{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn08740_019.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"San Antonio, Texas | 1952 | 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":"74"},{"label":"placed","value":"60"},{"label":"unplaced","value":"14"},{"label":"fit sources","value":"georef-snap 34, georef 21, georef-street 2, snap:0 2, streets-candidate 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 9 panels"},{"label":"unplaced pages","value":"p25A__2 (tier 1, 29.43075,-98.49133 +/-100m); p29A (tier 1, 29.43633,-98.48427 +/-269m); p50A (tier 1, 29.42127,-98.49996 +/-134m); p51A__2 (tier 1, 29.42195,-98.49836 +/-100m); p51A__3 (tier 1, 29.41989,-98.49517 +/-185m); p58A__1 (tier 1, 29.41710,-98.48868 +/-196m); p58A__2 (tier 1, 29.41966,-98.48796 +/-261m); p59A (tier 3, 29.42163,-98.48269 +/-460m); p60A (tier 1, 29.41961,-98.48051 +/-138m); p62A (tier 4, 29.42595,-98.49013 +/-1774m); p63A (tier 4, 29.42595,-98.49013 +/-1774m); p65A (tier 1, 29.41812,-98.48045 +/-132m); p66A (tier 1, 29.42742,-98.49326 +/-130m); p67A (tier 1, 29.41719,-98.47865 +/-269m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0010A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p10A","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0010A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0010A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"143.4,927.3 144.0,135.0 229.6,135.3 230.5,60.2 307.1,135.6 465.2,134.8 496.9,131.2 547.6,143.7 642.7,244.6 777.3,374.6 916.6,514.4 756.0,676.6 732.6,737.4 717.5,831.1 788.6,1103.9 315.9,1115.8 315.6,1112.8 140.6,1114.9 143.4,927.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0010A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[144.0,739.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4885353,29.4275644]}},{"type":"Feature","properties":{"resourceCoords":[144.0,135.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4885236,29.4292522]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0011A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p11A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0011A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0011A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"933.6,316.4 934.2,556.7 941.2,734.7 939.9,915.5 935.1,966.8 888.0,1192.3 502.2,1196.9 99.6,1197.4 159.7,1072.3 167.9,986.8 147.8,738.1 141.2,611.0 129.7,469.4 102.3,264.4 78.8,109.6 402.5,85.5 532.2,83.9 580.4,88.4 839.6,124.5 935.4,152.1 933.6,316.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0011A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[143.0,600.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49623467350261,29.425144546167687]}},{"type":"Feature","properties":{"resourceCoords":[488.0,926.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49742620178569,29.42426158260877]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0012A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p12A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0012A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0012A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"432.5,1062.4 216.9,1026.3 167.4,1021.4 178.8,921.5 171.4,657.5 167.9,608.8 144.6,479.9 66.7,161.8 107.5,149.8 320.4,133.8 546.8,122.5 834.6,122.8 902.3,123.0 896.3,322.3 965.1,319.4 619.4,666.0 658.1,942.9 677.9,1101.8 432.5,1062.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0012A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[187.0,1026.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49499286042237,29.42271607867825]}},{"type":"Feature","properties":{"resourceCoords":[677.0,1096.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49351487736467,29.422146082018504]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0013A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p13A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0013A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0013A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"176.8,853.0 154.6,565.7 532.1,231.2 461.2,229.8 480.0,25.2 491.8,25.9 629.7,30.6 608.3,443.0 613.1,492.3 626.7,529.9 725.1,687.1 1011.4,1114.7 1067.0,1191.0 1071.8,1219.0 191.0,1057.3 190.8,1055.3 187.1,1017.6 176.8,853.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0013A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[548.0,674.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49216866269606,29.422845806123625]}},{"type":"Feature","properties":{"resourceCoords":[643.0,1101.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49216082056817,29.421638313019216]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0014A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p14A","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0014A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0014A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"343.9,64.0 653.8,74.5 914.0,69.0 909.6,169.9 886.2,338.0 847.7,533.4 834.7,641.9 839.2,685.3 907.3,1022.5 931.7,1151.1 936.7,1191.6 582.2,1214.0 525.3,1138.8 231.5,716.4 130.4,561.0 116.1,523.6 110.4,474.4 124.5,61.8 343.9,64.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0014A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[630.0,738.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.490415,29.422397]}},{"type":"Feature","properties":{"resourceCoords":[914.0,69.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4890531,29.4240154]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0015A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p15A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0015A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0015A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"356.1,1158.4 334.4,1033.2 273.7,704.7 270.0,662.5 284.3,557.3 324.8,368.2 350.1,205.4 356.1,107.5 658.6,118.0 733.9,119.5 919.0,126.8 918.6,186.5 927.1,311.7 937.2,382.6 907.4,380.2 932.5,537.4 949.5,601.6 930.6,832.8 897.9,840.0 912.5,929.0 876.4,941.8 893.8,1162.8 877.1,1162.2 854.4,1188.7 831.3,1188.2 407.1,1206.2 360.3,1197.8 356.1,1158.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0015A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[755.0,114.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48778519218084,29.42375563298047]}},{"type":"Feature","properties":{"resourceCoords":[955.0,373.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48732752645071,29.422914960673562]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0016A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p16A","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.08"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0016A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0016A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"956.9,1212.1 927.2,1087.4 976.7,740.4 1027.3,718.2 1086.2,282.6 1068.4,165.0 767.2,94.5 471.2,88.7 467.1,135.4 259.1,200.1 230.9,145.8 239.6,1.0 220.3,1.0 103.7,726.7 160.2,728.9 225.6,1110.9 222.0,1238.0 284.2,1237.3 414.4,1226.0 488.0,1214.0 486.1,1245.2 649.3,1215.9 715.8,1197.0 956.9,1212.