{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00813_007.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"San Francisco, California | 1886 | mapsnap generated fit (2026-10-24)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-24"},{"label":"run","value":"corpus-v2.2"},{"label":"pages","value":"71"},{"label":"placed","value":"39"},{"label":"unplaced","value":"32"},{"label":"fit sources","value":"georef-snap 29, georef 9, streets-candidate 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"10 sheet(s) cut into 20 panels"},{"label":"unplaced pages","value":"p0R__1 (tier 1, 37.74122,-122.42296 +/-215m); p0R__2 (tier 1, 37.73232,-122.42925 +/-151m); p133R (tier 3, 37.75836,-122.39055 +/-786m); p134L__2 (tier 4, 37.74969,-122.42512 +/-3675m); p134R__2 (tier 4, 37.74969,-122.42512 +/-3675m); p135R (tier 3, 37.75941,-122.42864 +/-786m); p140R (tier 3, 37.74440,-122.41819 +/-786m); p142R (tier 3, 37.74764,-122.41229 +/-786m); p143L__2 (tier 4, 37.74969,-122.42512 +/-3675m); p143R__1 (tier 4, 37.74969,-122.42512 +/-3675m); p143R__2 (tier 4, 37.74969,-122.42512 +/-3675m); p145L__1 (tier 1, 37.75137,-122.40525 +/-250m); p145L__2 (tier 3, 37.74801,-122.39952 +/-1254m); p145R__1 (tier 3, 37.74801,-122.39952 +/-1254m); p145R__2 (tier 1, 37.75033,-122.40807 +/-250m); p146R (tier 1, 37.73858,-122.38963 +/-255m); p147L (tier 3, 37.73794,-122.39330 +/-786m); p147R (tier 1, 37.74003,-122.39151 +/-252m); p148L (tier 1, 37.73584,-122.39627 +/-267m); p148R (tier 1, 37.73570,-122.39644 +/-254m); p149L (tier 3, 37.73369,-122.39057 +/-786m); p150L (tier 1, 37.75220,-122.43276 +/-257m); p150R (tier 1, 37.75144,-122.43188 +/-261m); p151L (tier 1, 37.75599,-122.43005 +/-255m); p151R (tier 1, 37.75492,-122.43219 +/-259m); p152L__1 (tier 1, 37.76202,-122.43153 +/-254m); p152L__2 (tier 3, 37.74897,-122.40235 +/-3054m); p152R__1 (tier 1, 37.76074,-122.43061 +/-216m); p152R__2 (tier 1, 37.76154,-122.43201 +/-156m); p153L__1 (tier 1, 37.75123,-122.43083 +/-265m); p153L__2 (tier 3, 37.75388,-122.42889 +/-786m); p153R (tier 3, 37.75388,-122.42889 +/-786m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0124L/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 | 1886 | sanborn00813_007 p124L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0124L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0124L","type":"ImageService3","width":1415,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1279.2,1911.9 791.8,1996.1 179.8,1977.0 89.7,1905.3 51.5,1603.5 148.1,923.9 37.7,500.4 36.2,126.5 573.8,121.9 751.0,121.9 1111.3,116.2 1351.7,112.3 1411.2,1048.4 1403.0,1048.5 1396.1,1509.8 1338.2,1510.3 1339.9,1740.8 1405.6,1938.2 1279.2,1911.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0124L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[948.0,1514.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43844294642004,37.762314054192565]}},{"type":"Feature","properties":{"resourceCoords":[71.0,134.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43535442171185,37.76410521690802]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0124R/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 | 1886 | sanborn00813_007 p124R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0124R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0124R","type":"ImageService3","width":1421,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1371.7,1982.9 1369.5,1477.0 1369.0,1009.1 1363.8,89.0 1302.8,91.0 489.2,94.2 94.4,98.4 23.5,99.1 77.0,1052.5 68.7,1052.5 58.5,1522.1 1.0,1522.2 1.0,1760.0 65.0,1958.2 196.9,1986.7 1371.7,1982.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0124R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43488000664149,37.76179758616011]}},{"type":"Feature","properties":{"resourceCoords":[1421.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43464054211283,37.75920138900699]}},{"type":"Feature","properties":{"resourceCoords":[1421.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43931734104079,37.75892795636055]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43955680556945,37.76152415351367]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0125L/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 | 1886 | sanborn00813_007 p125L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0125L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0125L","type":"ImageService3","width":1415,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"83.6,1463.1 79.3,997.0 66.6,80.5 99.0,77.7 893.8,78.6 1388.5,74.0 1414.0,73.8 1414.0,303.6 1403.8,549.1 1412.3,549.0 1411.9,1023.9 1408.8,1023.9 1409.0,1484.1 1392.8,1484.3 1414.0,1936.8 1229.2,2006.1 148.1,2009.0 90.0,1967.0 83.6,1463.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0125L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[82.0,1940.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43913810530312,37.75904312335741]}},{"type":"Feature","properties":{"resourceCoords":[82.0,1027.