{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00813_010.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"San Francisco, California | 1899 | mapsnap generated fit (2026-10-17)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-17"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"126"},{"label":"placed","value":"117"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 75, georef-snap 40, snap:1 1, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"7 sheet(s) cut into 15 panels"},{"label":"unplaced pages","value":"p267__1 (tier 1, 37.80664,-122.42848 +/-171m); p267__2 (tier 1, 37.76657,-122.42954 +/-138m); p300 (tier 2, 37.80547,-122.43396 +/-100m); p325 (tier 1, 37.78646,-122.42328 +/-241m); p335__1 (tier 1, 37.78518,-122.43645 +/-215m); p346 (tier 1, 37.80594,-122.44117 +/-228m); p347__1 (tier 1, 37.77130,-122.42455 +/-156m); p347__3 (tier 2, 37.77188,-122.42749 +/-847m); p367 (tier 2, 37.80596,-122.44489 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0251/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p251","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0251/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0251","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1332.7,1797.1 1335.2,1950.6 1247.5,1951.0 581.5,1890.8 444.6,1816.7 182.3,1373.1 129.7,875.1 166.3,216.8 1327.6,211.2 1332.7,1797.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0251/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[726.0,1028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42103011834648,37.77522879488336]}},{"type":"Feature","properties":{"resourceCoords":[1306.0,1028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4212086455876,37.776123693054956]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0252/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p252","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0252/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0252","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1316.2,1753.3 1324.8,1816.5 1263.0,1916.2 806.5,1969.1 152.9,1907.3 152.6,1899.2 150.7,1751.0 152.0,219.0 1317.3,221.9 1316.2,1753.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0252/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[731.0,1035.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.421351,37.7770933]}},{"type":"Feature","properties":{"resourceCoords":[152.0,219.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4228096,37.7759583]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0253/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p253","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.74"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0253/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0253","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1323.1,1857.4 632.5,1951.8 154.3,1841.7 146.3,1777.2 169.3,215.4 379.4,219.9 1360.6,233.7 1334.2,1796.4 1327.5,1858.4 1323.1,1857.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0253/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[160.0,1030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42157230700366,37.77802867351177]}},{"type":"Feature","properties":{"resourceCoords":[1316.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42033319859074,37.78006210908173]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0254/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p254","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0254/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0254","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"150.0,200.0 149.3,1759.2 143.7,1821.2 771.1,1955.2 1271.6,1888.8 1338.5,1813.5 1336.7,201.8 1347.2,201.8 1388.8,22.1 1178.0,23.0 1179.0,1.0 809.1,1.0 804.7,5.7 849.0,7.0 848.0,24.0 787.9,23.7 742.4,72.2 742.5,200.9 694.3,200.8 150.0,200.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0254/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[150.0,1032.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4219112,37.779892]}},{"type":"Feature","properties":{"resourceCoords":[150.0,200.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4235632,37.7796841]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0255/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p255","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0255/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0255","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"726.5,223.0 1318.7,232.6 1305.6,1061.2 1294.3,1902.0 1238.3,1893.8 763.8,1948.0 108.7,1824.3 133.1,214.5 143.5,214.8 188.0,35.9 12.0,33.8 27.2,18.9 34.0,17.0 34.8,11.4 192.9,16.2 315.0,21.0 565.9,22.1 726.6,218.7 726.5,223.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0255/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[136.0,1030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42231928444744,37.78177622961586]}},{"type":"Feature","properties":{"resourceCoords":[136.0,207.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4239507934063,37.781549393100335]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0256/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p256","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0256/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0256","type":"ImageService3","width":1445,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1320.9,224.1 1412.9,223.4 1331.8,560.0 1320.7,673.1 1322.0,1048.5 1329.3,1817.2 1326.9,1926.1 1263.3,1906.3 723.2,1968.0 141.7,1893.4 135.8,1055.0 132.1,228.8 1320.9,224.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0256/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[419.0,1036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4227907906389,37.784059118135254]}},{"type":"Feature","properties":{"resourceCoords":[1309.0,1036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4230660519626,37.78546234404623]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0257/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p257","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0257/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0257","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1299.8,215.1 1302.4,1872.1 1036.1,1976.4 451.1,1992.7 136.2,1893.1 139.1,1785.8 135.3,1028.0 135.6,658.0 147.1,546.6 228.6,215.2 1299.8,215.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0257/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[716.0,1028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4232328,37.7864141]}},{"type":"Feature","properties":{"resourceCoords":[1301.0,1028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4234217,37.7873491]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0258/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p258","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"22"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0258/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0258","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1304.7,209.8 1304.8,1857.4 934.0,1985.0 171.1,1862.2 130.9,1878.0 130.2,208.2 1304.7,209.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0258/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[717.0,1028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4236097,37.7882794]}},{"type":"Feature","properties":{"resourceCoords":[717.0,209.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4252531,37.7880705]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0259/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p259","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0259/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0259","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"734.8,215.8 1323.8,220.7 1321.2,731.4 1321.6,1197.3 1316.1,1866.9 991.9,1986.3 123.8,1868.3 131.0,213.6 734.8,215.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0259/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[139.0,1026.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42382186157607,37.78922726328366]}},{"type":"Feature","properties":{"resourceCoords":[725.0,200.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4256645100058,37.78993628619938]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0260/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p260","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0260/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0260","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"164.8,193.1 164.3,704.9 166.6,1171.7 163.8,1842.5 163.8,1864.3 667.6,1977.2 1044.2,1977.9 1278.7,1877.5 1280.1,194.9 1280.1,145.1 1158.6,21.9 1148.0,22.0 1137.5,1.0 678.1,1.0 676.0,5.0 1017.0,7.0 1016.0,24.0 912.0,26.0 287.0,23.0 237.8,21.1 165.0,100.4 164.8,193.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0260/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[722.0,1016.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4243593,37.7919736]}},{"type":"Feature","properties":{"resourceCoords":[722.0,194.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4259984,37.7917648]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0261/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p261","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0261/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0261","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"690.2,193.6 1253.5,177.0 1266.8,961.0 1269.4,1018.9 1286.5,1928.8 628.8,1994.8 189.3,1897.6 147.5,1916.5 116.4,198.9 690.2,193.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0261/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[702.0,1030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4247108,37.7937333]}},{"type":"Feature","properties":{"resourceCoords":[1285.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.423253,37.7948172]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0262/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p262","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0262/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0262","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1286.8,1872.1 944.2,1977.8 490.9,1872.6 119.1,1897.3 132.0,1022.3 131.3,966.6 143.8,212.6 1310.5,232.7 1286.8,1872.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0262/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[709.0,1032.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4250766,37.7955355]}},{"type":"Feature","properties":{"resourceCoords":[1287.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4236137,37.7966933]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0263/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p263","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0263/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0263","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1321.1,202.9 1319.2,1918.5 1273.2,1905.0 1072.2,1983.7 739.0,1981.0 141.3,1867.0 136.3,1868.6 137.5,199.9 1321.1,202.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0263/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[729.0,1025.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4254559,37.7974163]}},{"type":"Feature","properties":{"resourceCoords":[729.0,1852.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4238059,37.7976277]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0264/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p264","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0264/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0264","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"194.1,226.9 1309.5,228.8 1308.2,1890.7 1334.9,1888.8 1314.2,1937.1 1053.4,1987.7 588.5,1946.3 420.7,1995.0 144.3,1914.2 145.0,225.7 194.1,226.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0264/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[730.0,1037.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4258342,37.7992866]}},{"type":"Feature","properties":{"resourceCoords":[730.