{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00768_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Pomona, California | 1895 | mapsnap generated fit (2026-10-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-20"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"22"},{"label":"placed","value":"18"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef-snap 10, georef 8"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"2 sheet(s) cut into 5 panels"},{"label":"unplaced pages","value":"p15 (tier 1, 34.05628,-117.74961 +/-253m); p20__1 (tier 1, 34.05300,-117.74837 +/-100m); p20__3 (tier 1, 34.05466,-117.74795 +/-236m); p8 (tier 1, 34.05900,-117.75619 +/-256m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1567.4,1848.0 1507.2,1882.5 714.5,1795.8 367.3,1820.1 328.1,1884.5 93.7,1847.0 92.5,1912.0 76.4,1912.0 82.2,1680.3 91.2,1680.3 88.8,1244.8 96.0,1244.9 101.0,204.7 187.4,205.4 612.1,209.0 1074.1,218.5 1568.5,222.2 1568.8,664.5 1563.4,671.9 1562.4,1228.7 1569.4,1306.1 1579.9,1306.1 1567.4,1848.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.75154571668472,34.06090653111593]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.74798144591607,34.06101209475728]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.74783138422434,34.05748533059935]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.75139565499299,34.057379766958]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p11","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1535.5,1890.0 985.2,1888.2 977.9,1883.0 540.9,1882.5 480.4,1881.8 110.8,924.2 42.0,922.7 37.8,65.7 90.0,24.2 1029.8,29.9 1561.9,114.5 1610.1,376.6 1612.0,1379.0 1612.0,1499.3 1562.3,1871.8 1612.0,1873.0 1612.0,1883.3 1535.5,1890.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[67.0,905.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7459005,34.0615505]}},{"type":"Feature","properties":{"resourceCoords":[67.0,1877.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7480892,34.0614838]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"79.5,1885.2 1542.8,1880.8 1591.2,1479.0 1566.6,160.3 1563.7,160.3 1564.9,29.5 1536.5,1.0 689.5,1.0 634.9,44.2 306.2,44.4 71.7,41.6 70.5,192.6 67.7,542.0 81.0,1519.6 79.5,1885.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1063.0,534.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7588010099085,34.0557919848746]}},{"type":"Feature","properties":{"resourceCoords":[1063.0,39.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.75770148480831,34.055818593297104]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p13","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.73"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"130.8,1856.9 131.9,1912.0 1503.4,1912.0 1502.4,1875.4 1582.7,1772.3 1579.1,1689.1 1576.0,1193.7 1561.3,730.5 1589.0,644.5 1588.5,471.6 1564.7,356.7 1562.3,178.7 1542.3,179.2 1332.2,1.0 123.9,1.0 28.5,728.8 70.9,727.6 63.1,1223.2 76.0,1223.0 77.7,1463.5 84.4,1800.5 130.8,1856.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[571.0,1223.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7566988,34.0576517]}},{"type":"Feature","properties":{"resourceCoords":[76.0,1223.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7577715,34.0576428]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p14","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.0,911.5 1.0,1702.5 20.8,1722.2 79.8,1723.2 78.1,1771.7 1531.5,1772.3 1525.4,1759.9 1550.7,493.7 1535.0,493.7 1540.8,265.9 1050.7,266.8 574.7,258.9 87.4,262.3 78.1,736.3 79.4,816.0 1.0,911.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[547.0,1725.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7533619,34.0550111]}},{"type":"Feature","properties":{"resourceCoords":[1044.0,1725.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7522372,34.0550448]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.40"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"51.8,1885.3 32.1,41.0 1192.3,23.0 1490.5,53.7 1534.5,47.6 1583.8,107.8 1555.3,1348.3 1612.0,1354.5 1612.0,1392.7 1506.5,1390.5 1507.0,1453.2 1014.0,1680.6 1012.1,1526.5 669.5,1887.3 51.8,1885.