{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00581_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Half Moon Bay, California | 1911 | 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":"4"},{"label":"placed","value":"3"},{"label":"unplaced","value":"1"},{"label":"fit sources","value":"georef 3"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 2 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 37.46027,-122.43891 +/-142m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Half Moon Bay, California | 1911 | sanborn00581_002 p1 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-21T21:16:50Z","modified":"2026-09-21T21:16:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,858.8 1553.1,858.8 475.1,858.0 475.2,0.0 -0.0,0.0 -0.0,1274.4 101.0,1274.0 101.1,1913.0 1613.0,1913.0 1613.0,858.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[101.0,1656.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4295454,37.4616069]}},{"type":"Feature","properties":{"resourceCoords":[101.0,1274.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4286418,37.4615174]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Half Moon Bay, California | 1911 | sanborn00581_002 p2","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T21:16:50Z","modified":"2026-09-21T21:16:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 1613.0,-0.0 1613.0,104.8 1520.0,105.5 1519.2,1841.4 1613.0,1841.5 1613.0,1913.0 -0.0,1913.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[964.0,1316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4300125,37.4647351]}},{"type":"Feature","properties":{"resourceCoords":[1520.0,106.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4273882,37.4634539]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Half Moon Bay, California | 1911 | sanborn00581_002 p3","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-21T21:16:50Z","modified":"2026-09-21T21:16:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"87.0,185.8 179.6,185.1 179.5,80.8 -0.0,80.9 -0.0,0.0 1092.8,-0.0 1091.2,593.7 1194.8,593.6 1193.2,1248.7 1613.0,1249.8 1613.0,1913.0 87.1,1913.0 87.0,185.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364hm:g4364hm_g005811911:00581_1911-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[87.0,989.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4292418,37.4636337]}},{"type":"Feature","properties":{"resourceCoords":[87.0,1392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4301719,37.4637239]}}]}}]}