{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn08891_013.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Salt Lake City, Utah | 1950 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"121"},{"label":"placed","value":"95"},{"label":"unplaced","value":"26"},{"label":"fit sources","value":"georef-snap 71, georef 22, snap:0 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"8 sheet(s) cut into 17 panels"},{"label":"unplaced pages","value":"p0__1 (tier 2, 40.74027,-111.85969 +/-100m); p249 (tier 1, 40.77222,-111.86566 +/-269m); p250 (tier 1, 40.76388,-111.85026 +/-509m); p254 (tier 1, 40.76445,-111.88104 +/-259m); p255 (tier 2, 40.76065,-111.87813 +/-100m); p256 (tier 1, 40.76445,-111.87534 +/-259m); p263 (tier 1, 40.76234,-111.85533 +/-256m); p270 (tier 1, 40.75900,-111.87247 +/-254m); p271 (tier 1, 40.77623,-111.88060 +/-264m); p272__1 (tier 2, 40.75672,-111.87251 +/-100m); p272__2 (tier 1, 40.75766,-111.87133 +/-189m); p273 (tier 1, 40.77792,-111.87803 +/-132m); p275 (tier 2, 40.75901,-111.86389 +/-179m); p279__1 (tier 2, 40.75633,-111.85332 +/-298m); p279__2 (tier 2, 40.75633,-111.85332 +/-298m); p280 (tier 1, 40.74203,-111.87306 +/-237m); p300 (tier 2, 40.75290,-111.86065 +/-220m); p311 (tier 2, 40.74326,-111.86391 +/-189m); p324 (tier 1, 40.73581,-111.85000 +/-256m); p329__2 (tier 2, 40.73131,-111.87338 +/-100m); p329__3 (tier 2, 40.73131,-111.87338 +/-100m); p334__1 (tier 1, 40.73080,-111.85095 +/-380m); p338 (tier 1, 40.76230,-111.88680 +/-255m); p341 (tier 2, 40.72648,-111.85692 +/-100m); p343__2 (tier 1, 40.72897,-111.85160 +/-113m); p354__2 (tier 2, 40.74981,-111.85686 +/-496m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0000__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p0 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6524.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0000__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0000/info.json","type":"ImageService2","height":7796,"width":6524},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 0.0,5446.8 1988.0,5446.4 2028.8,7796.0 6524.0,7796.0 6524.0,-0.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0000__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3728.0,2424.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8565807,40.7705606]}},{"type":"Feature","properties":{"resourceCoords":[2320.0,2424.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8565798,40.7716893]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0235/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p235","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0235/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0235/info.json","type":"ImageService2","height":7796,"width":6592},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1205.4,6410.5 1198.5,7796.0 -0.0,7796.0 -0.0,-0.0 5534.0,0.0 5542.2,1548.3 5836.0,1551.9 6175.0,1552.8 6205.9,6354.4 1205.4,6410.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0235/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3628.0,3060.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8897753,40.7664613]}},{"type":"Feature","properties":{"resourceCoords":[6184.0,3060.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8883117,40.7664575]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0236/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p236","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0236/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0236/info.json","type":"ImageService2","height":7796,"width":6524},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"623.2,6175.6 -0.0,1509.0 -0.0,1509.0 -0.0,-0.0 6524.0,0.0 6524.0,6060.9 5626.8,6241.8 2145.2,6384.8 1143.2,6399.2 623.2,6175.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0236/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88867792770829,40.76778905154999]}},{"type":"Feature","properties":{"resourceCoords":[6524.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.884853267554,40.76779466375134]}},{"type":"Feature","properties":{"resourceCoords":[6524.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88484447482581,40.76430873743307]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88866913498009,40.76430312523172]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0237/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p237","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0237/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0237/info.json","type":"ImageService2","height":7796,"width":6592},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7796.0 -0.0,2819.1 741.0,2818.6 746.9,1471.6 5640.9,1414.1 5654.5,6221.3 5423.0,6222.9 4612.2,6234.4 4902.0,6336.5 3596.4,6507.2 737.9,6405.8 116.9,6522.1 125.4,7796.0 -0.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0237/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.89160262759418,40.76566938015058]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88774583087691,40.76565755173676]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88776417088458,40.76217848300028]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.89162096760185,40.762190311414095]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0238/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p238","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0238/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0238/info.json","type":"ImageService2","height":7796,"width":6564},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"910.8,6158.2 640.1,6157.3 690.1,1378.5 5673.8,1481.0 5633.9,6211.3 6564.0,6217.0 6564.0,6491.5 909.6,6452.3 910.8,6158.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0238/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88871925165029,40.76564412423046]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88485638275623,40.76567139619007]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88481391775483,40.76217193092762]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88867678664889,40.76214465896801]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0239/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p239","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0239/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0239/info.json","type":"ImageService2","height":7796,"width":6592},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1005.9,291.8 1875.5,304.3 1878.1,0.0 5889.2,58.2 5886.3,333.5 5670.6,332.8 5600.5,7059.5 938.2,6974.9 1005.9,291.