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0016A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[488.0,1214.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4873908,29.4228991]}},{"type":"Feature","properties":{"resourceCoords":[222.0,1238.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.487271,29.4236208]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0017A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p17A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0017A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0017A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"200.5,835.6 193.8,127.3 571.1,136.8 571.0,144.3 957.5,123.0 957.5,208.8 956.3,374.2 958.7,493.5 958.9,806.1 963.0,940.2 963.6,1153.0 582.9,1150.0 199.1,1149.1 200.5,835.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0017A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[572.0,833.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.50131958869915,29.426690782472523]}},{"type":"Feature","properties":{"resourceCoords":[572.0,1148.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.5014263156409,29.42581500276341]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0018A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p18A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0018A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0018A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"281.2,948.9 277.4,815.6 278.1,504.9 276.0,386.3 277.6,221.8 277.7,146.2 912.6,135.8 913.5,459.5 910.9,843.2 906.3,1178.3 873.5,1161.5 803.0,1143.3 705.5,1139.3 449.9,1143.3 281.3,1160.4 281.2,948.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0018A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[282.0,844.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.50007037963753,29.426570640311102]}},{"type":"Feature","properties":{"resourceCoords":[282.0,1161.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.50017589172799,29.425683802943578]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0019A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p19A","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.47"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0019A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0019A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"949.5,1217.7 562.2,1240.1 562.2,1232.5 184.0,1224.1 179.3,833.8 173.9,787.3 173.1,693.9 175.7,542.7 170.9,389.9 164.5,53.8 304.3,51.0 300.7,46.3 947.6,44.3 934.7,121.7 956.4,783.0 944.7,783.3 949.1,838.2 949.3,1167.2 949.5,1217.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0019A/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.5024493,29.4322135]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.498986,29.4318853]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.49945360000001,29.4281426]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.5029169,29.4284708]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0001A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p1A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.53"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0001A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0001A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"970.5,1162.2 924.2,1169.2 846.2,1165.3 710.0,1148.8 676.5,1183.3 586.4,1296.3 593.0,1249.5 273.8,1183.5 264.5,1029.8 76.6,1028.0 57.5,324.9 100.2,35.9 179.6,35.4 276.1,45.2 492.1,49.1 734.6,58.4 853.5,58.5 923.5,58.0 996.0,57.2 1011.8,315.6 1023.9,314.1 1000.6,931.0 1011.6,925.0 1016.1,1158.7 970.5,1162.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0001A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[510.0,642.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49585409676143,29.431934480133293]}},{"type":"Feature","properties":{"resourceCoords":[510.0,79.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49409138183283,29.431989954187706]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0020A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p20A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.68"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0020A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0020A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"229.3,1154.9 235.2,829.2 231.9,774.8 243.4,774.7 234.3,119.7 248.6,43.3 731.8,50.9 851.3,123.8 888.5,151.8 889.2,284.8 894.9,360.2 907.3,403.8 918.7,459.3 922.5,526.4 913.4,830.1 863.0,829.3 863.5,1114.8 862.4,1212.9 228.3,1214.5 229.3,1154.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0020A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[229.0,831.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4997389291454,29.429599946761584]}},{"type":"Feature","properties":{"resourceCoords":[861.0,831.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49770324369098,29.42944074548535]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0021A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p21A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0021A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0021A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"158.4,1086.8 169.6,1001.9 169.6,886.3 110.6,756.4 186.1,42.1 1069.6,61.8 1073.1,66.5 934.4,65.8 932.2,399.4 933.1,551.0 926.8,701.0 925.2,793.6 929.4,839.9 924.1,1233.8 551.8,1220.1 454.4,1222.4 156.6,1215.3 158.4,1086.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0021A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[163.0,443.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.50452590058751,29.431137942518394]}},{"type":"Feature","properties":{"resourceCoords":[547.0,1216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.50349769159715,29.42888327625345]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0022A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p22A","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0022A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0022A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.6,1038.2 104.0,694.9 67.1,554.2 135.9,116.2 432.6,121.0 529.7,117.9 900.7,128.6 896.9,824.0 890.9,1134.6 704.8,1130.2 645.0,1123.5 507.0,1102.4 508.3,1140.0 101.5,1135.8 77.6,1038.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0022A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[897.0,824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.502506,29.426793]}},{"type":"Feature","properties":{"resourceCoords":[511.0,121.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.5035445,29.4288667]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0023A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p23A","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0023A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0023A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"566.3,1030.8 534.1,1049.0 189.5,1268.5 179.6,1218.9 116.3,1219.9 132.6,1204.8 123.8,1035.8 157.6,976.9 122.9,603.8 167.6,155.9 126.5,69.2 175.9,66.8 949.0,63.9 948.8,445.8 947.3,779.0 944.8,1025.9 566.3,1030.