{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00656_021.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Los Angeles, California | 1919 | key map | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656191910:00656_10_1919-0000a/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 | 1919 | sanborn00656_021 p0a","metadata":[{"label":"streets","value":"67"},{"label":"intersections","value":"254"}],"created":"2026-10-18T03:31:22Z","modified":"2026-10-18T03:31:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656191910:00656_10_1919-0000a/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656191910:00656_10_1919-0000a","type":"ImageService3","width":1423,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,2038.0 0.0,0.0 1423.0,0.0 1423.0,2038.0 0.0,2038.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656191910:00656_10_1919-0000a/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1161.5,1494.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.3489649,34.0998112]}},{"type":"Feature","properties":{"resourceCoords":[995.7,1899.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.3563691,34.0836904]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656191910:00656_10_1919-0000b/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 | 1919 | sanborn00656_021 p0b","metadata":[{"label":"streets","value":"101"},{"label":"intersections","value":"319"}],"created":"2026-10-18T03:31:22Z","modified":"2026-10-18T03:31:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656191910:00656_10_1919-0000b/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656191910:00656_10_1919-0000b","type":"ImageService3","width":1423,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,2038.0 0.0,0.0 1423.0,0.0 1423.0,2038.0 0.0,2038.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656191910:00656_10_1919-0000b/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1116.5,1476.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2839653,34.1009066]}},{"type":"Feature","properties":{"resourceCoords":[498.1,1507.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.313641,34.0993144]}}]}}]}