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0239/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88597775980617,40.767298116174885]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88202661086238,40.76732999529267]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88197718088017,40.76376590658336]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88592832982395,40.763734027465574]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0240/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p240","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0240/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0240/info.json","type":"ImageService2","height":7796,"width":6564},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5667.1,7796.0 711.2,7796.0 659.3,281.8 877.6,278.8 875.7,0.0 6564.0,0.0 6564.0,253.6 5606.1,257.8 5667.1,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0240/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8829660755854,40.76730267255135]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87907916871359,40.7672827224641]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87911023410528,40.76376162037568]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8829971409771,40.76378157046293]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0241/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p241","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0241/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0241/info.json","type":"ImageService2","height":7796,"width":6592},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6592.0,7796.0 931.6,7796.0 921.3,297.5 6592.0,289.1 6592.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0241/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88019754315837,40.76730469148742]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87626122210361,40.76730464144093]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87626129970259,40.76375391405515]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88019762075736,40.76375396410164]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0242/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p242","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0242/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0242/info.json","type":"ImageService2","height":7796,"width":6564},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,7796.0 -0.0,-0.0 6564.0,0.0 6564.0,7796.0 0.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0242/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[780.0,184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8820596,40.7751206]}},{"type":"Feature","properties":{"resourceCoords":[5608.0,184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8820541,40.776249]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0243/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p243","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0243/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0243/info.json","type":"ImageService2","height":7796,"width":6592},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5485.0,7796.0 -0.0,7796.0 -0.0,-0.0 5852.7,0.0 5817.4,5111.2 5487.5,5107.4 5485.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0243/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8744202553234,40.767303876535586]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87050984125403,40.76731363335495]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87049471292947,40.7637862761484]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87440512699884,40.763776519329035]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0244/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p244","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0244/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0244/info.json","type":"ImageService2","height":7796,"width":6564},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"679.8,5059.7 1005.6,5062.3 1024.6,14.9 6564.0,0.0 6564.0,294.8 5717.6,295.7 5723.4,5054.4 5465.9,5054.8 5466.3,7164.4 1012.5,7190.4 1013.8,7796.0 685.1,7796.0 679.8,5059.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0244/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87156386237223,40.76731932506427]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86762076909868,40.76731972736884]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86762014265113,40.76374770787378]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87156323592468,40.76374730556921]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0245/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p245","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0245/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0245/info.json","type":"ImageService2","height":7796,"width":6592},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"992.4,282.9 1849.0,287.6 1850.8,0.0 5700.2,0.0 5664.8,5012.0 6592.0,5002.6 6592.0,5230.3 5663.4,5230.7 5649.3,7229.7 955.9,7249.0 953.1,7796.0 689.6,7796.0 706.6,5097.8 967.2,5099.0 992.4,282.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0245/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86871931982593,40.76730932145118]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86480668396732,40.76732899296541]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86477618255998,40.76379962769685]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86868881841859,40.76377995618262]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0246/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p246","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0246/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0246/info.json","type":"ImageService2","height":7796,"width":6564},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"803.6,5219.9 1721.3,5216.5 1720.6,4991.5 804.3,5003.8 823.6,50.6 6564.0,0.0 6564.0,379.4 5601.1,375.0 5580.7,5005.9 6564.0,5015.2 6564.0,5230.0 5579.7,5227.5 5571.2,7154.0 796.2,7122.2 803.6,5219.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0246/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86583076003795,40.7673482102315]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86188831655438,40.767358486428506]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86187231488657,40.76378708092754]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86581475837013,40.76377680473054]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0247/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p247","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0247/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0247/info.json","type":"ImageService2","height":7796,"width":6592},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"911.8,7796.0 879.8,5231.7 1877.4,5217.5 1873.7,4999.8 877.1,5007.2 818.7,313.8 1794.6,301.8 1789.5,0.0 5681.1,0.0 5728.8,4945.1 4893.9,4957.0 4894.1,5178.2 5731.0,5165.9 5756.8,7796.0 911.8,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0247/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86294850629098,40.76733198016842]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85904251790407,40.76729199100183]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85910452288388,40.76376863932211]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86301051127079,40.763808628488704]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0248/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p248","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0248/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0248/info.json","type":"ImageService2","height":7796,"width":6564},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5053.7 834.7,5042.3 789.7,98.3 6564.0,0.0 6564.0,7125.1 5683.9,7136.2 5693.0,7796.0 860.3,7796.0 836.7,5263.1 -0.0,5274.9 -0.0,5053.