{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00656_065.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Los Angeles, California | 1949 | 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://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656194915:00656_15_1949-0000a__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Los Angeles, California | 1949 | sanborn00656_065 p0a [1]","metadata":[{"label":"streets","value":"93"},{"label":"intersections","value":"315"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6054.7"},{"label":"split_canvas_h","value":"8572.7"}],"created":"2026-09-21T06:32:52Z","modified":"2026-09-21T06:32:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656194915:00656_15_1949-0000a__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656194915:00656_15_1949-0000a","type":"ImageService3","width":1406,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 0.0,2038 1340.6,2038 1340.6,2038 1185.6,1916.2 1194.0,1539.4 1406,1543.7 1406,0.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656194915:00656_15_1949-0000a__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[478.1,474.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2414069,34.0232373]}},{"type":"Feature","properties":{"resourceCoords":[1031.5,2018.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2278107,33.9901777]}}]}}]}