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4241636,37.7994997]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0265/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p265","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0265/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0265","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1328.8,229.4 1314.1,1905.2 1313.0,1953.2 1182.5,1918.4 459.1,1957.6 173.0,1883.4 166.5,1898.2 139.5,1899.9 154.6,218.3 1328.8,229.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0265/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[145.0,207.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42768172287414,37.79998780808802]}},{"type":"Feature","properties":{"resourceCoords":[1296.0,207.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42807284270876,37.80180746955863]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0266/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p266","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0266/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0266","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1298.3,277.6 1356.4,58.0 1377.1,1863.5 1293.4,1960.2 962.7,2008.3 426.4,2014.5 116.6,1934.1 117.4,1886.3 120.6,215.8 1298.5,218.6 1298.3,277.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0266/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[710.0,205.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42825368094654,37.80279833941641]}},{"type":"Feature","properties":{"resourceCoords":[130.0,205.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42806389751952,37.801877429265]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0268/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p268","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0268/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0268","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1341.8,1078.0 1226.9,1074.8 1229.1,1129.7 1340.3,1133.0 1322.3,1849.4 352.5,1845.1 174.8,1563.3 180.8,411.5 185.7,196.2 249.0,198.1 778.2,215.0 1365.7,229.7 1341.8,1078.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0268/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[729.0,1028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42388992722576,37.772907791814134]}},{"type":"Feature","properties":{"resourceCoords":[1047.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42235877931223,37.77365641732373]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0269/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p269","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0269/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0269","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1365.0,218.0 1280.8,1872.7 140.8,1816.3 143.6,1790.4 95.5,1789.0 130.5,1066.3 18.4,1060.4 17.4,1004.9 133.4,1010.8 177.4,155.2 1365.0,218.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0269/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[722.0,1026.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42423947909118,37.774808591760745]}},{"type":"Feature","properties":{"resourceCoords":[146.0,1026.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42399737590341,37.77391344938921]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0270/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p270","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0270/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0270","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1304.1,222.6 1303.9,1851.2 137.6,1850.0 136.4,220.2 1304.1,222.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0270/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[720.0,1034.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.424645,37.7766786]}},{"type":"Feature","properties":{"resourceCoords":[720.0,221.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4262857,37.7764706]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0271/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p271","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0271/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0271","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"160.4,203.8 752.5,209.6 1344.9,217.6 1332.8,1352.5 1328.8,1871.1 350.9,1861.3 141.4,1857.7 160.4,203.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0271/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[415.0,213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42654011734885,37.77780431986692]}},{"type":"Feature","properties":{"resourceCoords":[153.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42318204189831,37.77783810950952]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0272__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p272 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"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":"2928.4"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0272__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0272","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"129.0,199.0 128.0,1328.8 129.0,1845.0 670.3,1847.3 715.0,1847.5 725.2,575.4 725.3,575.4 725.3,575.4 729.7,306.6 729.8,296.9 720.1,200.5 129.0,199.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0272__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[129.0,1845.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4235632,37.7796841]}},{"type":"Feature","properties":{"resourceCoords":[129.0,199.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4268484,37.7792634]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0272__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p272 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.75"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2853.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2910.8"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0272__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0272","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"784.5,267.4 729.6,314.8 727.6,575.8 725.2,575.4 723.3,814.4 715.8,1753.9 788.2,1839.5 788.2,1843.7 1366.1,1843.2 1362.1,228.1 784.5,228.7 784.5,267.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0272__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1057.2,1851.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42419686605575,37.78291397390478]}},{"type":"Feature","properties":{"resourceCoords":[798.3,203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42746949222662,37.7820770987099]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0273/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p273","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.77"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0273/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0273","type":"ImageService3","width":1435,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"127.9,1850.2 164.2,203.7 215.4,205.0 1363.9,230.9 1340.3,1553.3 1335.0,1704.3 1314.5,1878.4 127.9,1850.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0273/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[138.0,1859.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4242986982992,37.78342777483597]}},{"type":"Feature","properties":{"resourceCoords":[138.0,209.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42758008738677,37.78295187475361]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0274/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p274","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0274/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0274","type":"ImageService3","width":1435,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"126.3,1667.0 129.2,1516.7 132.1,200.5 232.4,200.3 650.6,204.7 1288.4,208.7 1280.7,1560.5 1280.0,1849.0 200.2,1841.0 108.7,1840.5 126.3,1667.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0274/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1280.0,1849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4250653,37.7871398]}},{"type":"Feature","properties":{"resourceCoords":[701.0,205.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4281655,37.7857872]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0275/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p275","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0275/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0275","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1316.9,214.8 1327.0,1863.3 146.2,1869.0 143.3,1579.0 134.2,220.4 1316.9,214.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0275/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[138.0,1864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42507269717488,37.787125589603235]}},{"type":"Feature","properties":{"resourceCoords":[720.0,215.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4285467832022,37.787642070292684]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0276/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p276","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0276/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0276","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1313.1,213.9 1313.2,223.3 1435.0,356.6 1435.0,1640.7 1313.8,1772.5 1313.6,1865.3 723.0,1863.0 117.6,1863.3 118.0,212.0 1313.1,213.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0276/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[723.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4256361,37.7899559]}},{"type":"Feature","properties":{"resourceCoords":[723.0,213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4289237,37.7895373]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0277/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p277","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0277/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0277","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"115.0,204.8 152.0,204.9 708.3,207.6 1265.2,207.2 1264.2,1850.8 713.7,1856.5 153.0,1851.0 153.0,1801.3 31.8,1678.3 21.2,1678.4 13.2,1666.2 13.0,1585.0 14.0,1519.0 18.0,1508.0 14.0,1442.0 19.0,1396.0 15.0,1353.0 19.0,1275.0 14.0,1268.0 14.0,1232.0 19.0,1220.0 19.0,1200.0 25.0,1199.0 25.0,1178.0 20.0,1177.0 19.0,1073.0 15.0,1061.0 20.0,1037.0 16.0,976.0 19.0,962.0 25.0,957.0 22.0,910.0 26.0,909.0 26.0,887.0 16.0,886.0 16.0,880.0 25.0,879.0 26.0,849.0 25.0,814.0 17.0,813.0 18.0,651.0 28.0,650.0 28.0,597.0 18.0,591.0 19.0,444.0 29.0,443.0 29.0,421.0 19.0,420.0 19.0,334.0 29.0,333.0 25.9,297.9 115.0,204.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0277/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[153.0,1027.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4278228,37.7924345]}},{"type":"Feature","properties":{"resourceCoords":[153.0,1851.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4261759,37.7926445]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0278/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p278","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0278/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0278","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.1,209.7 1309.5,211.4 1310.3,1782.2 1309.0,1845.9 130.7,1843.1 131.1,209.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0278/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[700.0,203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43001766307964,37.794884707999195]}},{"type":"Feature","properties":{"resourceCoords":[1293.0,203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43020969065338,37.795827120078464]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0279/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p279","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0279/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0279","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1308.0,212.7 1307.2,437.2 1309.9,1671.4 1308.2,1861.5 123.5,1860.4 124.8,1796.2 123.2,211.5 1308.0,212.