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.74376146509297,34.05713751557367]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.74365831216883,34.054154343845006]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.74789886755923,34.05405227381012]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.74800202048337,34.05703544553879]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1176.2,1874.9 1176.3,1851.7 1571.7,1728.8 1571.8,1724.1 1582.5,1725.0 1565.2,1057.0 1558.0,493.9 1563.8,267.1 1570.3,14.8 1510.7,14.3 1497.1,1.0 151.7,1.0 129.7,23.1 1.0,22.1 1.0,25.0 59.7,23.8 13.1,676.3 47.5,1825.0 133.1,1885.4 357.9,1898.7 962.4,1842.3 1176.2,1874.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1085.0,495.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.75547809663468,34.054066747179355]}},{"type":"Feature","properties":{"resourceCoords":[591.0,495.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7565853316947,34.054042070060646]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p18","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.35"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"19.8,272.0 7.7,505.5 1.0,1010.8 1.0,1774.8 498.8,1832.2 499.0,1820.2 1002.5,1811.8 1003.3,1795.2 1499.2,1856.8 1507.7,1912.0 1508.3,1895.1 1584.7,1869.2 1550.0,398.4 1590.9,190.7 1543.2,88.4 30.6,62.6 19.8,272.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1014.0,1552.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7521117,34.0523046]}},{"type":"Feature","properties":{"resourceCoords":[1507.0,1552.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7510407,34.0523515]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p19","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"200.3,1912.0 74.6,1515.2 69.9,1515.2 111.7,1016.5 100.0,1016.6 76.5,526.0 60.2,525.9 105.1,40.5 158.7,30.6 1215.2,38.9 1556.8,112.0 1599.3,171.3 1577.2,1879.3 226.3,1894.1 223.7,1912.0 200.3,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1293.0,529.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7520551,34.0495878]}},{"type":"Feature","properties":{"resourceCoords":[307.0,529.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7521023,34.0514097]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0020__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p20 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"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":"4848.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0020__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1053.1,1118.8 1015.2,1118.3 1018.8,1012.6 956.4,1012.3 737.0,515.4 890.3,515.5 536.2,167.4 532.0,410.8 506.0,444.3 333.2,528.5 309.2,540.1 262.1,567.5 34.0,601.6 68.5,1853.5 359.2,1895.2 959.3,1884.1 1053.1,1118.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0020__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[529.0,1013.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.74783810342483,34.05423807905801]}},{"type":"Feature","properties":{"resourceCoords":[529.0,38.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.74793042823018,34.056036765140995]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p2 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.86"},{"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":"3032.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"208.8,52.0 210.9,52.7 120.7,607.2 140.5,1077.2 19.0,1378.2 27.9,1667.4 118.8,1828.1 574.1,1830.0 653.6,1167.6 607.0,1168.0 633.9,643.5 692.3,642.7 704.3,32.1 501.6,34.9 209.0,39.0 208.8,52.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.75211010756819,34.06494488310359]}},{"type":"Feature","properties":{"resourceCoords":[758.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.75207706932822,34.063530159526564]}},{"type":"Feature","properties":{"resourceCoords":[758.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.75638877120616,34.063461114675306]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-117.75642180944612,34.064875838252334]}},{"type":"Feature","properties":{"resourceCoords":[209.0,39.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7521889,34.0645534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p2 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2553.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3898.4"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1567.0,1870.3 1563.9,1104.6 1566.5,1104.6 1612.0,1104.1 1612.0,1089.2 1612.0,1049.3 1568.0,1049.8 1581.5,699.9 1582.1,43.0 976.3,94.3 859.7,377.4 854.5,597.0 718.1,791.7 665.1,1794.3 982.9,1889.2 983.2,1876.0 1279.8,1873.1 1567.0,1870.