{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00820_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"San Leandro, California | 1907 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"15"},{"label":"placed","value":"12"},{"label":"unplaced","value":"3"},{"label":"fit sources","value":"georef-snap 9, georef 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"1 sheet(s) cut into 1 panels"},{"label":"unplaced pages","value":"p10 (tier 1, 37.72096,-122.15592 +/-261m); p14 (tier 2, 37.72397,-122.16407 +/-100m); p1__1 (tier 1, 37.72677,-122.15270 +/-122m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"34.1,1912.0 34.2,1897.1 1575.7,1890.5 1608.2,180.2 1612.0,180.2 1580.1,163.8 1082.5,163.0 559.3,171.6 5.9,162.8 1.0,171.3 1.0,1675.8 12.8,1688.2 13.5,1803.7 13.8,1912.0 34.1,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1085.0,1777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.15611802805927,37.71805403266171]}},{"type":"Feature","properties":{"resourceCoords":[30.0,1777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.15726413935316,37.71978440315895]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p12","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.39"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1479.1,1869.5 1487.5,1859.1 1580.5,1874.3 1612.0,1754.4 1612.0,124.5 1106.9,121.5 488.7,112.4 489.4,103.9 38.5,116.2 71.6,998.5 19.9,1257.3 92.2,1648.6 36.2,1787.5 1.0,1801.8 1.0,1802.2 177.0,1801.9 476.6,1801.2 947.9,1810.0 1132.5,1801.2 1168.2,1814.7 1476.6,1776.2 1479.1,1869.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[519.0,1802.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.1636758,37.7229752]}},{"type":"Feature","properties":{"resourceCoords":[519.0,113.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.1602516,37.7243962]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p13","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.53"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1601.3,274.1 1580.8,274.1 1580.2,164.8 1579.4,48.1 1566.4,34.6 1566.3,1.0 1.0,1.0 1.0,1723.9 33.2,1739.0 60.4,1877.7 1593.7,1864.3 1601.3,275.1 1601.3,274.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1580.0,1796.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.1606913,37.7184055]}},{"type":"Feature","properties":{"resourceCoords":[1580.0,119.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.1572436,37.7198278]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.0,184.6 1572.7,230.6 1521.2,573.8 1611.5,1062.3 1588.4,1280.9 1508.3,1335.3 1576.6,1464.4 1525.3,1526.6 1584.8,1774.8 1531.2,1885.3 423.5,1885.5 118.4,1780.8 45.1,1690.2 21.3,1437.2 97.0,1198.6 59.5,1103.2 138.2,1006.7 66.5,883.9 129.8,770.6 61.4,715.8 41.6,307.9 83.5,100.0 164.3,80.3 353.4,85.1 643.4,92.2 1099.3,113.1 1278.2,109.3 1312.5,123.4 1612.0,94.2 1612.0,172.2 1612.0,184.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[648.0,95.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.1637196572187,37.72303387003753]}},{"type":"Feature","properties":{"resourceCoords":[529.0,1123.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.16597812247274,37.722289321560325]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1582.5,1890.5 1576.7,1890.5 1086.5,1898.7 686.5,1905.3 286.4,1912.0 109.3,1912.0 126.3,1873.1 46.6,1838.5 13.0,1667.3 58.1,1240.8 9.7,797.9 52.9,264.2 121.5,218.8 128.8,107.0 268.0,100.8 268.2,32.3 1032.8,1.1 1607.6,58.2 1611.8,1872.2 1582.5,1890.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1082.0,958.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.14540758435454,37.72686571771001]}},{"type":"Feature","properties":{"resourceCoords":[1082.0,14.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.14329362353452,37.72743049405124]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1596.1,40.1 1584.6,1.0 119.4,1.0 34.3,187.6 47.5,534.2 120.8,606.0 44.2,692.7 87.2,806.8 12.3,1144.8 25.8,1810.8 80.7,1891.2 558.4,1894.2 559.4,1912.0 568.4,1887.5 1110.0,1890.7 1577.9,1896.9 1579.0,1629.5 1586.1,1194.0 1587.4,966.8 1596.1,40.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[570.0,1885.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.15215757326443,37.72602664905119]}},{"type":"Feature","properties":{"resourceCoords":[1595.0,1885.