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43703376862261,37.759152495820686]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0125R/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 | 1886 | sanborn00813_007 p125R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0125R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0125R","type":"ImageService3","width":1399,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"48.0,1486.9 64.1,1486.7 67.9,1027.1 71.0,1027.1 75.5,552.8 67.1,552.9 79.4,307.7 81.4,78.2 442.1,77.9 1359.5,77.1 1362.0,432.9 1381.5,506.7 1382.2,537.0 1386.3,719.2 1374.6,737.9 1365.3,1034.0 1362.2,1034.0 1362.2,2000.7 1027.0,2010.2 65.1,1938.9 48.0,1486.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0125R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43446853026597,37.756999564049856]}},{"type":"Feature","properties":{"resourceCoords":[1399.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43422960154157,37.754430734844604]}},{"type":"Feature","properties":{"resourceCoords":[1399.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4389295676775,37.754153605958486]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4391684964019,37.75672243516374]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0126L/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 | 1886 | sanborn00813_007 p126L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0126L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0126L","type":"ImageService3","width":1410,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"957.4,93.8 1377.5,94.2 1373.1,1006.4 1373.2,1973.0 65.9,2005.5 68.0,1044.3 71.2,1044.3 81.0,749.8 92.8,731.3 89.2,550.0 88.6,524.9 88.5,520.0 69.2,446.4 67.3,92.7 95.8,92.8 103.2,92.8 112.8,92.8 941.8,93.8 957.4,93.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0126L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[943.0,1972.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43861587035086,37.75262313528429]}},{"type":"Feature","properties":{"resourceCoords":[54.0,130.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43450313076765,37.754512009177446]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0126R/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 | 1886 | sanborn00813_007 p126R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0126R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0126R","type":"ImageService3","width":1415,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1358.5,2012.1 799.0,2015.0 435.3,1965.7 51.3,1976.5 49.4,1004.4 52.1,87.1 1355.2,84.5 1358.5,2012.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0126R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43399285334426,37.75219831429166]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43375030771763,37.749600130642975]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43844992159246,37.749321969414446]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4386924672191,37.75192015306313]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0127L/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 | 1886 | sanborn00813_007 p127L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0127L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0127L","type":"ImageService3","width":1410,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"57.2,2017.2 40.5,82.5 1353.8,72.2 1409.0,71.8 1409.0,271.0 1409.0,289.1 1394.2,1033.0 1360.2,1033.2 1366.5,1980.2 1409.0,1979.8 1409.0,2002.4 57.2,2017.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0127L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[495.0,1973.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43822996067561,37.7486389538871]}},{"type":"Feature","properties":{"resourceCoords":[938.0,1039.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43601384059849,37.74794911053985]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0127R/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 | 1886 | sanborn00813_007 p127R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0127R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0127R","type":"ImageService3","width":1415,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"78.8,1030.4 114.3,69.6 133.2,69.8 377.2,76.8 450.1,91.1 492.1,106.5 501.3,91.1 1376.1,73.5 1320.0,294.6 1399.2,405.4 1357.5,461.3 1401.1,1602.2 1352.1,2006.8 77.9,2000.1 77.3,1977.5 35.1,1977.1 45.1,1030.1 78.8,1030.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0127R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43357874446517,37.74742441149886]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4333035689985,37.74483793125566]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43798171038279,37.74452232833499]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43825688584946,37.74710880857819]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0128L/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 | 1886 | sanborn00813_007 p128L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0128L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0128L","type":"ImageService3","width":1410,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1379.5,1936.0 1175.3,2002.9 70.0,1962.2 69.5,1964.2 65.2,1095.2 54.3,1039.5 49.0,78.1 488.4,75.2 1299.6,71.8 1364.5,70.5 1369.9,1030.5 1406.0,1030.3 1393.5,1937.7 1379.5,1936.