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1573.0,67.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.74813822154664,34.06354607955114]}},{"type":"Feature","properties":{"resourceCoords":[1012.2,1879.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.75219414829049,34.064499856449125]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1577.4,66.3 960.6,13.9 415.0,61.6 365.5,23.8 51.3,93.5 24.3,1833.6 1.0,1834.4 1.0,1865.0 83.2,1865.9 358.4,1878.4 889.5,1877.3 889.2,1912.0 1327.2,1912.0 1326.7,1882.4 1490.9,1880.8 1426.1,1400.4 1400.5,1400.2 1434.5,899.0 1440.0,898.9 1577.4,66.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[369.0,898.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.75901990333384,34.06215493770939]}},{"type":"Feature","properties":{"resourceCoords":[1565.0,898.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7563351722651,34.06222652852742]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p4","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"231.6,1876.6 163.8,1385.5 137.6,1385.4 170.9,872.7 176.6,872.6 314.5,20.6 386.5,26.5 386.8,4.3 1066.0,92.6 1066.0,44.8 1604.2,77.7 1605.0,300.6 1606.5,805.5 1562.1,917.4 1568.0,1385.0 1568.9,1861.3 1005.9,1872.0 937.0,1912.0 64.3,1912.0 63.6,1878.8 231.6,1876.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[60.0,1385.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7568386,34.0612794]}},{"type":"Feature","properties":{"resourceCoords":[1568.0,1385.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7535287,34.0613594]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"121.0,69.4 744.5,85.9 745.0,168.2 1516.1,167.1 1516.1,169.7 1518.7,793.5 1575.2,793.4 1577.8,1079.7 1584.2,1453.9 1595.0,1786.4 1169.5,1786.8 1073.6,1787.0 573.5,1784.2 90.8,1784.2 88.5,1310.4 81.2,845.3 125.0,733.8 122.0,231.6 121.0,69.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[744.0,804.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.75211133274658,34.06231645758151]}},{"type":"Feature","properties":{"resourceCoords":[1537.0,1313.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.75033207002784,34.061423887864635]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p6","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.59"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1570.2,1848.0 1570.4,1404.0 1564.5,929.1 1505.2,929.7 1124.1,1.0 1056.3,1.0 1056.5,10.7 660.0,32.8 602.4,95.6 44.3,37.3 30.6,914.5 27.3,914.8 31.9,1549.1 21.5,1887.0 318.9,1881.7 618.0,1877.0 892.5,1871.6 1251.3,1861.7 1570.2,1848.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[618.0,1877.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7502777,34.0623756]}},{"type":"Feature","properties":{"resourceCoords":[618.0,933.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7481053,34.0624037]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.74"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1543.2,47.0 1060.5,31.6 1061.0,72.9 573.4,1.0 66.3,1.0 70.7,536.2 59.7,814.2 59.3,898.2 28.4,898.4 66.8,1885.5 1556.6,1876.5 1557.0,1511.2 1540.8,534.4 1542.5,185.3 1543.2,47.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1527.0,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.75780916781997,34.05767186380318]}},{"type":"Feature","properties":{"resourceCoords":[1527.0,542.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7589008671789,34.05764815644289]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Pomona, California | 1895 | sanborn00768_004 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T02:12:59Z","modified":"2026-10-20T02:12:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"529.7,1725.8 366.1,1912.0 80.0,1912.0 79.8,1833.6 39.2,1764.0 27.7,1207.7 28.3,728.2 31.7,231.6 31.8,222.2 1073.9,219.1 1073.8,226.3 1510.2,220.4 1510.3,229.5 1515.5,728.8 1511.6,1213.8 1519.4,1710.3 1067.5,1716.7 984.2,1688.2 815.6,1685.8 703.2,1707.0 529.6,1706.3 529.7,1725.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364pm:g4364pm_g007681895:00768_1895-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1061.0,718.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.7523451200786,34.05861626271414]}},{"type":"Feature","properties":{"resourceCoords":[1061.0,1225.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-117.75347149996183,34.05859061294361]}}]}}]}