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0023A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[563.0,449.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.490013,29.433218]}},{"type":"Feature","properties":{"resourceCoords":[178.0,449.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.490701,29.434109]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0024A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p24A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0024A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0024A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"150.9,1145.9 74.8,999.4 90.7,979.7 168.2,914.4 289.2,754.2 316.0,726.8 385.2,703.1 303.4,526.5 219.4,359.6 320.5,303.1 531.2,195.7 716.9,96.2 803.6,58.6 870.9,20.4 878.3,39.8 958.9,123.0 1014.2,346.7 984.5,402.3 936.6,387.0 961.9,793.3 962.2,830.1 784.0,1162.5 734.3,1142.9 629.4,1109.5 599.8,1103.3 559.4,1107.5 426.1,1174.4 365.5,1213.3 221.2,1286.2 150.9,1145.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0024A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[230.0,353.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49399161420386,29.431090245822613]}},{"type":"Feature","properties":{"resourceCoords":[951.0,216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49332609180041,29.433061407814733]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0025A__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p25A [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"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":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0025A__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0025A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"961.2,1132.8 1045.8,1133.5 1051.5,790.0 1087.0,724.9 1087.0,428.9 875.1,270.1 839.6,228.0 714.6,51.4 441.2,233.2 237.8,366.7 198.1,401.5 121.4,478.6 102.7,501.8 88.2,539.1 87.2,685.9 94.3,756.4 93.8,915.5 92.5,1130.2 522.9,1131.7 581.0,1134.0 961.2,1132.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0025A__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.49163211597623,29.432481210637455]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.48810351099387,29.43247377649879]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.488114027904,29.42863356376394]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.49164263288637,29.4286409979026]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0026A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p26A","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0026A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0026A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"156.0,1113.0 527.0,1108.2 897.1,1110.8 901.4,739.8 899.5,609.3 899.2,431.0 894.4,367.7 876.1,210.3 512.2,124.5 495.1,17.0 377.7,27.0 353.9,21.6 269.3,105.5 195.7,127.1 1.0,314.0 1.0,422.2 110.2,532.0 134.8,551.8 161.1,596.1 156.0,733.0 157.8,918.0 156.0,1113.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0026A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[156.0,733.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4869258,29.4289376]}},{"type":"Feature","properties":{"resourceCoords":[156.0,1113.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.486052,29.428179]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0027A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p27A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0027A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0027A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"578.7,1220.5 306.8,1257.4 250.1,1252.2 30.4,1213.0 108.2,832.7 186.2,451.7 261.9,65.1 264.8,51.3 1071.8,18.8 1071.5,36.1 1069.5,345.2 1065.4,792.5 903.3,811.4 812.4,1186.0 701.7,1203.7 711.2,1324.4 705.4,1349.0 578.7,1220.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0027A/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.48669969642084,29.434765215489794]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.48426969027676,29.43265437040113]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.48725591625491,29.430009826316756]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.48968592239899,29.432120671405418]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0028A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p28A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0028A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0028A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"164.5,637.0 161.9,506.6 160.8,328.4 155.7,265.1 590.2,264.1 890.3,262.5 919.9,262.7 919.0,640.6 917.7,1010.5 724.1,1012.7 162.0,1007.9 164.5,637.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0028A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[536.0,633.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4843548824268,29.43116567385107]}},{"type":"Feature","properties":{"resourceCoords":[536.0,1010.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48349184642792,29.43040907966441]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0002A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p2A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0002A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0002A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"927.0,208.4 901.3,459.7 874.4,740.3 873.9,740.3 887.5,1235.1 733.2,1216.3 490.0,1192.8 181.8,1154.6 113.0,1152.1 100.5,1153.4 88.7,922.2 77.9,928.6 81.2,317.2 69.3,319.0 45.4,63.8 72.4,62.6 260.0,54.1 627.1,50.4 807.3,51.6 928.8,41.5 927.0,208.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0002A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[507.0,79.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49401073211423,29.429395108210766]}},{"type":"Feature","properties":{"resourceCoords":[502.0,1224.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49763276466392,29.429396640964875]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0030A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p30A","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0030A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0030A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"74.6,1223.0 123.8,1221.1 894.2,1226.9 898.7,845.7 899.9,459.4 900.6,411.3 903.7,64.9 900.2,24.7 889.3,1.0 858.2,1.0 835.9,33.4 604.0,72.7 549.7,41.1 172.3,62.0 107.5,105.2 92.0,773.4 123.0,1017.2 74.6,1223.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0030A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[515.0,844.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.487978,29.434406]}},{"type":"Feature","properties":{"resourceCoords":[133.0,455.