{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn00378_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Altadena, California | 1908 | 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"},{"label":"pages","value":"2"},{"label":"placed","value":"1"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 1"},{"label":"key map","value":"none"},{"label":"unplaced pages","value":"p1 (tier 1, 34.18786,-118.13943 +/-632m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364am:g4364am_g003781908:00378_1908-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Altadena, California | 1908 | sanborn00378_001 p2","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T17:05:38Z","modified":"2026-09-21T17:05:38Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364am:g4364am_g003781908:00378_1908-0002/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364am:g4364am_g003781908:00378_1908-0002/info.json","type":"ImageService2","height":7652,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7652.0 -0.0,-0.0 6452.0,-0.0 6452.0,7652.0 -0.0,7652.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd436m:g4364m:g4364am:g4364am_g003781908:00378_1908-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1784.0,3168.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.1363876,34.1893679]}},{"type":"Feature","properties":{"resourceCoords":[6688.0,6276.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.1316137,34.1837597]}}]}}]}