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0279/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[716.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4270992,37.7972065]}},{"type":"Feature","properties":{"resourceCoords":[716.0,212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4303869,37.7967895]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0280/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p280","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0280/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0280","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1314.5,200.7 1314.5,1845.2 183.6,1844.0 133.8,1842.8 135.6,1653.2 133.3,422.9 134.2,199.1 1314.5,200.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0280/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[724.0,1845.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.427473,37.7990728]}},{"type":"Feature","properties":{"resourceCoords":[724.0,200.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.430763,37.7986547]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0281/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p281","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0281/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0281","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1320.2,220.0 1322.8,1859.2 149.9,1860.1 147.4,220.5 1320.2,220.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0281/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1297.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42802715460854,37.8018249025741]}},{"type":"Feature","properties":{"resourceCoords":[1297.0,212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43133606273403,37.801408565417574]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0282/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p282","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0282/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0282","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"139.6,220.4 140.4,125.4 237.0,20.4 302.0,23.0 931.0,26.0 1224.9,22.8 1291.7,79.0 1289.6,224.1 1371.3,221.5 1435.0,241.4 1435.0,312.3 1357.0,295.4 1363.5,1708.5 1303.8,1928.0 1304.5,1868.8 125.3,1858.0 139.6,220.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0282/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[135.0,1019.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42972465077474,37.80165488890243]}},{"type":"Feature","properties":{"resourceCoords":[135.0,215.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4313366349569,37.801438567763874]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0283/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p283","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.23"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0283/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0283","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"263.2,334.5 738.8,346.1 739.0,353.0 1257.9,342.6 1276.2,1064.5 1322.8,1063.3 1316.2,1785.4 1291.0,1786.0 1290.5,1845.5 935.1,1819.8 720.2,1933.3 703.0,1910.6 686.0,1933.6 259.6,1840.5 173.2,1761.5 113.7,1372.2 135.4,960.0 263.2,334.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0283/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1291.0,1786.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4253435,37.7718028]}},{"type":"Feature","properties":{"resourceCoords":[739.0,353.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4284446,37.7704566]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0284/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p284","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0284/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0284","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1302.5,1038.5 1297.2,1862.0 706.0,1861.0 173.4,1856.4 138.5,1856.1 170.2,1032.3 117.0,1032.0 120.4,207.4 1306.0,213.6 1302.5,1038.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0284/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[706.0,1035.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4271742,37.7725274]}},{"type":"Feature","properties":{"resourceCoords":[706.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4255299,37.7727425]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0285/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p285","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0285/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0285","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1317.1,238.5 1263.2,1891.2 75.5,1850.1 104.2,1024.7 131.2,198.1 1317.1,238.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0285/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[704.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42595073702765,37.774656117909835]}},{"type":"Feature","properties":{"resourceCoords":[704.0,208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42920758330348,37.77415490339537]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0286/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p286","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0286/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0286","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"145.6,206.7 791.5,218.2 1030.5,228.2 1085.3,264.5 1181.0,299.2 1324.7,301.8 1296.5,1875.3 116.7,1851.5 145.6,206.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0286/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[405.0,1859.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42618610113517,37.77599524663329]}},{"type":"Feature","properties":{"resourceCoords":[1292.0,1038.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42813690051885,37.77715958470114]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0287/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p287","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0287/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0287","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1293.0,1871.5 705.5,1859.2 118.5,1848.9 147.7,280.8 149.1,208.2 1323.0,231.1 1293.0,1871.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0287/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[123.0,1033.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42810286762493,37.777178174869746]}},{"type":"Feature","properties":{"resourceCoords":[695.0,1859.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42665846110492,37.778315704581864]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0288/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p288","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0288/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0288","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1296.6,1894.8 1297.0,2066.0 719.6,2066.0 720.1,1948.9 710.1,1852.7 124.2,1853.3 119.8,220.9 1292.0,219.2 1296.6,1894.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0288/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[711.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42701597836044,37.78020019491886]}},{"type":"Feature","properties":{"resourceCoords":[136.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42683264076652,37.77928462023993]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0289/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p289","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0289/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0289","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"497.3,2066.0 114.2,2066.0 119.2,1879.6 163.9,186.2 1275.0,216.9 1346.0,218.9 1344.1,291.2 1321.9,290.6 1310.0,1869.8 1302.1,1869.5 711.9,1852.9 710.7,1892.4 497.3,2066.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0289/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[712.0,1036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42903253162693,37.78182070557363]}},{"type":"Feature","properties":{"resourceCoords":[712.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42739273535926,37.78206475423779]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0290/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p290","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0290/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0290","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1352.0,217.5 1351.1,284.3 1294.1,284.0 1294.6,723.2 1321.1,902.0 1309.4,1288.0 1300.0,1850.3 161.0,1834.2 118.0,1833.5 109.3,270.9 131.3,271.2 132.2,199.7 1295.1,216.7 1352.0,217.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0290/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[140.0,1860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42755702697144,37.78304620373936]}},{"type":"Feature","properties":{"resourceCoords":[140.0,576.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4301361891901,37.78268987798918]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0291/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p291","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0291/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0291","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1291.7,211.2 1286.8,1868.2 642.0,1867.0 219.1,1864.3 117.7,1865.0 120.6,1294.4 127.9,902.6 98.9,721.5 93.2,275.9 151.0,275.6 151.1,207.8 1291.7,211.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0291/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1289.0,1030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4300183617304,37.7865080199966]}},{"type":"Feature","properties":{"resourceCoords":[1289.0,1849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42839388796118,37.786717030029]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0292/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p292","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0292/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0292","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1313.5,208.8 1313.5,1859.8 127.5,1858.2 129.2,206.6 673.6,207.3 720.7,207.3 1313.5,208.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0292/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[721.0,1034.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4301856,37.7874436]}},{"type":"Feature","properties":{"resourceCoords":[721.0,1859.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4285434,37.7876523]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0293/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p293","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0293/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0293","type":"ImageService3","width":1436,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"712.1,220.5 1297.8,221.3 1294.1,1860.8 107.1,1855.8 111.8,217.8 712.1,220.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0293/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[687.0,1032.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43057387820063,37.7892896669337]}},{"type":"Feature","properties":{"resourceCoords":[687.0,213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43221622651893,37.7890771759275]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0294/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p294","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0294/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0294","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"152.0,1862.3 152.0,1853.0 152.0,210.0 660.5,209.6 1263.1,212.3 1262.2,1855.2 1225.2,1855.2 1110.4,1975.0 1110.4,2066.0 274.2,2066.0 274.2,1996.2 152.0,1862.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0294/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[152.0,1853.