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.487645,29.435904]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0031A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p31A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0031A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0031A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"180.8,827.8 167.9,827.6 136.0,39.2 169.5,45.9 508.0,111.8 548.0,115.6 574.2,109.0 579.6,79.8 595.1,95.3 751.2,95.5 839.3,197.3 908.1,185.7 916.7,324.8 955.8,628.1 957.9,682.2 956.3,828.8 958.9,1207.2 532.6,1207.1 178.2,1208.0 180.8,827.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0031A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[534.0,1201.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48265977097122,29.432635845107107]}},{"type":"Feature","properties":{"resourceCoords":[961.0,1201.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48168612734388,29.43348552868983]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0032A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p32A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0032A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0032A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"94.9,834.0 96.6,687.1 94.5,632.9 55.6,329.1 47.0,189.6 117.5,177.6 226.5,96.2 467.9,100.0 614.2,28.8 814.8,39.4 875.9,100.7 1001.7,104.2 1024.6,624.5 990.4,740.0 1041.1,933.9 1023.8,1073.3 1061.2,1110.8 1013.5,1165.1 1050.0,1201.8 957.0,1213.8 524.5,1215.2 97.2,1213.2 94.9,834.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0032A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[526.0,1209.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48071160099457,29.434329426064224]}},{"type":"Feature","properties":{"resourceCoords":[96.0,1209.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48168939409766,29.43347501830712]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0033A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p33A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0033A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0033A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"294.9,1217.0 223.9,1249.5 202.2,1007.6 198.1,424.7 196.0,46.8 555.6,41.1 988.3,35.5 996.4,602.0 997.5,760.4 1052.7,1035.7 1055.0,1062.2 1022.1,1111.4 965.1,1056.2 620.9,1139.8 467.8,1174.0 449.2,1192.6 437.2,1180.8 294.9,1217.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0033A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[558.0,422.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48179783864336,29.43187058310309]}},{"type":"Feature","properties":{"resourceCoords":[558.0,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4826217722785,29.432605939347383]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0034A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p34A","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0034A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0034A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"42.9,840.9 44.2,683.6 45.0,121.0 474.7,123.8 909.8,123.2 1003.4,111.2 1017.8,125.7 1061.6,300.3 1055.9,953.4 993.8,1117.3 846.6,1257.1 743.6,1225.1 661.5,1140.3 577.8,1053.4 553.1,1015.0 93.3,1115.0 42.9,840.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0034A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[472.0,492.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4798703,29.433585]}},{"type":"Feature","properties":{"resourceCoords":[44.0,492.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4808362,29.4327379]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0035A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p35A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0035A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0035A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1087.0,816.0 1036.4,867.6 1021.0,1097.7 1012.9,1189.8 880.9,1198.5 95.8,1206.2 95.9,824.7 99.7,245.2 97.1,45.5 685.5,41.4 929.8,19.4 954.5,16.8 940.5,182.8 983.9,225.8 932.4,278.2 907.5,573.6 933.0,607.1 1017.7,697.4 1033.0,746.4 1035.4,815.3 1087.0,816.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0035A/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.48272270041049,29.431447668699843]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.48032865091483,29.429310942289863]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.48335139375233,29.426705445224208]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.48574544324799,29.428842171634187]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0036A__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p36A [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"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":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0036A__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0036A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"14.2,1011.1 51.0,1046.5 49.2,1048.2 50.6,1048.2 60.5,1055.9 111.0,1079.9 167.7,1086.3 319.0,1086.0 528.8,1088.5 974.2,1090.9 978.6,723.1 977.9,592.4 979.6,189.3 608.6,186.2 531.7,311.2 503.3,383.8 522.2,399.6 395.4,504.8 394.9,565.5 322.5,565.2 96.7,752.4 90.7,793.9 85.2,916.7 61.2,961.5 14.2,1011.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0036A__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[534.0,1089.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48061476608248,29.42762987171754]}},{"type":"Feature","properties":{"resourceCoords":[976.0,1089.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4792081787861,29.427634206885447]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0036A__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p36A [2]","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":"1594.8"},{"label":"split_canvas_h","value":"2262.0"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0036A__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0036A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"353.4,74.8 272.8,76.2 85.5,384.5 1.0,517.9 1.0,546.3 360.7,543.4 360.4,521.1 356.3,196.7 353.4,74.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0036A__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[349.7,81.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.47922238129549,29.431384897756956]}},{"type":"Feature","properties":{"resourceCoords":[269.8,81.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.47947225165565,29.4313876942693]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0037A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p37A","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0037A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0037A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"80.2,763.5 79.3,645.5 68.8,588.1 49.2,571.0 49.0,570.9 301.7,177.9 346.0,187.4 430.9,189.1 465.8,189.7 583.0,191.6 677.8,141.7 677.4,156.4 922.3,147.6 1051.8,205.7 1060.3,522.7 1016.1,815.5 1027.2,931.5 1005.6,931.5 1004.0,1098.3 356.1,1154.2 356.3,1096.2 79.0,1099.0 80.2,763.