{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00497_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Daly City, California | 1918 | 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":"9"},{"label":"placed","value":"9"},{"label":"unplaced","value":"0"},{"label":"fit sources","value":"georef 5, georef-snap 3, georef-street 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"1 sheet(s) cut into 1 panels"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Daly City, California | 1918 | sanborn00497_002 p1 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2506.8"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"5145.2"}],"created":"2026-10-18T23:46:07Z","modified":"2026-10-18T23:46:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"55.9,1912.0 80.6,1912.0 139.8,1900.3 1251.3,1911.9 1591.5,1877.3 1591.0,1383.3 1566.8,1252.6 1531.5,1241.4 1523.4,1073.3 1153.2,1075.0 1046.2,1025.0 965.3,1026.4 71.7,666.8 71.1,656.0 68.2,654.8 64.5,1029.4 61.8,1212.3 61.8,1640.5 58.2,1640.8 55.9,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[577.0,1413.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.44632504701215,37.70657067987206]}},{"type":"Feature","properties":{"resourceCoords":[1593.0,1413.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.44201158595227,37.708036746737974]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Daly City, California | 1918 | sanborn00497_002 p2","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T23:46:07Z","modified":"2026-10-18T23:46:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"130.0,1727.4 132.1,1723.3 218.8,1593.6 234.1,1495.9 240.0,1408.2 266.3,1257.2 254.7,1255.2 94.0,89.5 837.2,91.0 1245.0,33.6 1334.1,75.4 1421.5,1319.6 1400.0,1291.0 1391.2,1448.2 1187.5,1448.5 1096.4,1556.2 1004.0,1682.0 130.0,1727.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[811.0,1358.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.462471,37.7060563]}},{"type":"Feature","properties":{"resourceCoords":[875.0,305.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4623261,37.7080078]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Daly City, California | 1918 | sanborn00497_002 p3","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T23:46:07Z","modified":"2026-10-18T23:46:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"50.7,1703.1 494.3,1756.1 518.7,1645.4 586.7,1646.0 569.4,1727.7 849.5,1710.0 843.4,1745.3 847.9,1866.2 896.1,1865.0 1207.5,1858.5 1229.2,1864.8 1432.7,1596.7 1302.4,1523.5 1316.3,954.7 1322.9,954.3 1377.5,1.0 1169.0,1.0 1076.8,109.6 982.2,237.7 91.2,282.7 76.6,311.1 50.0,512.0 47.6,947.9 50.0,1493.0 50.7,1703.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[50.0,1493.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.464149,37.7031692]}},{"type":"Feature","properties":{"resourceCoords":[50.0,512.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.464157,37.7049522]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Daly City, California | 1918 | sanborn00497_002 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T23:46:07Z","modified":"2026-10-18T23:46:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"216.4,1876.7 632.7,1874.7 698.6,1877.6 1428.6,1849.4 1428.8,1854.0 1612.0,1844.5 1584.0,1834.5 1612.0,759.2 1612.0,209.6 1403.2,215.6 1355.2,217.2 1349.8,96.8 1355.7,61.6 1076.9,81.5 1093.3,1.0 1025.6,1.0 1002.4,110.3 560.3,61.2 560.5,82.2 36.9,435.6 40.8,884.7 140.2,885.0 206.5,1876.7 216.4,1876.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[562.0,884.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.46415032407108,37.701285120436324]}},{"type":"Feature","properties":{"resourceCoords":[203.0,1862.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.46498880352044,37.699502558994176]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Daly City, California | 1918 | sanborn00497_002 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T23:46:07Z","modified":"2026-10-18T23:46:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"54.9,1061.2 69.0,1061.3 63.9,55.0 487.3,57.5 554.4,61.2 1297.1,40.4 1297.3,45.1 1491.1,37.1 1590.4,65.4 1594.3,1876.7 106.1,1875.1 102.1,1912.0 79.7,1912.0 54.9,1061.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[58.0,1054.