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4291113,37.7904668]}},{"type":"Feature","properties":{"resourceCoords":[152.0,210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4324,37.7900473]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0295/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p295","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0295/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0295","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1266.0,213.0 1266.0,1857.0 709.2,1857.6 153.0,1855.2 153.1,210.2 1266.0,213.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0295/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1266.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4298199,37.7939823]}},{"type":"Feature","properties":{"resourceCoords":[1266.0,213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4331067,37.7935644]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0296/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p296","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0296/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0296","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"173.4,203.5 1304.8,205.8 1304.5,1852.2 118.0,1850.3 118.4,204.8 173.4,203.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0296/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[704.0,1851.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4300072,37.7949074]}},{"type":"Feature","properties":{"resourceCoords":[704.0,205.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4332948,37.7944887]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0297/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p297","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0297/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0297","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"120.8,210.3 1300.7,211.3 1300.3,1853.8 120.9,1852.3 120.8,210.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0297/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[711.0,1032.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4320312,37.7965805]}},{"type":"Feature","properties":{"resourceCoords":[711.0,1853.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4303869,37.7967895]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0298/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p298","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0298/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0298","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"148.3,195.8 1325.2,221.4 1291.2,1862.4 114.0,1836.4 148.3,195.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0298/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[712.0,1014.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4324354915749,37.79842982231235]}},{"type":"Feature","properties":{"resourceCoords":[712.0,1836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43079349162268,37.79866620866388]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0299/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p299","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0299/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0299","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"126.6,226.3 1302.9,209.4 1301.8,138.5 1301.2,94.5 1432.0,245.7 1432.0,1639.3 1326.8,1759.2 1328.3,1854.6 152.0,1871.5 126.6,226.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0299/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[396.0,211.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43435082136992,37.799593056598894]}},{"type":"Feature","properties":{"resourceCoords":[139.0,1858.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43097482301562,37.799564379200405]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0301/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p301","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.21"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0301/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0301","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"18.0,1490.9 18.0,1315.0 22.0,1314.0 22.0,1293.0 18.0,1292.0 22.0,1290.0 22.0,1214.0 18.0,1203.0 20.7,414.4 34.6,414.6 190.7,269.7 190.0,312.0 1245.7,331.4 1245.0,374.4 1236.5,894.0 1258.2,928.6 1317.7,979.4 1293.0,1007.5 1281.8,1009.0 1250.8,1857.9 1047.4,1821.8 549.2,1883.1 294.1,1826.0 293.7,1763.5 237.8,1745.5 166.0,1747.2 168.8,1619.7 18.0,1490.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0301/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[706.0,1771.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4318761,37.8042494]}},{"type":"Feature","properties":{"resourceCoords":[190.0,312.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43499,37.8028542]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0302/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p302","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.47"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0302/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0302","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"509.9,1863.1 357.7,1755.8 298.9,1678.3 202.7,438.6 201.3,421.9 1432.0,470.6 1432.0,600.5 1315.3,596.4 1203.4,1756.6 457.8,1935.7 509.9,1863.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0302/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43568166209366,37.804589900304]}},{"type":"Feature","properties":{"resourceCoords":[1433.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43579390802475,37.805688360757124]}},{"type":"Feature","properties":{"resourceCoords":[1433.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.433802554958,37.805817184329435]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43369030902691,37.80471872387631]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0303__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p303 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.18"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2768.0"},{"label":"split_canvas_w","value":"2842.0"},{"label":"split_canvas_h","value":"5500.0"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0303__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0303","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"73.8,1652.1 79.1,1645.9 81.2,2027.4 94.2,2014.2 327.6,2016.7 457.6,1861.4 650.7,1790.5 705.6,1459.8 184.0,892.2 98.1,808.1 31.9,865.3 75.5,901.5 86.5,995.0 87.5,1163.8 77.3,1356.5 79.1,1645.9 73.8,1652.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0303__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,692.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43082740444846,37.766108492851025]}},{"type":"Feature","properties":{"resourceCoords":[710.5,692.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42977656584675,37.76525526785322]}},{"type":"Feature","properties":{"resourceCoords":[710.5,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4318521280276,37.76363512787409]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2067.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43290296662931,37.76448835287189]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0303__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p303 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.66"},{"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":"5732.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0303__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0303","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1272.0,979.8 1269.3,117.7 1266.2,106.0 378.6,98.8 397.2,537.1 361.3,629.1 259.4,628.9 333.1,714.5 373.5,985.9 387.8,1020.8 491.5,1133.9 485.8,1211.5 610.1,1355.8 661.3,1411.5 710.5,1465.1 710.5,1472.4 881.1,1670.2 986.8,1808.6 1086.3,1924.0 1148.6,1981.8 1199.9,1981.4 1283.0,1981.3 1302.7,1908.0 1275.6,1908.0 1272.0,979.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0303__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[840.0,1036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4331956,37.7650699]}},{"type":"Feature","properties":{"resourceCoords":[-385.0,91.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4351989,37.7626708]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0304/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p304","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.37"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0304/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0304","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1170.8,111.2 1174.6,584.6 1152.3,629.0 1142.5,722.6 1139.7,1061.8 1267.9,1056.1 1129.3,1993.6 917.5,1999.8 644.3,1848.4 264.9,1754.8 186.5,1136.5 296.9,113.2 1170.8,111.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0304/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[238.0,1062.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4289925,37.7677331]}},{"type":"Feature","properties":{"resourceCoords":[238.0,113.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.431214,37.7676036]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0305/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p305","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.43"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0305/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0305","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"351.8,317.1 359.8,317.0 408.9,318.1 720.9,317.9 760.6,317.4 1244.4,318.7 1287.0,318.0 1287.0,1790.0 759.1,1787.3 759.2,1780.3 275.9,1756.2 359.9,1392.3 226.9,1386.7 260.2,1036.8 278.7,941.0 305.6,897.1 343.9,408.2 351.8,317.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0305/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1287.0,1790.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4286288,37.7713905]}},{"type":"Feature","properties":{"resourceCoords":[1287.0,318.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4319208,37.770971]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0306/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p306","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0306/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0306","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1294.0,1862.7 123.8,1862.9 121.7,231.8 1291.9,231.9 1294.0,1862.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0306/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[397.0,210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43205359772267,37.771404792546186]}},{"type":"Feature","properties":{"resourceCoords":[712.0,1852.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42884067606711,37.77232631228091]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0307/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p307","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0307/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0307","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"136.7,216.8 1314.2,218.3 1315.1,1089.2 1314.3,1862.0 137.1,1860.5 136.7,216.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0307/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[724.0,1040.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.430839,37.7739776]}},{"type":"Feature","properties":{"resourceCoords":[724.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.429195,37.7741867]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0308/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p308","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0308/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0308","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"714.1,186.9 714.0,221.0 124.8,220.2 125.7,1092.7 124.8,1866.8 770.0,1867.0 1008.9,1872.7 1064.4,1908.0 1160.5,1941.0 1304.2,1941.0 1304.2,1868.3 1304.8,221.8 1282.2,221.8 1318.7,18.6 1325.7,18.6 1321.0,12.0 1321.0,1.0 876.2,1.0 873.5,4.1 1004.0,5.0 1005.0,23.0 853.8,26.7 714.1,186.