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0248/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86004950279798,40.767346533422455]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85615931592476,40.76730829794603]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85621885301352,40.76378413572301]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86010903988674,40.76382237119943]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0251/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p251","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0251/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0251/info.json","type":"ImageService2","height":7796,"width":6576},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"643.0,1309.8 3611.1,1430.2 4967.9,1258.2 4964.6,1443.2 5751.2,1451.3 5708.7,6146.1 634.1,6182.9 654.7,6582.2 997.5,6572.6 981.4,7796.0 -0.0,7796.0 -0.0,1428.3 643.0,1309.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0251/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3344.0,4576.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8896629,40.7614163]}},{"type":"Feature","properties":{"resourceCoords":[5752.0,4576.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8883063,40.7614171]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0252/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p252","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"1"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0252/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0252/info.json","type":"ImageService2","height":7796,"width":6564},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"751.2,1568.1 -0.0,1573.5 -0.0,1291.8 1014.8,1266.9 1021.2,1561.6 5730.6,1484.3 5807.1,5978.4 788.8,6043.0 751.2,1568.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0252/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8887357620549,40.76345837740674]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88486410851054,40.76340931859428]}},{"type":"Feature","properties":{"resourceCoords":[6564.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88494087221973,40.75991900793645]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8888125257641,40.75996806674892]}},{"type":"Feature","properties":{"resourceCoords":[804.0,4544.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8883063,40.7614171]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0253/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p253","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0253/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0253/info.json","type":"ImageService2","height":7796,"width":6552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"953.7,2997.0 1874.9,2975.7 1870.3,2704.8 952.3,2714.6 929.6,0.0 5617.8,0.0 5623.8,700.2 6552.0,699.4 6552.0,7366.7 5916.0,7367.8 5886.2,7796.0 5654.3,7783.6 5662.3,7366.2 988.7,7422.4 953.7,2997.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0253/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8859253738873,40.764117168476886]}},{"type":"Feature","properties":{"resourceCoords":[6552.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8820191540625,40.764094615226576]}},{"type":"Feature","properties":{"resourceCoords":[6552.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88205433566789,40.76054937188254]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88596055549269,40.76057192513285]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0257/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p257","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0257/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0257/info.json","type":"ImageService2","height":7796,"width":6552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7796.0 62.4,538.4 6037.9,630.8 6027.2,2693.1 5690.6,2692.3 5657.1,7401.9 6022.5,7413.8 6020.8,7796.0 -0.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0257/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87444250069235,40.76401356492414]}},{"type":"Feature","properties":{"resourceCoords":[6552.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87065899372293,40.764026214075216]}},{"type":"Feature","properties":{"resourceCoords":[6552.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87063926179704,40.76059235612476]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87442276876646,40.76057970697369]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0258/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p258","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0258/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0258/info.json","type":"ImageService2","height":7796,"width":6580},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5743.5,7796.0 853.5,7796.0 855.6,7397.1 491.1,7384.7 531.9,2685.1 867.8,2686.4 884.1,0.0 5507.5,0.0 5504.2,577.7 5774.4,577.5 5753.0,5220.6 5477.9,5219.2 5465.5,7410.5 5742.8,7419.2 5743.5,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0258/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87146667077518,40.76402251041763]}},{"type":"Feature","properties":{"resourceCoords":[6580.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86765895672258,40.76403984219045]}},{"type":"Feature","properties":{"resourceCoords":[6580.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8676320354221,40.76059869576496]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8714397494747,40.760581363992145]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0259/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p259","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0259/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0259/info.json","type":"ImageService2","height":7796,"width":6552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"675.5,7357.4 698.2,5176.5 972.0,5179.2 1020.5,0.0 5811.6,0.0 5747.4,7427.4 675.5,7357.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0259/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86871689993238,40.7640255724402]}},{"type":"Feature","properties":{"resourceCoords":[6552.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86490748785106,40.76405672554777]}},{"type":"Feature","properties":{"resourceCoords":[6552.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86485889108641,40.76059933965133]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86866830316774,40.76056818654376]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0260/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p260","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0260/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0260/info.json","type":"ImageService2","height":7796,"width":6580},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"835.1,7318.7 801.9,0.0 5613.2,0.0 5643.5,7247.5 5843.9,7487.9 6580.0,7501.3 6580.0,7796.0 837.0,7753.3 835.3,7368.6 835.1,7318.