{"resourceCoords":[4583.7,6056.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.2676858,37.8666912]}}]}}]}