{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00783_006.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Redwood City, California | 1919 | key map | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364rm:g4364rm_g007831919:00783_1919-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Redwood City, California | 1919 | sanborn00783_006 p1","metadata":[{"label":"streets","value":"96"},{"label":"intersections","value":"299"}],"created":"2026-10-19T09:50:49Z","modified":"2026-10-19T09:50:49Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364rm:g4364rm_g007831919:00783_1919-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364rm:g4364rm_g007831919:00783_1919-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1913.0 0.0,0.0 1613.0,0.0 1613.0,1913.0 0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364rm:g4364rm_g007831919:00783_1919-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[905.8,898.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.2330272,37.4762201]}},{"type":"Feature","properties":{"resourceCoords":[664.7,604.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.2316784,37.4871437]}}]}}]}