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0260/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86581595401472,40.76408791872698]}},{"type":"Feature","properties":{"resourceCoords":[6580.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86189362896131,40.76407820571906]}},{"type":"Feature","properties":{"resourceCoords":[6580.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86190871626428,40.76053352121039]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86583104131769,40.76054323421831]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0261/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p261","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0261/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0261/info.json","type":"ImageService2","height":7796,"width":6576},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5727.6,7435.5 1248.6,7429.7 967.1,7279.3 947.0,553.0 5748.6,630.7 5727.6,7435.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0261/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86303734015704,40.76405406613967]}},{"type":"Feature","properties":{"resourceCoords":[6576.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85910578404409,40.76406235236239]}},{"type":"Feature","properties":{"resourceCoords":[6576.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85909290519795,40.76050715121433]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8630244613109,40.76049886499161]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0262/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p262","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0262/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0262/info.json","type":"ImageService2","height":7796,"width":6580},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5662.7,666.2 5662.0,0.0 6580.0,0.0 6580.0,7456.9 4971.9,7430.8 4968.4,7650.3 806.9,7632.5 807.6,604.6 5662.7,666.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0262/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86007549474928,40.764088170618855]}},{"type":"Feature","properties":{"resourceCoords":[6580.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85619386327427,40.764087396170545]}},{"type":"Feature","properties":{"resourceCoords":[6580.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85619507212877,40.7605965993199]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86007670360378,40.76059737376821]}},{"type":"Feature","properties":{"resourceCoords":[3216.0,4304.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.858179,40.7621606]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0264/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p264","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0264/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0264/info.json","type":"ImageService2","height":7796,"width":6596},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"566.9,7796.0 547.8,0.0 6596.0,0.0 6596.0,7796.0 566.9,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0264/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.848601067543,40.745000068860165]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84125830876805,40.74499304485368]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84126918925035,40.73837120939416]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84861194802531,40.738378233400645]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0265/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p265","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0265/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0265/info.json","type":"ImageService2","height":7796,"width":6520},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1019.8,1500.1 1038.9,386.6 700.7,315.9 684.7,0.0 5968.2,0.0 5966.3,5091.4 5628.1,5088.4 5642.4,7063.6 639.6,7071.1 639.3,7796.0 -0.0,7796.0 56.0,1498.7 1019.8,1500.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0265/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.89157950301208,40.760696737535525]}},{"type":"Feature","properties":{"resourceCoords":[6520.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8878389191932,40.76070319485124]}},{"type":"Feature","properties":{"resourceCoords":[6520.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88782879728242,40.75729144347107]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8915693811013,40.757284986155355]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0266/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p266","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0266/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0266/info.json","type":"ImageService2","height":7796,"width":6596},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"541.9,6953.8 536.3,5015.2 868.1,5019.6 891.7,22.7 5657.9,37.9 5655.9,355.0 5655.9,355.0 5613.7,7067.0 541.9,6953.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0266/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88867681571315,40.760710160400286]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88482115606526,40.760729566335634]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88479108764916,40.75725336368845]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88864674729706,40.7572339577531]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0267/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p267","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0267/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0267/info.json","type":"ImageService2","height":7796,"width":6520},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5819.2,7145.4 916.8,7116.2 1008.6,0.0 5780.6,0.0 5706.7,4692.3 5819.2,7145.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0267/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88595827737419,40.76070395642221]}},{"type":"Feature","properties":{"resourceCoords":[6520.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88215146007762,40.76074235738386]}},{"type":"Feature","properties":{"resourceCoords":[6520.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88209126672267,40.75727016281366]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88589808401923,40.75723176185201]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0268/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p268","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0268/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0268/info.json","type":"ImageService2","height":7796,"width":6596},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"951.7,31.8 5679.0,0.0 5763.0,7796.0 921.1,7796.0 742.6,4683.6 699.8,452.5 923.8,463.3 951.7,31.