{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00656_053.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Los Angeles, California | 1950 | 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_g00656195004:00656_04_1950-0000L/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 | 1950 | sanborn00656_053 p0L","metadata":[{"label":"streets","value":"92"},{"label":"intersections","value":"687"}],"created":"2026-09-21T04:50:41Z","modified":"2026-09-21T04:50:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656195004:00656_04_1950-0000L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656195004:00656_04_1950-0000L","type":"ImageService3","width":1409,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2038.0 0.0,0.0 1398.3,0.0 1363.6,57.8 1398.8,75.2 1376.5,112.4 1377.3,158.8 1392.2,167.6 1365.2,207.6 1403.5,229.6 1365.0,284.9 1409.0,310.3 1409.0,368.4 1373.2,415.4 1378.1,418.7 1378.2,461.4 1409.0,482.1 1409.0,558.4 1374.0,605.0 1378.7,607.9 1378.8,661.5 1409.0,680.8 1409.0,735.8 1359.3,802.8 1409.0,831.2 1391.5,862.5 1379.4,860.0 1379.6,934.4 1409.0,942.8 1409.0,1015.1 1366.0,1100.6 1409.0,1107.4 1409.0,1139.8 1390.5,1331.0 1389.3,1654.4 1378.0,1654.4 1377.2,1734.8 1389.7,1734.9 1388.8,1942.3 1409.0,1942.4 1409.0,2038.0 -0.0,2038.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656195004:00656_04_1950-0000L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[691.6,1250.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2685095,34.0056767]}},{"type":"Feature","properties":{"resourceCoords":[618.8,199.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2705643,34.0291832]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656195004:00656_04_1950-0000R/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 | 1950 | sanborn00656_053 p0R","metadata":[{"label":"streets","value":"35"},{"label":"intersections","value":"85"}],"created":"2026-09-21T04:50:41Z","modified":"2026-09-21T04:50:41Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656195004:00656_04_1950-0000R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656195004:00656_04_1950-0000R","type":"ImageService3","width":1411,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6.1,1932.6 7.6,1727.3 -0.0,1727.0 -0.0,1647.3 7.5,1647.6 9.5,1327.5 31.0,1108.0 -0.0,1101.2 -0.0,1071.5 58.8,954.5 -0.0,934.5 -0.0,860.9 11.7,863.9 30.4,834.5 -0.0,815.5 -0.0,777.6 32.8,734.3 29.1,731.7 29.3,684.6 -0.0,664.3 -0.0,602.1 49.8,540.0 29.7,525.6 29.8,487.9 -0.0,466.2 -0.0,414.4 30.1,375.4 30.3,317.8 -0.0,298.8 -0.0,273.4 25.2,237.7 -0.0,221.9 -0.0,196.9 14.4,175.9 -0.0,166.6 -0.0,119.5 21.1,84.7 -0.0,73.5 0.0,44.6 20.8,10.2 0.0,9.4 -0.0,0.0 1411.0,0.0 1411.0,2038.0 -0.0,2038.0 -0.0,2027.1 25.4,2028.1 25.7,1933.5 6.1,1932.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g00656195004:00656_04_1950-0000R/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[86.0,1692.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2477716,33.9957237]}},{"type":"Feature","properties":{"resourceCoords":[104.0,1161.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-118.2474386,34.0077369]}}]}}]}