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0037A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[79.0,1099.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4792067,29.4301281]}},{"type":"Feature","properties":{"resourceCoords":[1005.0,195.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4762302,29.4326761]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0038A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p38A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0038A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0038A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"20.6,1079.3 113.0,1073.3 609.1,1155.0 609.7,1226.7 620.5,1229.1 645.2,1175.3 915.1,1161.7 979.0,1122.7 1003.9,1039.4 981.4,553.6 1017.0,229.9 995.4,1.0 973.3,1.0 971.5,170.4 309.6,227.0 309.9,167.7 26.6,170.4 24.7,576.8 25.2,708.5 20.6,1079.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0038A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[961.0,615.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.47625107721177,29.42891621704781]}},{"type":"Feature","properties":{"resourceCoords":[34.0,1079.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.47917159661047,29.427629847996705]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0039A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p39A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0039A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0039A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"310.1,1186.2 447.9,1173.5 938.5,1201.8 948.6,1133.8 950.0,1127.4 958.4,1087.2 996.6,945.7 1004.1,909.5 1003.9,629.4 1005.7,432.8 1005.5,38.9 797.5,36.9 647.4,37.5 591.2,31.2 541.0,7.6 534.4,1.0 458.1,1.0 287.8,147.8 217.9,205.7 121.5,118.8 155.3,278.7 229.1,653.2 221.6,687.6 250.1,763.4 294.9,962.7 310.2,1048.8 314.6,1134.9 310.1,1186.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0039A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[520.0,1136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48218412521565,29.424562900026444]}},{"type":"Feature","properties":{"resourceCoords":[1004.0,56.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48063614610425,29.427583553023105]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0003A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p3A","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0003A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0003A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"190.5,1133.9 315.4,1200.8 402.2,1212.9 656.7,1203.5 786.7,1202.5 931.6,1197.0 867.1,883.7 799.0,583.5 761.0,437.6 738.8,319.4 737.3,263.2 760.6,115.9 765.3,55.5 765.3,54.9 282.6,101.7 287.9,1.0 239.9,1.0 236.7,92.3 225.2,415.9 207.9,799.2 190.5,1133.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0003A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[448.0,777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.497272,29.426409]}},{"type":"Feature","properties":{"resourceCoords":[752.0,398.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.496213,29.427417]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0040A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p40A","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0040A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0040A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"69.0,1092.2 76.2,1056.3 75.0,778.5 76.0,583.6 74.4,193.0 512.4,192.8 602.5,186.4 1087.0,263.1 1087.0,332.8 1055.4,325.8 1025.2,1097.9 873.1,1088.5 500.4,1090.2 69.0,1092.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0040A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[518.0,638.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.479199,29.4263742]}},{"type":"Feature","properties":{"resourceCoords":[75.0,638.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4806326,29.4263771]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0041A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p41A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0041A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0041A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"168.7,912.5 368.0,800.1 375.9,752.8 290.8,725.5 263.9,698.7 175.6,540.6 89.3,410.0 127.2,409.6 67.9,352.7 211.8,109.9 289.1,54.6 348.8,28.4 577.4,28.4 953.2,22.4 952.4,794.2 863.5,931.7 651.5,1249.8 621.9,1268.9 441.0,1020.6 381.9,928.2 372.3,897.1 265.4,906.9 168.7,912.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0041A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[582.0,43.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48600840500414,29.428159257832174]}},{"type":"Feature","properties":{"resourceCoords":[579.0,1326.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48311199589898,29.42561742403567]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0042A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p42A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0042A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0042A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"118.2,586.4 70.3,590.2 32.2,567.0 29.2,522.9 123.0,332.9 168.9,244.1 215.8,145.9 247.8,153.7 358.8,150.0 668.6,120.9 715.9,188.1 810.3,372.5 847.1,453.2 873.1,536.6 885.7,612.1 899.8,732.0 920.4,1166.3 903.2,1214.8 829.2,1212.3 828.9,1193.2 107.0,1090.0 118.2,586.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0042A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[903.0,1198.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48327126862114,29.42277918641068]}},{"type":"Feature","properties":{"resourceCoords":[126.0,136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48481881387971,29.426145686259733]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0043A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p43A","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0043A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0043A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"72.5,1199.7 72.4,1199.1 89.7,1151.1 71.1,720.9 57.6,602.2 53.8,578.5 184.8,532.1 669.5,438.6 662.6,370.0 660.7,322.2 663.0,175.0 1086.5,67.3 1078.8,108.8 1075.3,358.8 1076.5,496.6 1071.6,731.5 1074.3,938.2 1071.3,1201.8 859.0,1201.8 697.6,1199.3 721.8,1230.3 72.5,1199.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0043A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[266.0,1197.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4826825,29.4226083]}},{"type":"Feature","properties":{"resourceCoords":[663.0,175.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4806554,29.4250968]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0044A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p44A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0044A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0044A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"679.1,1272.2 652.3,1279.5 361.7,1203.8 71.1,1123.5 142.2,869.4 193.1,668.8 258.6,442.8 293.1,309.2 361.2,68.3 379.4,30.2 757.3,35.0 911.4,47.2 909.2,84.4 938.6,390.6 904.7,390.1 902.5,535.7 943.7,701.4 923.3,1094.2 893.0,1176.2 834.3,1204.5 865.5,1324.8 679.1,1272.