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.15133773477154,37.72420717861505]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1579.8,1847.7 1023.4,1899.3 1023.5,1883.7 594.2,1912.0 512.6,1912.0 512.9,1895.1 4.8,1890.0 5.8,1618.8 12.9,1177.2 14.2,946.7 22.9,7.0 683.1,52.9 1056.0,15.2 1220.8,112.0 1279.5,32.6 1598.6,60.8 1610.7,697.0 1545.3,881.9 1572.8,1215.3 1521.3,1274.2 1572.4,1346.2 1580.2,1835.9 1579.8,1847.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.14719906221694,37.725416986220864]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.14593623882291,37.72257354737311]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.15016985208916,37.72138055811528]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.15143267548319,37.72422399696303]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p5","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"397.1,1890.0 276.8,1794.0 143.8,1778.2 206.2,1599.9 83.5,1510.8 26.9,1298.5 15.4,694.1 130.0,410.9 129.7,126.0 388.6,24.2 950.5,90.2 1061.6,36.7 1577.1,49.0 1575.0,793.2 1569.9,1107.3 1568.6,1519.0 1514.2,1547.5 1472.3,1569.4 1612.0,1626.6 1612.0,1635.9 1612.0,1679.7 1046.5,1810.5 1041.8,1781.0 876.5,1813.1 528.2,1861.8 532.6,1885.4 397.1,1890.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1061.0,1333.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.1558787,37.7260158]}},{"type":"Feature","properties":{"resourceCoords":[1061.0,809.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.1547177,37.7263374]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1556.0,766.6 1567.5,812.8 1601.7,869.7 1500.0,921.9 1579.2,1692.3 1612.0,1687.6 1612.0,1912.0 443.4,1912.0 4.7,1716.3 19.4,1708.6 20.8,1298.0 25.9,984.7 28.2,242.6 20.0,56.5 28.9,31.7 577.1,32.0 1050.8,35.9 1560.7,40.6 1560.5,62.9 1612.0,59.5 1612.0,76.5 1560.5,83.2 1556.0,766.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1046.0,23.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.15135327255281,37.72424633241192]}},{"type":"Feature","properties":{"resourceCoords":[50.0,23.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.1521288174835,37.72599634408377]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"21.2,1817.5 1342.0,1798.8 1392.2,1797.2 1414.8,1856.5 1612.0,1865.5 1612.0,1823.0 1566.5,1797.8 1593.5,1369.8 1577.0,1366.8 1565.2,1365.0 1585.4,800.0 1601.1,802.1 1612.0,628.0 1612.0,282.1 927.0,185.7 879.1,191.0 817.5,217.4 778.2,108.7 1.0,84.3 1.0,601.0 2.9,737.5 3.6,1292.8 21.2,1817.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.15472190210029,37.72242512827399]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.1513820348275,37.72377096163758]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.14937827506293,37.720615695096875]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.15271814233571,37.71926986173329]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"33.8,1863.3 33.2,536.4 32.2,485.9 92.1,464.0 103.8,266.0 61.7,264.5 130.7,144.1 316.0,74.4 588.9,217.2 1098.2,50.2 1485.6,53.0 1611.3,477.0 1569.3,1063.3 1487.9,1187.4 1540.1,1356.4 1493.3,1398.5 1492.1,1764.5 1589.2,1832.0 1479.7,1883.1 567.4,1878.8 567.5,1862.3 535.3,1862.3 33.8,1863.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.14899675797051,37.72108937685001]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.14726978416235,37.71845950733129]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.1511851650371,37.716827931954064]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.15291213884527,37.719457801472785]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Leandro, California | 1907 | sanborn00820_004 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.46"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T10:37:12Z","modified":"2026-10-19T10:37:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"24.7,1773.3 461.7,1767.7 460.9,1776.0 1059.5,1793.7 1549.7,1803.8 1547.5,1912.0 1612.0,1912.0 1612.0,285.9 1476.1,263.8 1078.4,1.0 1073.5,1.0 1033.2,13.1 988.5,27.9 1115.9,106.6 1107.2,158.8 531.5,197.3 531.8,167.5 364.6,172.7 15.3,164.9 15.7,188.9 20.4,189.5 27.6,656.6 192.1,986.5 19.0,1437.8 24.7,1773.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g008201907:00820_1907-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.157141004744,37.72679840898228]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.15532092793131,37.7241494638043]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.15926499061992,37.72243005129001]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.16108506743261,37.72507899646799]}}]}}]}