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0128L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[491.0,109.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42903667298842,37.74435398747694]}},{"type":"Feature","properties":{"resourceCoords":[491.0,1967.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43332687945738,37.74411564747239]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0128R/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 | 1886 | sanborn00813_007 p128R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0128R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0128R","type":"ImageService3","width":1415,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"82.6,1030.3 46.6,1030.6 40.1,68.8 476.1,65.3 476.7,144.3 1414.0,137.2 1414.0,184.5 1375.3,185.1 1320.2,1202.7 1360.3,1582.9 1277.5,1932.5 655.1,2008.2 71.3,1939.3 82.6,1030.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0128R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4286536566662,37.74284629876742]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42843011802508,37.740248800846324]}},{"type":"Feature","properties":{"resourceCoords":[1415.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43312789882928,37.7399924052594]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4333514374704,37.742589903180495]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0129L/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 | 1886 | sanborn00813_007 p129L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0129L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0129L","type":"ImageService3","width":1410,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"54.8,72.6 498.2,74.7 1109.5,110.0 1367.8,80.5 1362.7,1035.8 1375.8,1036.0 1377.1,2011.5 1357.3,2011.4 48.1,2005.9 54.8,72.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0129L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[489.0,1052.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4316765181018,37.74903447294178]}},{"type":"Feature","properties":{"resourceCoords":[489.0,110.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42950634561116,37.74917183625047]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0129R/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 | 1886 | sanborn00813_007 p129R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0129R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0129R","type":"ImageService3","width":1408,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1335.2,1039.0 1345.8,1094.3 1346.8,1956.2 1337.6,1994.7 474.2,2021.7 468.6,2037.0 465.3,2037.0 463.1,2022.0 423.7,2022.2 351.6,2009.0 110.6,2004.7 53.1,2004.8 46.0,1038.8 33.1,1038.7 32.5,92.7 409.8,46.8 410.1,89.3 834.0,88.7 1333.5,85.5 1335.2,1039.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0129R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42906614541502,37.74764818645266]}},{"type":"Feature","properties":{"resourceCoords":[1408.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42882537527534,37.745038671302915]}},{"type":"Feature","properties":{"resourceCoords":[1408.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43356866201948,37.74476115652332]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43380943215917,37.74737067167306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0130L/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 | 1886 | sanborn00813_007 p130L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0130L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0130L","type":"ImageService3","width":1410,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"946.7,1983.5 931.1,1983.4 100.9,1981.1 83.8,1981.0 55.4,1980.9 57.1,1014.6 63.2,62.9 498.6,58.6 528.5,58.9 1369.9,60.8 1366.2,1070.0 1367.5,1984.5 946.7,1983.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0130L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[487.0,1024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43212081188402,37.753839903953136]}},{"type":"Feature","properties":{"resourceCoords":[487.0,93.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42996566872338,37.753973322212026]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0130R/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 | 1886 | sanborn00813_007 p130R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0130R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0130R","type":"ImageService3","width":1408,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"28.9,1982.0 31.3,1062.4 39.1,47.5 469.9,57.5 860.6,52.0 1345.0,54.1 1333.9,1989.2 28.9,1982.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0130R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42962895060977,37.75244087905385]}},{"type":"Feature","properties":{"resourceCoords":[1408.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42936389123633,37.74986087821561]}},{"type":"Feature","properties":{"resourceCoords":[1408.