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0044A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[57.0,1129.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48023572305034,29.422032427446545]}},{"type":"Feature","properties":{"resourceCoords":[373.0,46.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.47927888561607,29.42505550299535]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0045A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p45A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.68"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0045A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0045A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"184.6,1253.8 197.9,458.1 193.4,457.9 176.7,96.5 553.2,75.5 926.8,56.8 938.5,215.2 953.6,448.3 931.1,448.9 940.0,826.6 934.5,826.6 941.3,1249.2 869.9,1234.9 777.7,1215.2 745.2,1212.9 560.8,1212.5 365.8,1223.1 289.0,1247.1 235.2,1250.6 184.6,1253.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0045A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[928.0,84.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.50018863449999,29.425608718032013]}},{"type":"Feature","properties":{"resourceCoords":[169.0,77.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.50263137997568,29.42598032394528]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0046A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p46A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.60"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0046A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0046A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"781.4,1349.0 758.8,1349.0 756.8,1349.0 747.2,1221.9 239.2,1237.3 239.6,1260.2 198.9,1251.0 201.6,834.0 207.1,834.1 206.7,461.4 228.8,461.3 219.2,231.0 211.2,74.5 374.8,51.6 623.7,38.3 718.9,38.6 788.3,53.8 820.9,68.9 834.3,469.4 851.3,853.0 856.1,1043.6 781.4,1349.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0046A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[843.0,80.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49810902829128,29.425413731152023]}},{"type":"Feature","properties":{"resourceCoords":[211.0,80.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.50018098320717,29.425670116676848]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0047A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p47A","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.55"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0047A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0047A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"109.2,1026.2 152.4,833.0 161.0,195.2 134.5,103.9 550.5,90.7 547.5,52.4 689.4,68.0 750.8,72.2 941.2,68.7 947.0,442.0 951.6,442.3 912.6,1262.4 909.5,1262.5 585.1,1273.7 584.5,1239.7 186.3,1245.9 109.2,1026.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0047A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[947.0,442.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.5027554,29.4248995]}},{"type":"Feature","properties":{"resourceCoords":[561.0,66.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.5038092,29.4260684]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0048A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p48A","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.35"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0048A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0048A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"543.8,36.2 543.8,69.5 861.5,65.1 911.5,64.5 909.6,1199.6 543.0,1250.2 139.9,1223.2 144.8,923.9 92.0,669.6 142.4,389.2 99.8,182.0 163.6,63.9 153.8,34.2 543.8,36.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0048A/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.5059622,29.423124]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.5024659,29.422781]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.50295460000001,29.4190023]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.5064509,29.4193453]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0049A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p49A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.68"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0049A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0049A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"166.2,84.4 170.5,84.4 225.1,83.8 304.1,63.9 501.8,63.9 688.3,74.3 721.0,78.4 813.1,103.4 926.0,132.6 908.0,1217.0 356.1,1248.7 174.3,1220.3 161.2,1222.1 166.2,84.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0049A/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.5035599,29.422943]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.5000706,29.4226092]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.50054610000001,29.418838]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.5040354,29.4191718]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0004A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p4A","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0004A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0004A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"442.2,1189.8 232.2,1204.0 174.4,890.4 112.8,589.8 78.0,443.4 58.4,325.2 58.0,269.1 84.3,122.8 90.3,62.7 365.4,75.8 611.8,89.1 774.7,83.0 790.4,174.3 791.9,182.8 816.5,325.0 838.8,493.7 844.4,580.3 842.8,708.8 843.9,838.4 856.6,1207.1 643.9,1173.8 601.0,1176.0 442.2,1189.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0004A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[601.0,719.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4945396,29.4264628]}},{"type":"Feature","properties":{"resourceCoords":[601.0,1176.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4946049,29.425175]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0051A__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p51A [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":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"4323.6"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0051A__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0051A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"999.8,1061.6 1026.0,716.4 1069.5,253.3 1085.2,35.0 921.7,70.2 683.3,124.9 508.2,171.9 328.4,211.2 276.4,218.0 42.0,221.9 83.8,412.4 63.8,814.6 65.5,820.6 127.5,824.5 153.7,880.6 165.3,880.5 165.3,883.0 165.7,906.4 199.0,977.8 676.9,1037.3 775.8,1054.7 961.4,1078.8 997.8,1079.9 999.8,1061.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0051A__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1017.0,713.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49597523093274,29.420995464328254]}},{"type":"Feature","properties":{"resourceCoords":[129.0,654.