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.46495742664632,37.697682597628024]}},{"type":"Feature","properties":{"resourceCoords":[488.0,69.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4639956964135,37.699455277264654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Daly City, California | 1918 | sanborn00497_002 p6","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T23:46:07Z","modified":"2026-10-18T23:46:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"45.5,1811.3 13.6,1455.5 13.7,1396.5 34.9,1150.2 17.4,1009.8 54.7,947.2 70.7,171.8 96.7,153.4 97.3,57.4 285.8,40.2 1231.3,20.4 1293.9,54.0 1452.3,55.0 1531.2,646.7 1537.2,647.8 1523.5,724.3 1520.3,768.8 1512.3,818.3 1468.0,883.9 1459.7,900.1 1446.2,1000.0 1444.3,1216.9 1444.8,1488.1 1444.8,1603.2 1181.2,1777.0 1181.1,1824.3 914.2,1827.8 914.2,1825.5 699.4,1847.5 699.6,1909.0 464.7,1835.9 14.1,1822.6 14.0,1814.0 45.5,1811.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[909.0,330.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4666567,37.707387]}},{"type":"Feature","properties":{"resourceCoords":[915.0,1485.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.466595,37.7031683]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Daly City, California | 1918 | sanborn00497_002 p7","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"40"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T23:46:07Z","modified":"2026-10-18T23:46:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1572.2,1853.0 1508.9,1882.5 809.9,1860.8 553.2,1889.4 523.6,1863.2 493.7,1896.6 423.0,1900.0 58.8,1846.3 16.3,1373.9 51.8,905.6 17.6,217.6 59.2,72.7 313.9,50.7 314.0,59.4 767.8,71.8 1004.4,144.9 1004.1,83.1 1220.3,60.5 1220.4,62.8 1489.1,58.7 1489.0,237.1 1539.1,237.6 1568.0,737.0 1573.0,737.0 1576.4,1234.8 1569.4,1234.8 1582.4,1655.7 1593.5,1656.2 1572.2,1853.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1133.0,737.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4669755,37.6994687]}},{"type":"Feature","properties":{"resourceCoords":[1573.0,737.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.464958,37.6994757]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Daly City, California | 1918 | sanborn00497_002 p8","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T23:46:07Z","modified":"2026-10-18T23:46:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"108.8,1191.6 105.5,1191.8 96.2,1472.6 160.2,1509.2 58.6,1640.8 48.0,1637.6 1.0,1638.2 1.0,1645.0 5.7,1805.3 1.0,1805.5 1.0,1843.3 516.1,1875.0 1612.0,1859.8 1612.0,1759.3 1603.7,1714.7 1589.3,1716.1 1593.3,1563.5 1612.0,1555.7 1612.0,1523.7 1529.7,1384.5 1376.3,1028.2 1305.8,848.2 1232.2,669.5 1159.8,489.0 1133.1,429.2 1328.0,225.0 1458.8,170.2 1446.5,156.6 1485.6,139.7 1536.3,70.2 1282.5,18.8 127.9,34.2 117.9,29.4 155.7,656.1 144.9,641.6 108.8,1191.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4618021,37.7085378]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4542978,37.7086095]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.45419030000001,37.7015681]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4616946,37.7014964]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Daly City, California | 1918 | sanborn00497_002 p9","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"37"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T23:46:07Z","modified":"2026-10-18T23:46:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"619.8,6.8 545.3,51.6 502.3,52.0 508.3,69.5 365.1,69.1 103.4,182.5 104.7,248.7 101.1,445.2 99.4,640.4 94.3,835.6 97.0,1227.7 118.8,1389.6 106.2,1419.4 85.7,1419.3 22.0,1559.8 36.0,1564.1 25.0,1614.2 1.0,1671.0 1.0,1708.2 17.6,1715.0 69.4,1753.7 77.5,1846.2 536.1,1832.3 997.7,1876.3 999.8,1853.0 1350.5,1836.4 1524.3,1863.8 1563.3,1848.5 1579.0,1675.5 1555.7,1675.1 1559.6,1402.8 1563.2,1402.5 1565.8,972.6 1569.6,789.0 1575.6,412.9 1578.5,414.1 1562.8,82.6 1489.2,38.3 1484.2,68.4 1439.7,40.9 1236.5,89.6 1041.5,36.7 925.1,62.6 649.6,27.2 619.8,6.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364dm:g4364dm_g004971918:00497_1918-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1055.0,789.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.451373,37.706371]}},{"type":"Feature","properties":{"resourceCoords":[1569.0,789.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.449204,37.7071204]}}]}}]}