{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn00419_003.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Berkeley, California | 1911 | 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:gmd436m:g4364m:g4364bm:g4364bm_g00419191102:00419_02_1911-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Berkeley, California | 1911 | sanborn00419_003 p0","metadata":[{"label":"streets","value":"105"},{"label":"intersections","value":"296"}],"created":"2026-09-21T09:33:53Z","modified":"2026-09-21T09:33:53Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g00419191102:00419_02_1911-0000/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g00419191102:00419_02_1911-0000/info.json","type":"ImageService2","height":7796,"width":6620},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6620.0,7796.0 -0.0,7796.0 -0.0,4784.5 -0.0,4189.7 -0.0,3220.6 -0.0,2543.4 -0.0,0.0 6620.0,0.0 6620.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g00419191102:00419_02_1911-0000/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5225.6,3213.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.2499744,37.8522987]}},{"type":"Feature","properties":{"resourceCoords":[5298.6,3674.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.2522968,37.8494319]}}]}}]}