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49863092125419,29.421971067315074]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0052A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p52A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0052A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0052A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"675.4,73.0 773.9,81.4 957.9,88.7 966.0,89.0 993.6,86.5 993.5,90.1 991.1,225.0 931.6,254.8 995.3,442.9 1024.9,439.9 1019.0,1128.4 938.0,1200.8 751.3,1233.0 244.3,1217.9 122.3,1164.3 103.8,1054.0 160.3,961.6 194.7,348.0 163.3,243.5 208.6,68.5 201.9,57.0 675.4,73.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0052A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[983.0,75.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49643650538488,29.420079592308905]}},{"type":"Feature","properties":{"resourceCoords":[983.0,1183.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49792836737575,29.417181185755208]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0053A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p53A","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0053A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0053A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"808.5,39.4 753.1,62.7 714.7,65.7 339.4,67.2 214.0,66.0 211.1,415.3 238.8,412.0 33.5,1268.3 95.3,1265.4 326.9,1254.6 750.0,1245.0 887.2,1238.0 916.3,1240.5 926.9,1242.2 1003.8,903.0 1087.0,536.0 1087.0,399.2 1041.2,183.1 1037.9,183.0 924.8,1.0 883.0,1.0 808.5,39.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0053A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[750.0,1245.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.493824,29.420024]}},{"type":"Feature","properties":{"resourceCoords":[214.0,66.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.489798,29.420984]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0054A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p54A","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0054A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0054A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"816.5,1226.2 531.5,1194.7 218.0,1217.2 179.9,1236.0 183.6,1099.0 184.3,1077.0 182.4,731.2 188.2,266.7 186.0,48.0 236.2,46.0 456.2,52.1 706.4,57.4 717.4,92.8 736.1,153.4 804.2,373.5 918.9,778.3 959.9,908.5 964.7,937.2 966.3,953.2 958.8,1300.8 910.0,1283.2 824.5,1242.4 816.5,1226.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0054A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[532.0,451.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4945473,29.4213092]}},{"type":"Feature","properties":{"resourceCoords":[186.0,48.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4950505,29.4227438]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0055A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p55A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.54"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0055A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0055A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1053.0,1202.5 877.0,1287.3 710.4,1270.0 683.7,1223.1 327.5,1213.9 200.4,1062.6 117.4,1069.4 54.2,971.5 60.9,632.3 7.7,575.0 102.3,589.9 154.8,593.0 64.0,253.6 62.0,248.6 395.2,138.8 804.5,3.8 932.0,221.9 924.5,231.4 918.4,239.0 918.7,295.1 892.9,326.1 941.8,413.7 1001.6,534.5 1013.1,591.6 1087.0,593.6 1087.0,872.2 1053.0,1202.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0055A/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.49354695053901,29.420176906427297]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.49088791964756,29.418218422854764]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.4936581931711,29.41532421038181]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.49631722406255,29.417282693954345]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0056A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p56A","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0056A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0056A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"89.2,290.9 1.0,288.9 1.0,307.3 44.9,312.9 54.7,1186.8 360.6,1255.7 393.4,1297.0 402.1,1338.4 502.8,1193.5 873.5,1085.6 959.1,1092.0 1018.9,1096.3 998.8,1069.7 1021.6,1054.1 1034.2,1038.9 866.7,672.2 934.6,580.6 777.4,450.9 797.9,422.5 953.2,559.0 1086.9,369.8 883.0,257.9 880.1,259.4 734.6,94.0 682.3,1.0 681.7,1.0 682.2,23.7 462.2,145.0 453.1,137.3 445.7,131.1 390.1,130.1 360.1,103.9 271.9,150.3 150.4,206.8 93.5,216.8 89.2,290.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0056A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[83.0,551.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.491461,29.416476]}},{"type":"Feature","properties":{"resourceCoords":[83.0,1199.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4898221,29.4153398]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0057A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p57A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0057A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0057A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"933.0,1278.9 900.0,1280.1 900.1,1252.8 899.0,1221.5 894.9,1233.9 501.6,1162.7 465.5,1055.5 271.1,1110.1 259.5,1077.4 458.4,1028.2 380.1,812.2 364.4,820.1 368.1,781.5 336.5,702.6 318.7,645.9 319.4,607.8 353.1,238.4 366.0,115.2 411.1,130.4 833.6,176.2 856.4,180.1 882.9,157.2 899.2,160.3 881.0,440.9 924.2,1109.2 897.9,1144.2 943.6,1188.8 1009.4,1184.6 933.0,1278.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0057A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[482.0,1116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48963105708648,29.418125917369974]}},{"type":"Feature","properties":{"resourceCoords":[378.0,128.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48976156481186,29.420945389239154]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0005A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p5A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0005A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0005A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"968.1,1211.1 374.9,1227.2 373.9,1206.4 197.4,1200.3 196.5,1193.0 184.4,1101.5 173.6,983.3 173.4,808.0 166.8,450.8 157.1,268.4 152.1,172.3 148.9,105.0 333.8,105.5 526.0,112.4 516.0,184.1 528.2,219.9 615.3,398.2 638.2,495.8 648.4,518.6 811.6,517.1 966.8,517.8 966.0,733.5 967.0,1071.1 968.1,1211.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0005A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[164.0,708.