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43405383334066,37.749555387101545]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43431889271409,37.75213538793979]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0131L/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 | 1886 | sanborn00813_007 p131L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0131L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0131L","type":"ImageService3","width":1410,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1376.0,1028.0 1373.6,1028.1 1378.8,1938.5 1380.0,1997.8 885.1,2000.7 89.8,1997.0 57.4,1999.7 56.7,1517.9 47.6,124.3 47.5,112.2 530.5,79.9 530.5,70.5 531.5,71.1 568.3,92.8 689.9,49.4 1256.1,110.8 1376.0,57.5 1364.0,95.2 1361.5,95.2 1370.5,674.3 1376.0,1028.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0131L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[51.0,1529.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43377149579261,37.75936494121676]}},{"type":"Feature","properties":{"resourceCoords":[492.0,104.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43041935400346,37.75874161755441]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0131R/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 | 1886 | sanborn00813_007 p131R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0131R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0131R","type":"ImageService3","width":1421,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1349.0,1023.2 1348.9,1984.0 440.4,1983.0 58.2,1982.7 57.4,1924.0 58.7,1024.0 61.1,1024.0 58.2,674.2 53.4,101.7 55.9,101.8 67.9,64.6 77.8,60.3 406.3,64.9 430.2,84.3 624.8,60.0 786.7,66.5 913.6,83.0 1353.2,76.8 1349.0,1023.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0131R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43003296343073,37.7572728965606]}},{"type":"Feature","properties":{"resourceCoords":[1421.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42978179769247,37.75463839519361]}},{"type":"Feature","properties":{"resourceCoords":[1421.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43452730667583,37.75435158391309]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4347784724141,37.75698608528008]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0132L/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 | 1886 | sanborn00813_007 p132L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0132L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0132L","type":"ImageService3","width":1410,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1093.3,2013.2 730.1,2012.2 551.6,2008.8 9.8,2003.4 37.5,99.5 64.5,97.0 79.1,44.1 404.1,35.1 1321.4,76.8 1402.0,99.7 1381.4,99.2 1370.5,1058.0 1390.8,1058.5 1409.0,1535.6 1392.8,2013.8 1093.3,2013.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0132L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[48.0,1984.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.43528993919837,37.76410357092405]}},{"type":"Feature","properties":{"resourceCoords":[1382.0,122.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4307128534943,37.76195303586748]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0132R/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 | 1886 | sanborn00813_007 p132R","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0132R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0132R","type":"ImageService3","width":1421,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1366.6,135.4 1354.0,1529.0 1347.2,2010.8 1285.9,2012.0 469.4,2005.5 73.1,2005.0 59.5,2004.9 75.5,1523.3 56.7,1042.8 36.3,1042.5 46.6,76.9 67.3,77.4 210.7,118.0 437.4,86.0 480.9,86.8 513.6,87.0 1367.0,94.0 1366.6,135.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0132R/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[473.0,1529.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.433917,37.7609581]}},{"type":"Feature","properties":{"resourceCoords":[1354.0,1529.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.433745,37.759356]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0133L/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 | 1886 | sanborn00813_007 p133L","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0133L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0133L","type":"ImageService3","width":1410,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1409.0,1978.0 1409.0,1982.8 932.4,2011.5 932.4,1982.5 90.7,1983.0 58.4,1983.1 51.0,1977.5 30.1,1058.0 67.9,1038.2 29.5,1034.4 17.2,498.1 82.2,27.9 1404.1,48.0 1390.2,1962.2 1409.0,1973.5 1409.0,1978.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0133L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[496.0,1982.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4305178,37.7603591]}},{"type":"Feature","properties":{"resourceCoords":[496.0,1042.