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0308/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[714.0,1867.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4295724,37.7760523]}},{"type":"Feature","properties":{"resourceCoords":[714.0,221.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4328627,37.7756336]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0309/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p309","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0309/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0309","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.4,202.2 109.0,202.2 141.6,20.9 304.0,25.0 720.8,24.4 719.2,203.0 1302.5,205.2 1301.2,1841.8 130.5,1840.1 131.4,202.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0309/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[717.0,1023.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4315916,37.7777074]}},{"type":"Feature","properties":{"resourceCoords":[717.0,203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4332393,37.7774974]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0310/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p310","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0310/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0310","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"123.7,222.2 183.0,222.5 666.5,223.0 1307.4,223.7 1307.2,1874.3 122.5,1872.7 123.7,222.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0310/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[715.0,1048.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4319692,37.7795687]}},{"type":"Feature","properties":{"resourceCoords":[715.0,223.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.433613,37.7793593]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0311/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p311","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0311/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0311","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1266.2,203.6 1295.8,203.4 1307.1,1031.5 1301.3,1031.5 1298.4,1291.8 1284.4,1368.9 1239.4,1367.3 1238.5,1857.4 125.0,1856.0 125.0,202.0 1266.2,203.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0311/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[125.0,1029.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4321574,37.7805017]}},{"type":"Feature","properties":{"resourceCoords":[125.0,202.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4338018,37.7802924]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0312/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p312","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.74"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0312/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0312","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"132.0,213.0 1306.0,214.5 1307.8,550.2 1306.5,984.6 1307.5,1484.8 1304.0,1863.1 130.8,1861.0 60.0,1860.8 61.1,1372.7 106.0,1374.2 119.9,1297.5 122.9,1038.1 128.8,1038.1 118.0,213.1 132.0,213.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0312/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[719.0,1039.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4327195,37.7832913]}},{"type":"Feature","properties":{"resourceCoords":[719.0,214.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4343659,37.783081]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0313/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p313","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0313/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0313","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"223.2,206.5 285.2,207.5 380.1,208.6 381.3,23.6 646.7,25.6 695.3,66.2 695.5,210.9 1288.8,215.1 1280.9,1523.7 1277.9,1872.4 137.6,1863.9 79.8,1863.4 85.5,1483.0 87.3,980.0 91.0,543.0 91.1,205.3 223.2,206.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0313/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[710.0,1031.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43312280938682,37.78519297224459]}},{"type":"Feature","properties":{"resourceCoords":[710.0,212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43474632639038,37.78497827034263]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0314/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p314","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0314/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0314","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1317.2,228.8 1308.0,1088.3 1298.5,1861.5 713.1,1852.9 666.5,1852.4 128.8,1845.1 133.7,1501.7 149.0,213.0 1317.2,228.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0314/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[723.0,1033.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4334834,37.787024]}},{"type":"Feature","properties":{"resourceCoords":[149.0,213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4349323,37.7858859]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0315/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p315","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0315/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0315","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1314.0,1869.8 729.8,1867.9 131.1,1864.0 134.8,1089.4 137.6,228.3 1320.7,235.4 1314.0,1869.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0315/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[726.0,1866.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43221190167135,37.7891123071314]}},{"type":"Feature","properties":{"resourceCoords":[726.0,223.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43551445439942,37.788680056363184]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0316/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p316","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0316/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0316","type":"ImageService3","width":1433,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"715.2,172.8 715.7,215.0 157.0,215.0 159.5,1859.5 668.7,1858.3 1272.0,1860.2 1272.0,215.0 1290.5,215.0 1144.6,1.0 871.5,1.0 867.0,6.0 957.0,7.0 956.0,24.0 848.0,26.8 715.2,172.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0316/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[157.0,215.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4356874,37.789628]}},{"type":"Feature","properties":{"resourceCoords":[1272.0,215.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4360438,37.7913898]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0317/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p317","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0317/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0317","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"723.2,187.3 723.2,206.4 1281.8,205.5 1285.8,1855.3 170.2,1855.2 167.8,206.1 186.2,206.1 59.1,20.1 645.7,23.9 645.8,98.6 723.2,187.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0317/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[727.0,1030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4345767,37.7924773]}},{"type":"Feature","properties":{"resourceCoords":[727.0,1855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4329307,37.7926833]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0318/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p318","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0318/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0318","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1319.2,237.9 1307.5,1873.5 183.2,1863.5 128.5,1864.4 140.4,227.4 1319.2,237.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0318/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[709.0,1868.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43329555182888,37.794486230172716]}},{"type":"Feature","properties":{"resourceCoords":[709.0,219.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43660603549888,37.794045994130485]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0319/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p319","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0319/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0319","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1316.3,215.3 1316.7,1864.7 130.8,1863.5 130.8,213.9 1316.3,215.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0319/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[724.0,1864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4336761,37.7963714]}},{"type":"Feature","properties":{"resourceCoords":[724.0,215.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4369623,37.7959535]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0320/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p320","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0320/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0320","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1320.0,216.2 1320.1,1867.5 135.1,1866.3 134.7,215.8 1320.0,216.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0320/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[727.0,1867.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.434053,37.7982364]}},{"type":"Feature","properties":{"resourceCoords":[727.0,216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.437341,37.7978185]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0321/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p321","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0321/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0321","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1316.1,222.4 1315.0,1482.1 1314.8,1798.3 1314.7,1869.3 137.2,1867.1 138.4,220.9 1316.1,222.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0321/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1294.0,1035.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43627768177225,37.80078337899813]}},{"type":"Feature","properties":{"resourceCoords":[1294.0,210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43792567749594,37.80057282878325]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0322/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p322","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.67"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0322/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0322","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1388.0,1053.3 1322.8,1151.7 1294.2,1285.9 1287.5,1897.2 1287.5,1900.2 1112.5,2066.0 334.0,2066.0 136.0,1827.0 137.7,1555.8 145.4,300.8 145.4,295.0 696.1,280.5 691.4,264.8 1220.3,266.5 1323.7,416.2 1328.5,422.8 1353.1,453.8 1309.1,499.5 1302.8,1053.2 1309.4,1053.3 1388.0,1053.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0322/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1286.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43516051406078,37.80282961559265]}},{"type":"Feature","properties":{"resourceCoords":[137.0,212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43808307932157,37.80057406425692]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0323/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p323","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.11"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0323/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0323","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"372.8,294.7 945.9,243.7 1131.2,47.0 1131.5,220.1 1132.0,589.8 1132.5,974.8 1229.4,974.7 1231.0,1760.0 178.3,1760.0 178.2,1715.3 179.7,1180.1 203.7,1062.5 260.2,975.8 191.4,976.4 185.6,976.4 187.2,491.6 225.3,451.3 372.8,294.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0323/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1231.0,1760.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4353733,37.8047601]}},{"type":"Feature","properties":{"resourceCoords":[716.0,1760.