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49394775518844,29.429347777536858]}},{"type":"Feature","properties":{"resourceCoords":[335.0,108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49338343699418,29.431044530280886]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0061A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p61A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.26"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0061A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0061A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.3,1211.6 169.9,1054.2 217.6,846.3 287.4,552.0 352.6,257.9 344.4,231.3 390.3,42.4 411.1,36.1 1050.1,57.5 1072.8,227.6 952.0,717.2 1037.7,890.9 923.8,1000.4 911.1,1093.2 964.5,1101.8 951.1,1160.6 820.1,1138.8 758.8,1218.0 672.3,1249.0 168.0,1190.8 166.9,1195.0 131.3,1211.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0061A/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.47748694772058,29.422607821150876]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.47755592128964,29.41957393903986]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.48184744904381,29.419649011253362]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-98.48177847547475,29.422682893364378]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0064A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p64A","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0064A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0064A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1039.8,1002.1 1018.0,1006.5 1014.9,694.8 1003.8,76.4 804.2,114.2 43.0,94.5 32.3,452.8 1.0,481.8 1.0,755.6 135.9,1117.5 289.1,1208.0 445.1,1162.7 797.9,1139.0 919.0,1099.3 1039.8,1002.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0064A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[524.0,684.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.487133,29.416428]}},{"type":"Feature","properties":{"resourceCoords":[524.0,876.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.487551,29.416034]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0068A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p68A","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.25"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0068A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0068A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"183.8,1112.9 73.8,860.6 73.0,169.8 754.3,135.6 997.3,159.2 1055.0,583.0 1036.6,1107.1 379.1,1146.0 183.8,1112.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0068A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[541.0,841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4792069,29.4127085]}},{"type":"Feature","properties":{"resourceCoords":[541.0,1090.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4792079,29.4120034]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0069A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p69A","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0069A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0069A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"986.0,70.8 978.9,424.0 776.8,721.9 613.9,715.5 397.7,941.5 227.8,941.6 179.7,868.4 135.1,445.1 73.3,286.3 96.6,127.5 60.4,82.6 56.0,61.0 366.1,57.8 981.4,46.7 986.0,70.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0069A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[762.0,564.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4839352,29.4153264]}},{"type":"Feature","properties":{"resourceCoords":[56.0,61.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4866713,29.4148292]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0006A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p6A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0006A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0006A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"786.0,1228.0 709.4,1206.3 431.0,1127.8 208.9,1077.2 212.0,709.6 216.6,580.4 223.6,452.6 221.8,366.1 206.8,197.2 188.3,54.6 188.2,53.3 364.7,60.0 365.6,80.9 959.1,66.6 959.6,165.4 959.5,578.6 958.8,790.1 960.6,989.4 949.8,1102.8 916.5,1260.7 786.0,1228.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0006A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[401.0,212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49315501079604,29.427503728207306]}},{"type":"Feature","properties":{"resourceCoords":[213.0,1058.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.49376918156338,29.42510995809042]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0007A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p7A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.38"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0007A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0007A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"278.8,1184.3 236.9,824.2 192.1,711.9 112.2,487.5 39.6,295.3 32.9,277.4 545.0,115.6 527.8,147.9 678.5,135.3 853.5,133.6 888.7,123.2 951.3,63.6 987.8,92.2 990.9,313.4 990.0,315.1 907.1,499.4 911.6,541.5 948.7,562.2 994.2,556.9 1001.8,1091.0 644.5,1172.0 524.3,1175.0 341.9,1181.0 278.8,1184.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0007A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[193.0,707.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4878852386244,29.425188031096773]}},{"type":"Feature","properties":{"resourceCoords":[530.0,1172.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48725002750841,29.423624570383634]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0008A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p8A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0008A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0008A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"581.1,1167.1 466.6,1154.0 264.9,1152.2 51.0,1147.4 50.1,1117.8 52.4,678.1 48.2,278.9 50.2,103.9 72.8,102.6 284.6,90.7 530.4,81.4 655.0,72.0 1022.8,142.2 1020.0,153.0 938.9,449.9 881.0,700.3 795.7,994.2 740.3,1203.8 581.1,1167.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0008A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[539.0,84.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48790065299228,29.425151209971403]}},{"type":"Feature","properties":{"resourceCoords":[57.0,655.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.48976050847419,29.42647118776648]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0009A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"San Antonio, Texas | 1952 | sanborn08740_019 p9A","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:43:29Z","modified":"2026-10-24T15:43:29Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0009A/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0009A","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"611.2,1125.3 173.7,1131.5 144.2,1132.9 144.1,716.7 142.8,475.9 142.6,135.8 575.3,137.6 633.7,139.9 1016.0,139.0 1012.1,927.0 1008.5,1113.6 611.2,1125.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034sm:g4034sm_g08740195201A:08740_01A_1952-0009A/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[633.0,1125.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4897648,29.4264839]}},{"type":"Feature","properties":{"resourceCoords":[1016.0,139.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-98.4885236,29.4292522]}}]}}]}