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4283241,37.7604909]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0134L__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 | 1886 | sanborn00813_007 p134L [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4075.6"},{"label":"split_canvas_w","value":"5672.0"},{"label":"split_canvas_h","value":"4076.4"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0134L__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0134L","type":"ImageService3","width":1418,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1380.9,1993.5 1387.2,1993.6 1394.2,1521.0 1383.2,1520.8 1387.2,1050.5 1417.0,1041.3 78.6,1041.5 62.9,1049.8 27.7,1986.6 1.0,1986.2 1.0,1987.0 23.9,2005.5 219.1,1981.4 381.5,1988.0 508.8,2004.5 949.7,1998.7 1380.9,1993.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0134L__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[956.0,1532.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4288806066339,37.75480724843353]}},{"type":"Feature","properties":{"resourceCoords":[956.0,1070.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42780051390011,37.75487221173028]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0134R__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 | 1886 | sanborn00813_007 p134R [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4039.2"},{"label":"split_canvas_w","value":"5692.0"},{"label":"split_canvas_h","value":"4112.8"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0134R__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0134R","type":"ImageService3","width":1423,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1321.0,1039.5 1300.2,1021.1 609.1,1015.4 425.0,1111.4 182.2,1025.2 97.7,1024.8 67.7,1034.0 61.0,1510.7 72.2,1510.9 62.5,1990.0 85.9,1990.2 924.6,1993.9 1354.7,2003.5 1360.8,1040.0 1321.0,1039.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0134R__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1009.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42763316118456,37.754205849358016]}},{"type":"Feature","properties":{"resourceCoords":[1423.0,1009.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42736736384026,37.751593655575014]}},{"type":"Feature","properties":{"resourceCoords":[1423.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42973967935853,37.75144061572602]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.43000547670283,37.75405280950902]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0135L/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 | 1886 | sanborn00813_007 p135L","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0135L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0135L","type":"ImageService3","width":1418,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1339.7,1988.9 1405.0,1912.0 1417.0,1652.5 1393.3,80.9 704.7,36.7 85.1,64.7 16.5,483.7 21.6,1012.3 1.0,1012.2 1.0,1013.1 21.2,1030.6 61.5,1031.0 61.8,2000.9 456.8,1992.8 946.5,1991.8 1339.7,1988.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0135L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[508.0,1508.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.428466,37.750829]}},{"type":"Feature","properties":{"resourceCoords":[507.0,542.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.426251,37.750962]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0136L/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 | 1886 | sanborn00813_007 p136L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0136L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0136L","type":"ImageService3","width":1420,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"938.6,1988.0 1378.7,1990.0 1382.0,974.2 1387.2,78.0 949.8,75.5 951.4,11.2 511.6,8.8 508.0,73.0 110.1,70.8 28.5,505.7 45.3,1936.0 1.0,1941.0 1.0,1984.0 430.9,1987.0 938.6,1988.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0136L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[506.0,1955.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4290420319589,37.74595829037728]}},{"type":"Feature","properties":{"resourceCoords":[950.0,1036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42684106002058,37.745285664247675]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0136R/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 | 1886 | sanborn00813_007 p136R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0136R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0136R","type":"ImageService3","width":1423,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1367.0,275.7 1365.8,693.1 1360.4,970.9 1361.8,1427.2 1368.3,1587.4 1368.9,1989.8 932.1,1989.3 867.4,1990.2 59.2,1988.0 59.4,969.9 61.8,71.8 62.5,7.3 494.2,7.8 494.1,103.0 935.4,286.6 935.5,224.2 1367.0,275.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0136R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42439734948965,37.744754443231]}},{"type":"Feature","properties":{"resourceCoords":[1423.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42414293699015,37.74214816194046]}},{"type":"Feature","properties":{"resourceCoords":[1423.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42883022166757,37.741858002329955]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42908463416707,37.744464283620495]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0137L/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 | 1886 | sanborn00813_007 p137L","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0137L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0137L","type":"ImageService3","width":1420,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1371.1,572.7 1363.7,1574.5 1415.5,1562.5 1403.2,2012.2 1016.7,2010.9 1016.4,1963.5 71.1,1955.7 71.7,1876.6 73.3,1474.2 67.7,1314.0 68.8,857.6 75.8,579.9 78.6,247.6 631.6,80.7 625.8,46.3 1349.6,40.6 1383.0,51.0 1379.8,93.7 1376.6,149.2 1371.1,572.