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0268/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88299450828609,40.76076607758331]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87909128485083,40.76072842494499]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87914962593055,40.75720936447351]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88305284936581,40.75724701711183]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0269/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p269","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0269/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0269/info.json","type":"ImageService2","height":7796,"width":6520},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"832.0,0.0 6520.0,0.0 6520.0,7202.4 888.9,7248.5 832.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0269/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88011899019918,40.760758733781785]}},{"type":"Feature","properties":{"resourceCoords":[6520.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87631818123099,40.760729689159945]}},{"type":"Feature","properties":{"resourceCoords":[6520.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87636370879513,40.75726299265199]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88016451776332,40.75729203727383]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0274/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p274","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0274/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0274/info.json","type":"ImageService2","height":7796,"width":6596},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"857.4,0.0 5593.3,0.0 5592.8,389.5 6596.0,373.5 6596.0,6902.7 934.6,6973.6 938.5,7796.0 661.9,7796.0 654.5,6987.1 -0.0,7018.7 -0.0,364.7 865.2,410.6 857.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0274/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8686225589059,40.76075795649823]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86473941117039,40.7607324437588]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86477894199855,40.757231481237866]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86866208973406,40.7572569939773]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0276/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p276","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0276/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0276/info.json","type":"ImageService2","height":7796,"width":6636},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5604.9,6717.9 -0.0,6681.0 -0.0,405.6 1750.8,405.0 1750.8,113.0 5586.0,92.8 5608.4,4681.3 4685.3,4682.4 4687.1,5073.0 5605.5,5062.9 5604.9,6717.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0276/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86296119833312,40.760722248176165]}},{"type":"Feature","properties":{"resourceCoords":[6636.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85896881785882,40.760711364411776]}},{"type":"Feature","properties":{"resourceCoords":[6636.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85898558013014,40.7571336217905]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86297796060444,40.75714450555489]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0277/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p277","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0277/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0277/info.json","type":"ImageService2","height":7796,"width":6480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"42.1,5215.3 -0.0,4823.9 923.8,226.3 5474.0,251.0 5701.6,5204.8 5698.2,6815.8 911.2,6867.6 42.1,5215.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0277/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86015514888416,40.760773670072645]}},{"type":"Feature","properties":{"resourceCoords":[6480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85626692707991,40.760776434754916]}},{"type":"Feature","properties":{"resourceCoords":[6480.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8562625666776,40.757208118437475]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86015078848185,40.757205353755204]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0278/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p278","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0278/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0278/info.json","type":"ImageService2","height":7796,"width":6636},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"788.6,5268.9 -0.0,5291.5 -0.0,4906.8 764.8,4893.4 468.7,213.7 -0.0,219.3 -0.0,-0.0 6636.0,0.0 6636.0,7796.0 827.0,7796.0 788.6,5268.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0278/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8571436674889,40.7607602917191]}},{"type":"Feature","properties":{"resourceCoords":[6636.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85324590072352,40.76071167591109]}},{"type":"Feature","properties":{"resourceCoords":[6636.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85332077424071,40.75721869648106]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85721854100609,40.75726731228907]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0281/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p281","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0281/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0281/info.json","type":"ImageService2","height":7796,"width":6480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5724.1,7796.0 -0.0,7796.0 0.0,-0.0 267.8,0.0 266.7,700.4 885.6,765.5 886.6,0.0 6044.6,0.0 6036.8,2897.1 5738.6,2901.3 5724.1,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0281/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.89172910201192,40.75760134051919]}},{"type":"Feature","properties":{"resourceCoords":[6480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88788685969531,40.757612363760906]}},{"type":"Feature","properties":{"resourceCoords":[6480.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88786947486147,40.75408608057271]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.89171171717808,40.754075057330994]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0282/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p282","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0282/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0282/info.json","type":"ImageService2","height":7796,"width":6636},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5663.8,7796.0 769.3,7712.3 690.5,2869.1 985.4,2859.3 938.2,0.0 5573.2,0.0 5663.8,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0282/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88870705582204,40.757614968636794]}},{"type":"Feature","properties":{"resourceCoords":[6636.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88473132544598,40.7575680203935]}},{"type":"Feature","properties":{"resourceCoords":[6636.