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4351858,37.8038277]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0324/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p324","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.13"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0324/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0324","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1325.1,657.6 1261.9,1102.5 1316.7,1931.5 1144.0,1986.1 702.1,1936.0 705.8,1882.0 192.1,1822.0 192.0,1786.0 190.3,999.8 93.3,999.9 92.8,614.5 92.6,467.4 477.8,319.3 477.1,330.9 477.0,380.1 808.7,391.3 814.8,384.9 1227.5,453.4 1226.2,21.5 1257.1,21.4 1325.1,657.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0324/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[192.0,1786.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4353733,37.8047601]}},{"type":"Feature","properties":{"resourceCoords":[710.0,1786.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4355616,37.8056969]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0326/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p326","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0326/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0326","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1233.2,356.1 1237.7,765.9 1236.7,1121.5 1239.6,2036.8 1184.2,1996.2 356.1,1961.3 277.0,1989.8 256.6,2066.0 224.8,2066.0 219.9,974.2 216.5,19.0 232.1,19.1 259.7,121.3 1160.8,93.1 1232.5,6.1 1233.2,356.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0326/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[730.0,1992.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43144825827439,37.76678368214689]}},{"type":"Feature","properties":{"resourceCoords":[730.0,95.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43522882749545,37.76656481231806]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0327/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p327","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.56"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0327/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0327","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1179.7,479.0 1178.3,811.3 1170.6,973.5 1169.2,994.3 1165.8,1045.5 1167.0,1214.8 1180.1,1408.1 1182.5,1521.3 1180.8,1906.0 1180.5,1994.6 303.8,1993.8 309.1,1946.3 245.6,1899.5 245.8,1117.9 247.8,814.2 245.2,464.2 245.7,165.4 321.2,74.3 1174.8,103.4 1181.2,91.6 1179.7,479.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0327/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[246.0,1521.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4323165,37.7675389]}},{"type":"Feature","properties":{"resourceCoords":[246.0,93.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4356482,37.7673365]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0328/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p328","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0328/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0328","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"806.0,317.6 831.8,317.8 838.6,317.6 915.8,318.1 1169.0,318.0 1169.0,363.6 1169.0,1718.0 1169.0,1770.0 244.9,1769.1 279.3,1377.8 286.4,1262.5 289.4,1064.8 302.6,892.5 330.9,704.7 364.7,317.3 631.6,317.9 806.0,317.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0328/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1169.0,1770.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4319208,37.770971]}},{"type":"Feature","properties":{"resourceCoords":[1169.0,318.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.435207,37.7705523]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0329/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p329","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0329/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0329","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1305.6,211.6 1306.7,1858.0 123.4,1857.2 122.2,210.8 1305.6,211.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0329/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[715.0,1035.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4337515,37.7716964]}},{"type":"Feature","properties":{"resourceCoords":[715.0,211.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4353964,37.7714878]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0330/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p330","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0330/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0330","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1179.0,205.8 1196.0,215.4 1311.8,206.4 1312.0,1853.1 130.8,1851.7 130.5,205.2 1179.0,205.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0330/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[720.0,1030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4341274,37.7735594]}},{"type":"Feature","properties":{"resourceCoords":[720.0,206.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4357721,37.7733502]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0331__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p331 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"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":"2891.6"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0331__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0331","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"721.8,1008.0 721.9,986.2 721.9,336.4 698.4,308.9 699.8,243.4 123.3,231.6 91.0,1840.4 667.5,1852.7 668.3,1819.3 716.6,1766.0 721.8,1008.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0331__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[644.9,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43283742330205,37.775599693602686]}},{"type":"Feature","properties":{"resourceCoords":[644.9,215.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43618805429449,37.775118565524075]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0331__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p331 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.88"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2858.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2889.2"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0331__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0331","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1360.1,1864.2 1360.7,1864.2 1345.8,1043.0 1301.2,1043.0 1301.1,221.0 722.9,220.7 722.9,305.4 722.9,490.1 722.9,853.0 722.9,853.0 722.8,862.4 716.1,1862.7 1301.2,1864.0 1360.1,1864.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0331__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1301.1,1864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4334247,37.7784279]}},{"type":"Feature","properties":{"resourceCoords":[1301.1,221.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4367137,37.7780127]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0332/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p332","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0332/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0332","type":"ImageService3","width":1442,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"194.6,1864.6 171.1,1040.8 126.2,1041.2 117.6,216.5 1297.9,204.6 1317.2,1852.5 677.0,1859.4 194.6,1864.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0332/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[727.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4336171061454,37.779361368512404]}},{"type":"Feature","properties":{"resourceCoords":[727.0,199.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43693011228517,37.77897097937554]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0333/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p333","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0333/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0333","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1313.5,211.3 1313.8,1861.9 1270.1,1862.2 130.8,1860.9 130.3,210.5 1313.5,211.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0333/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[724.0,1037.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4356328,37.7810177]}},{"type":"Feature","properties":{"resourceCoords":[724.0,211.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.437278,37.7808087]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0334/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p334","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.30"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0334/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0334","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"709.8,300.7 1289.7,297.2 1289.7,301.9 1436.0,428.6 1436.0,1763.8 1353.2,1763.4 1298.5,1762.9 1182.0,1762.5 140.0,1762.0 139.9,300.1 709.8,300.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0334/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[140.0,1032.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4358202,37.7819462]}},{"type":"Feature","properties":{"resourceCoords":[140.0,1762.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4341786,37.7821549]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0335__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p335 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.86"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2954.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2793.6"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0335__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0335","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"738.6,208.8 738.6,1025.6 738.6,1711.2 740.8,1713.0 741.8,1856.5 1330.1,1857.0 1330.1,213.0 738.6,208.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0335__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1330.1,213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4382199,37.7854674]}},{"type":"Feature","properties":{"resourceCoords":[1330.1,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4349323,37.7858859]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0336/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p336","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0336/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0336","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1301.3,202.8 1301.4,1848.0 123.6,1846.1 123.8,201.2 1301.3,202.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0336/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[712.0,1847.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43512,37.7868155]}},{"type":"Feature","properties":{"resourceCoords":[712.0,202.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4384077,37.7863967]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0337/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p337","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0337/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0337","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1308.3,224.3 1322.6,1850.1 146.2,1859.2 130.7,233.7 1308.3,224.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0337/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[726.0,1858.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43548824786586,37.78867475419986]}},{"type":"Feature","properties":{"resourceCoords":[726.0,216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43881460422342,37.78827642627114]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0338__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p338 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"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":"2878.