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0137L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[73.0,1512.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4278906,37.7420172]}},{"type":"Feature","properties":{"resourceCoords":[1370.0,623.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4255968,37.739795]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0137R/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 | 1886 | sanborn00813_007 p137R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0137R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0137R","type":"ImageService3","width":1423,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"64.2,1986.9 97.5,1986.3 449.6,1905.3 1110.8,1954.7 1290.6,1914.4 1357.9,1667.6 1366.7,132.4 1252.8,66.1 990.4,130.7 388.4,77.7 385.0,40.2 247.3,1.0 12.1,1.0 4.4,33.7 2.1,76.3 1.0,105.0 1.0,354.6 3.1,553.7 16.0,1551.8 67.3,1538.7 64.2,1986.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0137R/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[456.0,743.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42585212636698,37.738951090382045]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,1415.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4272264694248,37.73664931381622]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0138L/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 | 1886 | sanborn00813_007 p138L","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0138L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0138L","type":"ImageService3","width":1420,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"34.7,1429.0 17.9,1523.2 426.1,1783.1 437.1,1721.2 858.6,1848.5 843.5,1932.7 1419.0,1860.6 1419.0,1441.0 1407.5,1433.9 1382.0,910.0 1360.6,891.0 1392.7,851.6 1419.0,453.2 1419.0,219.4 1325.1,136.3 944.1,79.8 766.9,141.7 329.1,51.9 319.5,1.0 287.2,1.0 217.3,394.5 34.7,1429.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0138L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[900.0,1617.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4242494,37.7422434]}},{"type":"Feature","properties":{"resourceCoords":[29.0,1461.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4244014,37.7438436]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0138R/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 | 1886 | sanborn00813_007 p138R","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0138R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0138R","type":"ImageService3","width":1412,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"821.9,1916.7 852.9,1931.6 866.2,1900.1 1092.2,1938.7 1223.3,2001.4 1253.9,1611.8 1076.2,1412.4 1150.1,1100.1 1208.6,1106.5 1243.0,612.5 1180.1,530.1 1325.5,137.4 1163.6,61.6 444.9,26.4 167.3,185.6 1.0,164.2 1.0,165.1 82.7,242.3 87.3,471.1 69.2,862.5 38.5,901.8 60.0,920.0 95.1,1433.0 106.5,1439.7 114.9,1816.4 123.0,1817.5 821.9,1916.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0138R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42034136852871,37.742216414590345]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.41958066953177,37.73967500291186]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42422031003179,37.738806957391894]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42498100902873,37.74134836907038]}},{"type":"Feature","properties":{"resourceCoords":[999.0,462.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4208552,37.7402223]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0139L/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 | 1886 | sanborn00813_007 p139L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0139L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0139L","type":"ImageService3","width":1420,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"994.9,1970.8 48.5,1942.5 58.8,53.9 618.8,55.6 1358.8,61.0 1363.8,336.6 1375.6,364.4 1379.9,970.0 1383.7,1960.7 1380.5,2024.5 985.1,2024.2 994.9,1970.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0139L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[949.0,1946.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42459948290808,37.747036553405856]}},{"type":"Feature","properties":{"resourceCoords":[63.0,1006.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.42257587482243,37.74879400995774]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0139R/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 | 1886 | sanborn00813_007 p139R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0139R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0139R","type":"ImageService3","width":1412,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1347.0,534.4 1344.7,928.4 1339.6,1961.5 912.4,1959.2 911.5,2023.0 480.8,2020.5 482.4,1956.8 49.4,1954.4 51.5,965.8 50.8,361.5 39.3,333.7 36.0,58.6 139.5,53.5 444.1,56.1 492.4,38.4 532.6,7.8 576.1,2.6 701.1,80.6 808.9,53.1 791.5,124.3 1088.3,148.7 1311.5,93.6 1300.2,320.2 1377.7,529.0 1347.0,534.