{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00489_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Covina, California | 1899 | 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"},{"label":"pages","value":"5"},{"label":"placed","value":"3"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef-snap 3"},{"label":"key map","value":"none"},{"label":"split sheets","value":"2 sheet(s) cut into 4 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 34.09158,-118.27895 +/-107m); p3__2 (tier 2, 34.08720,-117.89005 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covina, California | 1899 | sanborn00489_001 p1 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"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":"2026-10-18T13:05:06Z","modified":"2026-10-18T13:05:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1185.7,150.7 1171.4,30.9 153.1,51.2 57.0,360.2 105.2,619.9 47.2,662.6 31.4,842.6 66.4,1837.0 95.7,1779.6 267.7,1889.0 1557.1,1885.2 1572.2,934.5 1284.1,925.0 1281.8,921.0 1279.1,921.0 1278.7,915.8 1241.5,852.6 1185.7,150.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1262.0,1890.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.88978813599795,34.09029060374215]}},{"type":"Feature","properties":{"resourceCoords":[592.0,556.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.88678405101864,34.09156583925408]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covina, California | 1899 | sanborn00489_001 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:05:06Z","modified":"2026-10-18T13:05:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1479.3,1891.7 36.4,1855.9 28.5,551.5 101.4,478.6 123.1,260.1 764.3,63.0 1471.1,33.5 1541.7,283.4 1511.0,283.6 1510.0,337.0 1521.2,873.1 1523.8,1535.8 1527.7,1843.5 1524.2,1912.0 1482.4,1912.0 1479.3,1891.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1524.0,1528.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.89014386563902,34.08625636785898]}},{"type":"Feature","properties":{"resourceCoords":[1524.0,875.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.89014319677521,34.08746522363299]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covina, California | 1899 | sanborn00489_001 p3 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"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":"2026-10-18T13:05:06Z","modified":"2026-10-18T13:05:06Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"89.1,53.4 98.0,589.4 97.7,1251.7 100.2,1559.3 96.4,1627.8 54.6,1627.6 94.2,1891.5 1135.8,1873.8 1152.5,1327.5 1156.5,1327.5 1156.5,1326.0 1258.4,1326.0 1545.9,1321.8 1589.8,1263.7 1591.0,979.6 1540.2,906.6 1600.2,484.4 1521.6,98.0 1368.8,39.2 130.6,34.3 121.3,1.0 90.3,1.0 89.1,53.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364cm:g4364cm_g004891899:00489_1899-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[93.0,617.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.8901603174609,34.08741748878958]}},{"type":"Feature","properties":{"resourceCoords":[93.0,1887.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.89014916553386,34.085065384159755]}}]}}]}