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0338__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0338","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"125.8,231.4 127.1,1845.5 674.9,1845.4 674.4,1804.0 718.5,1755.5 718.5,280.6 672.9,234.3 672.9,231.4 125.8,231.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0338__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[155.9,1033.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43735265378264,37.7894653416409]}},{"type":"Feature","properties":{"resourceCoords":[155.9,209.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43903204737202,37.78925336880848]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0338__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p338 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.85"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2878.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2870.0"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0338__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0338","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"719.5,323.7 719.5,1746.4 796.4,1834.9 796.4,1854.0 1352.5,1853.9 1350.9,210.1 796.5,210.0 796.4,248.1 719.5,323.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0338__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[796.5,1854.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4362186,37.7922658]}},{"type":"Feature","properties":{"resourceCoords":[796.5,210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4395099,37.79185]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0339/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p339","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0339/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0339","type":"ImageService3","width":1437,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1305.5,213.6 1305.0,1857.5 121.5,1855.5 121.6,212.2 1305.5,213.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0339/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[706.0,1036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4382262,37.7938622]}},{"type":"Feature","properties":{"resourceCoords":[706.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4365844,37.794071]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0340/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p340","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0340/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0340","type":"ImageService3","width":1442,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1308.3,203.7 1308.2,1844.1 130.8,1842.7 131.3,202.3 1308.3,203.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0340/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[720.0,1024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4386073,37.7957444]}},{"type":"Feature","properties":{"resourceCoords":[720.0,203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4402547,37.7955349]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0341/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p341","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0341/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0341","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1299.2,1853.2 115.4,1852.8 115.5,201.9 1299.4,203.3 1299.2,1853.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0341/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[707.0,1853.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.437341,37.7978185]}},{"type":"Feature","properties":{"resourceCoords":[707.0,203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.440631,37.7974001]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0342/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p342","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0342/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0342","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1280.6,1820.2 1280.0,1864.0 113.7,1846.9 137.0,216.0 1303.3,233.9 1280.6,1820.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0342/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1280.0,1864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4379081,37.8006108]}},{"type":"Feature","properties":{"resourceCoords":[137.0,216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4408204,37.7983336]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0343/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p343","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0343/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0343","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1321.2,204.2 1330.0,204.3 1323.8,640.8 1304.1,640.8 1282.0,1061.2 1267.1,1061.2 1326.4,1967.4 1323.1,1962.9 1218.0,1812.8 685.5,1814.4 690.3,1830.2 136.0,1848.2 135.9,1809.7 136.0,203.0 1321.2,204.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0343/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[136.0,1854.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4379081,37.8006108]}},{"type":"Feature","properties":{"resourceCoords":[136.0,203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4411963,37.8001929]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0344/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p344","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.27"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0344/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0344","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1239.0,297.0 1239.2,1563.9 1036.3,1779.0 409.4,1834.2 247.9,2005.4 224.2,1975.8 222.7,1973.8 165.4,1112.0 179.5,1112.1 200.2,712.2 218.9,712.2 224.3,297.0 491.3,297.0 1239.0,297.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0344/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[216.0,297.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4415735,37.8020584]}},{"type":"Feature","properties":{"resourceCoords":[1239.0,297.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4419158,37.8037514]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0345/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p345","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.02"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0345/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0345","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"296.5,288.9 1114.5,289.2 1161.5,276.1 1210.1,283.9 1304.8,332.5 1305.1,562.6 1336.2,562.5 1319.4,596.9 1286.1,896.0 1333.9,1348.0 1306.1,1368.8 1306.8,1788.5 905.9,1721.5 900.0,1727.7 577.6,1716.5 577.8,1668.7 578.4,1657.3 204.0,1800.8 203.9,1584.1 203.8,1415.7 204.0,289.0 296.5,288.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0345/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[204.0,1014.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4402084,37.8039673]}},{"type":"Feature","properties":{"resourceCoords":[204.0,289.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4419158,37.8037514]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0347__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p347 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.55"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2079.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3684.4"},{"label":"split_canvas_h","value":"8268.0"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0347__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0347","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"586.5,1913.1 853.2,1908.0 1060.0,1903.3 1137.1,1902.2 1390.0,1896.7 1360.0,484.6 1360.4,442.1 1380.0,422.2 1440.0,421.0 1440.0,405.2 1440.0,395.6 1401.0,400.5 1345.3,99.4 1027.8,167.9 821.5,139.1 616.5,1457.8 612.5,1518.5 586.5,1913.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0347__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1027.4,1904.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4350755,37.7699028]}},{"type":"Feature","properties":{"resourceCoords":[1365.1,739.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4378271,37.7702178]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0348/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p348","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0348/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0348","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1297.0,1018.0 1440.0,1018.2 1440.0,1028.5 1440.0,1063.2 1297.0,1063.0 1297.8,1855.3 144.0,1855.0 142.2,293.9 143.6,246.9 165.7,225.3 232.1,225.3 232.7,197.2 536.9,165.7 701.4,75.3 1296.1,262.1 1297.0,1018.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0348/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[722.0,1855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4353964,37.7714878]}},{"type":"Feature","properties":{"resourceCoords":[144.0,1855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.435207,37.7705523]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0349/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p349","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0349/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0349","type":"ImageService3","width":1441,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"698.1,104.0 1308.8,251.5 1311.3,1864.5 1197.0,1873.7 1180.2,1864.1 145.0,1865.0 143.7,1062.7 288.5,1062.7 288.5,1017.2 143.7,1017.1 142.4,251.6 698.1,104.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0349/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[727.0,1865.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4357721,37.7733502]}},{"type":"Feature","properties":{"resourceCoords":[145.0,1865.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4355844,37.7724199]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0350/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p350","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0350/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0350","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1304.3,1016.8 1305.6,1399.2 1304.0,1866.0 1337.5,1866.2 1399.2,2066.0 747.3,2066.0 745.2,1959.7 719.9,1931.3 720.0,1865.0 136.3,1864.8 136.1,249.0 143.1,250.7 578.5,67.0 1304.6,176.5 1304.3,1016.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0350/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[720.0,1865.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4361506,37.7752152]}},{"type":"Feature","properties":{"resourceCoords":[720.0,213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4394849,37.7747911]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0351/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p351","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0351/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0351","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1296.1,1859.1 723.4,1858.1 723.1,2066.0 712.0,2066.0 712.0,1951.4 601.5,2066.0 227.4,2066.0 162.9,1857.0 129.6,1856.9 131.2,1391.0 129.9,1009.5 130.3,171.1 237.8,187.3 656.4,102.8 1254.1,215.9 1296.0,273.0 1296.1,1859.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0351/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[712.0,1858.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4365257,37.7770786]}},{"type":"Feature","properties":{"resourceCoords":[712.0,207.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4398652,37.7766536]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0352/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p352","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0352/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0352","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"140.9,281.4 647.8,69.8 1304.0,220.0 1314.5,218.9 1320.8,833.5 1321.0,1062.0 1328.6,1870.0 156.1,1879.2 140.9,281.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0352/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1300.0,1500.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43782418778426,37.77973955349099]}},{"type":"Feature","properties":{"resourceCoords":[147.0,1035.