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0139R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42002373760951,37.74662491874985]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.41975465113765,37.74401178851476]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.42449099808164,37.743702510978004]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4247600845535,37.746315641213094]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0140L/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 | 1886 | sanborn00813_007 p140L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0140L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0140L","type":"ImageService3","width":1420,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1333.2,1906.3 1185.3,1905.7 1158.1,1905.7 803.3,1904.1 801.1,1844.0 806.3,1374.6 597.2,1373.0 596.6,1268.6 586.5,1209.2 504.4,1317.1 116.1,1326.7 158.2,1300.7 152.9,881.1 278.4,975.8 47.7,233.6 4.6,162.4 137.0,82.3 327.3,65.6 546.4,126.7 869.4,53.3 1291.0,93.8 1343.7,181.7 1301.4,227.7 1363.7,269.8 1306.8,675.1 1389.5,887.0 1363.8,1677.6 1411.2,1826.4 1333.2,1906.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0140L/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4146982,37.7459228]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4161956,37.7435824]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4204434,37.7452818]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.418946,37.7476222]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0141L/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 | 1886 | sanborn00813_007 p141L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0141L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0141L","type":"ImageService3","width":1420,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"268.4,1942.7 238.3,1901.9 221.2,1853.0 227.4,1546.1 223.6,1441.8 241.6,703.0 252.8,143.8 1361.2,168.7 1419.0,160.8 1406.9,179.4 1397.3,516.9 1342.5,535.7 1341.2,686.4 1389.4,689.6 1384.7,1295.0 1392.6,1292.0 1135.9,1723.2 1183.6,1850.5 1127.8,1827.4 1038.9,1772.2 925.9,1948.6 530.5,1693.7 478.3,1663.4 287.6,1963.5 268.4,1942.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0141L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[721.0,176.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.41927411600467,37.74895692674772]}},{"type":"Feature","properties":{"resourceCoords":[1209.0,176.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.41814187753154,37.7490407711669]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0141R/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 | 1886 | sanborn00813_007 p141R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0141R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0141R","type":"ImageService3","width":1412,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"73.6,147.8 73.7,166.4 61.6,166.3 54.9,502.9 1.0,521.6 1.0,672.2 48.5,675.1 49.0,1278.6 56.9,1275.5 1.0,1370.7 1.0,1422.4 362.1,1638.0 214.7,1694.8 972.1,1889.2 1055.8,1890.0 1085.6,1617.2 1129.1,1540.4 1268.2,1552.3 1291.7,1363.8 1306.7,1367.3 1139.4,1182.5 1195.0,1196.3 1200.2,693.2 1197.9,444.7 1211.9,414.3 1258.2,380.4 1271.0,352.5 1272.5,114.8 1172.2,86.5 981.1,165.3 530.8,82.9 74.5,147.7 73.6,147.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0141R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.41785731605354,37.74936522646402]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.4145915652851,37.749587605593035]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.41418848653606,37.74583419455803]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.41745423730451,37.745611815429015]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0142L/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 | 1886 | sanborn00813_007 p142L","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"22"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0142L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0142L","type":"ImageService3","width":1420,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"59.7,1744.8 30.8,774.1 83.2,34.5 1149.9,27.4 1348.4,86.5 1409.4,391.2 1419.0,1310.9 1419.0,1315.7 1310.6,1817.8 1123.5,1990.9 1136.9,1934.0 620.6,1936.0 365.6,1941.9 334.2,1928.0 298.8,1881.4 269.9,1868.8 25.9,1870.7 59.7,1744.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0142L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1276.0,1378.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.413571,37.747171]}},{"type":"Feature","properties":{"resourceCoords":[83.0,432.