{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn00419_002.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_g00419191101:00419_01_1911-0000__2/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_002 p0 [2]","metadata":[{"label":"streets","value":"147"},{"label":"intersections","value":"504"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"7077.6"},{"label":"split_canvas_h","value":"8217.6"}],"created":"2026-09-21T12:37:54Z","modified":"2026-09-21T12:37:54Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g00419191101:00419_01_1911-0000__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g00419191101:00419_01_1911-0000/info.json","type":"ImageService2","height":7796,"width":6652},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"7077.6,0.0 4145.2,0.0 -0.0,-0.0 0.0,6532.8 1855.9,6527.0 3041.1,7167.3 3055.7,8217.6 6486.1,8217.6 7077.6,8217.6 7077.6,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364bm:g4364bm_g00419191101:00419_01_1911-0000__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3291.9,2976.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.2890801,37.8884675]}},{"type":"Feature","properties":{"resourceCoords":[5772.8,7671.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.2517621,37.866805]}}]}}]}