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43840836755646,37.77779520654738]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0353/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p353","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0353/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0353","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"147.9,1066.0 149.6,835.4 148.1,215.4 677.2,165.2 907.5,64.7 1330.8,205.1 1333.3,1880.2 149.3,1881.0 147.9,1066.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0353/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[718.0,1862.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4373072478631,37.780764028245954]}},{"type":"Feature","properties":{"resourceCoords":[137.0,1862.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43712298555833,37.77984982288354]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0354/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p354","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0354/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0354","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1291.4,1207.4 1309.3,1367.7 1386.8,1626.8 1402.2,1701.7 1407.6,1851.4 769.3,1856.0 142.0,1856.0 140.1,223.9 164.0,231.8 610.7,102.7 1289.4,250.4 1291.4,1207.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0354/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[721.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.437655,37.7826719]}},{"type":"Feature","properties":{"resourceCoords":[142.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4374661,37.7817369]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0355/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p355","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0355/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0355","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"151.7,252.4 970.0,98.1 1287.2,224.7 1301.0,1862.3 713.7,1863.1 715.5,2066.0 472.4,2066.0 242.6,1870.4 242.6,1865.2 236.1,1713.4 219.9,1637.7 139.5,1375.8 120.2,1213.4 111.3,243.9 151.7,252.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0355/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[717.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4380387,37.7845359]}},{"type":"Feature","properties":{"resourceCoords":[1294.0,1035.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4398878,37.7852551]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0356/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p356","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0356/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0356","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.9,225.8 157.1,236.1 586.8,120.1 1289.0,240.5 1291.0,1849.0 134.0,1849.0 131.9,225.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0356/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[712.0,1849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4384077,37.7863967]}},{"type":"Feature","properties":{"resourceCoords":[134.0,1849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4382199,37.7854674]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0357/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p357","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0357/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0357","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1304.4,1868.8 124.0,1856.5 138.8,235.4 147.1,236.9 702.2,111.3 1319.7,275.1 1304.4,1868.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0357/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[725.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43880121941812,37.78828485313776]}},{"type":"Feature","properties":{"resourceCoords":[137.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4385993199266,37.78734850774834]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0358/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p358","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0358/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0358","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"158.3,250.9 726.6,123.3 1260.0,217.5 1260.0,1844.7 1280.9,1844.8 1265.3,2053.2 1433.0,2053.4 1433.0,2066.0 756.3,2066.0 756.5,1894.2 710.0,1846.9 710.0,1844.0 157.7,1843.3 158.3,250.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0358/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[710.0,1844.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4391547,37.7900924]}},{"type":"Feature","properties":{"resourceCoords":[710.0,192.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4424913,37.789668]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0359/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p359","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0359/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0359","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"176.5,237.1 757.5,136.1 1231.7,228.7 1265.8,214.8 1267.6,1859.0 719.0,1859.0 719.0,1896.6 642.9,1971.5 642.9,2066.0 174.9,2066.0 190.2,1859.0 169.2,1859.0 167.5,235.5 176.5,237.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0359/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[719.0,1035.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4411783,37.7916393]}},{"type":"Feature","properties":{"resourceCoords":[719.0,1859.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4395099,37.79185]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0360/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p360","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0360/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0360","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1320.5,1857.8 146.6,1856.3 146.6,207.8 410.8,100.7 599.0,139.5 642.6,78.8 871.7,73.5 1320.5,139.5 1320.5,1857.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0360/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[726.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4398743,37.7936526]}},{"type":"Feature","properties":{"resourceCoords":[726.0,205.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.44321,37.7932283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0361/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p361","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0361/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0361","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"306.1,157.7 461.8,81.5 929.9,55.6 1311.2,145.1 1311.4,1849.6 144.3,1848.4 144.0,133.9 306.1,157.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0361/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[728.0,1025.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4419222,37.795323]}},{"type":"Feature","properties":{"resourceCoords":[728.0,1849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4402547,37.7955349]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0362/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p362","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0362/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0362","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1295.5,1861.3 129.4,1860.0 129.3,156.1 203.2,173.4 291.7,94.9 687.0,48.9 1295.5,154.7 1295.5,1861.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0362/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[712.0,1037.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.442299,37.7971881]}},{"type":"Feature","properties":{"resourceCoords":[712.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.440631,37.7974001]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0363/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p363","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0363/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0363","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"143.3,148.9 182.9,156.0 1056.3,66.7 1302.2,133.6 1291.0,1859.0 132.4,1850.2 143.3,148.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0363/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1291.0,1859.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4411963,37.8001929]}},{"type":"Feature","properties":{"resourceCoords":[143.0,209.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.444153,37.7979099]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0364/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p364","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0364/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0364","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"128.9,134.2 205.2,154.4 776.7,53.2 1207.2,147.8 1273.6,49.2 1292.5,49.1 1291.2,1861.8 128.3,1860.2 128.9,134.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0364/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[712.0,1039.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4430541,37.8009167]}},{"type":"Feature","properties":{"resourceCoords":[712.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4413856,37.8011293]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0365/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p365","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0365/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0365","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"497.7,147.7 1238.8,233.4 1238.4,1774.7 1142.3,1774.6 451.2,1773.6 196.8,1773.2 197.8,149.2 497.7,147.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0365/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[717.0,1037.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4434316,37.8027772]}},{"type":"Feature","properties":{"resourceCoords":[717.0,1774.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4417618,37.8029899]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0366/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p366","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.53"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0366/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0366","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1315.8,345.1 1239.1,313.7 714.2,312.6 714.2,1.0 690.8,1.0 657.1,207.8 404.4,189.2 281.4,251.8 194.1,241.6 191.2,1779.3 1039.4,1782.0 1088.2,1768.5 1138.6,1776.7 1236.6,1827.5 1236.2,2066.0 1268.5,2066.0 1363.7,1871.8 1280.5,1504.9 1272.3,909.5 1350.7,659.1 1315.8,345.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0366/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[712.0,1781.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4421396,37.8048581]}},{"type":"Feature","properties":{"resourceCoords":[194.0,311.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4452851,37.8034994]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0368/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Francisco, California | 1899 | sanborn00813_010 p368","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.04"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-17T19:23:52Z","modified":"2026-10-17T19:23:52Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0368/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0368","type":"ImageService3","width":1434,"height":2067},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"911.9,1914.3 607.2,1968.8 227.6,1937.1 126.6,1920.8 78.0,1809.4 147.1,1243.3 104.7,452.1 162.8,320.9 481.9,268.7 513.6,118.5 596.4,109.6 891.8,112.8 920.2,258.1 1271.0,285.0 1364.9,574.0 1341.1,1317.6 1356.2,1315.9 1325.3,1391.3 1325.0,1908.0 1017.4,1908.4 1017.4,1931.4 911.9,1914.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813189903:00813_03_1899-0368/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1325.0,1908.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.445474,37.8044329]}},{"type":"Feature","properties":{"resourceCoords":[612.0,1908.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.447119,37.8042232]}}]}}]}