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4116135,37.7494348]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0143L__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 | 1886 | sanborn00813_007 p143L [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.35"},{"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":"5680.0"},{"label":"split_canvas_h","value":"8152.0"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0143L__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0143L","type":"ImageService3","width":1420,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"201.6,590.8 191.5,1358.8 236.1,1479.0 240.7,1478.7 365.8,1876.7 382.4,1872.8 402.9,1928.0 484.5,1924.6 1072.9,2005.9 1130.5,1944.0 1054.2,1624.6 1075.9,1291.5 1413.5,1261.5 1402.2,285.4 951.9,156.6 397.9,108.1 395.6,66.1 188.5,191.0 206.3,221.7 201.6,590.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0143L__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[191.0,1454.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.406239,37.7517347]}},{"type":"Feature","properties":{"resourceCoords":[191.0,192.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4033466,37.7519349]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0144L/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 | 1886 | sanborn00813_007 p144L","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0144L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0144L","type":"ImageService3","width":1420,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"121.0,1920.7 125.1,1937.0 70.8,1957.9 41.3,1411.8 120.6,940.6 62.0,840.5 75.7,165.9 319.4,147.4 632.5,281.0 961.2,305.6 1011.5,221.2 1374.4,137.4 1411.8,347.0 1386.4,346.9 1389.1,1004.7 1388.7,1742.5 630.2,1742.1 512.4,1792.2 121.0,1920.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0144L/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[121.0,1937.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4071699,37.7513209]}},{"type":"Feature","properties":{"resourceCoords":[121.0,197.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-122.4074723,37.7545172]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0144R/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 | 1886 | sanborn00813_007 p144R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0144R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0144R","type":"ImageService3","width":1412,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"454.1,1726.0 424.0,1744.2 56.5,1747.5 49.6,1009.0 40.3,350.5 65.8,350.4 26.1,140.9 337.5,66.5 731.8,33.5 971.1,107.9 1262.2,68.2 1323.2,152.9 1336.3,1652.5 1262.6,1875.4 583.1,1928.0 454.1,1726.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0144R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.40465193515648,37.75505453398103]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.40139565209185,37.755223757443005]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.40108889860282,37.751481512752044]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.40434518166745,37.75131228929007]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0146L/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 | 1886 | sanborn00813_007 p146L","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.41"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0146L/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0146L","type":"ImageService3","width":1420,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1410.4,346.9 1387.3,621.5 1321.8,693.4 1382.1,772.5 1382.3,807.5 1415.3,816.1 1410.8,1746.7 1332.2,1979.3 364.2,2013.9 83.7,1966.7 101.8,54.6 1319.8,61.5 1410.4,346.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0146L/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.39205703472788,37.739025080490556]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.39018320721607,37.74118812215383]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.38628492624912,37.73904644980878]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.38815875376093,37.73688340814551]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0149R/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 | 1886 | sanborn00813_007 p149R","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:05:35Z","modified":"2026-10-24T15:05:35Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0149R/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0149R","type":"ImageService3","width":1409,"height":2038},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"66.4,1865.2 38.5,1598.0 128.9,1408.0 78.8,1363.0 155.7,1128.9 63.9,1050.8 143.5,985.1 49.8,334.4 114.5,171.7 899.0,195.3 1203.9,103.5 1319.6,164.5 1342.0,525.2 1288.6,653.0 1348.1,888.5 1250.6,967.1 1361.8,1085.1 1369.0,1411.8 1362.7,1479.0 1263.7,1504.8 1330.8,1573.6 1339.5,1737.8 1248.4,1901.4 159.9,1933.0 66.4,1865.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364sm:g4364sm_g00813188605:00813_05_1886-0149R/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.38955804907043,37.73463468702118]}},{"type":"Feature","properties":{"resourceCoords":[1409.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.38689715898165,37.73312373563074]}},{"type":"Feature","properties":{"resourceCoords":[1409.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.38964118494168,37.73005841727448]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2038.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-122.39230207503046,37.731569368664914]}}]}}]}