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88480362758071,40.754005018471396]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88877935795676,40.75405196671469]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0283/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p283","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0283/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0283/info.json","type":"ImageService2","height":7796,"width":6456},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5711.5,0.0 5659.1,7796.0 -0.0,7796.0 -0.0,7660.7 871.5,7680.5 956.9,0.0 5711.5,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0283/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88594441613876,40.75753671138495]}},{"type":"Feature","properties":{"resourceCoords":[6456.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88205725242486,40.75755828354477]}},{"type":"Feature","properties":{"resourceCoords":[6456.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88202310426719,40.753977518703635]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88591026798109,40.75395594654382]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0284/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p284","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0284/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0284/info.json","type":"ImageService2","height":7796,"width":6636},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"909.8,664.3 5676.5,672.9 5760.4,7770.0 995.2,7788.0 909.8,664.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0284/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88305037218551,40.75755091256153]}},{"type":"Feature","properties":{"resourceCoords":[6636.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87906145284592,40.75751792130522]}},{"type":"Feature","properties":{"resourceCoords":[6636.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87911226101467,40.75394312358515]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88310118035426,40.75397611484146]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0285/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p285","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0285/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0285/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"859.5,7796.0 962.3,0.0 5737.4,79.1 5632.0,7479.9 4577.9,7461.9 4576.1,7796.0 859.5,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0285/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88022101402927,40.75752527650925]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87635835059645,40.757567067947484]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87629194920494,40.753995584887186]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.88015461263777,40.75395379344895]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0286/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p286","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0286/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0286/info.json","type":"ImageService2","height":7796,"width":6660},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"874.1,0.0 3675.1,0.0 6660.0,0.0 6660.0,2749.3 5574.4,7576.3 858.4,7573.4 874.1,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0286/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87729046899106,40.75752552507438]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87336165221329,40.757531513256765]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87335241739652,40.754040723323236]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87728123417429,40.75403473514085]}},{"type":"Feature","properties":{"resourceCoords":[3280.0,5788.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8753487,40.7549368]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0287/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p287","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0287/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0287/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5865.0,4846.4 5814.1,7594.2 5562.8,7589.4 5561.1,7796.0 -0.0,7796.0 -0.0,89.5 5641.4,136.2 5591.1,4844.4 5865.0,4846.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0287/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8774087248886,40.75417793776964]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87351523358134,40.75420423412104]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87347345347249,40.7506041162001]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87736694477974,40.7505778198487]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0288__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p288 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2102.4"},{"label":"split_canvas_w","value":"6660.0"},{"label":"split_canvas_h","value":"5693.6"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0288__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0288/info.json","type":"ImageService2","height":7796,"width":6660},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6660.0,2296.0 325.6,2424.9 384.7,7650.1 4977.3,7566.8 4981.3,7796.0 6660.0,7796.0 6660.0,2296.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0288__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5992.0,5684.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8732654,40.740059]}},{"type":"Feature","properties":{"resourceCoords":[2704.0,7608.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8753437,40.7391725]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0288__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p288 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6660.0"},{"label":"split_canvas_h","value":"2165.2"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0288__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0288/info.json","type":"ImageService2","height":7796,"width":6660},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,2102.4 1627.0,2117.7 5999.3,1990.2 5990.6,0.0 5731.3,0.0 5734.6,289.3 -0.0,324.3 0.0,2102.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0288__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87736483653836,40.75072296052433]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87345562516562,40.75069160538047]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,2165.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.873468979444,40.74972256119363]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2165.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87737819081674,40.74975391633749]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0289/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p289","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0289/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0289/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1235.5,183.4 2049.6,200.1 2054.6,0.0 5758.6,0.0 5537.1,7796.0 770.7,7796.0 852.5,4941.0 1147.1,3774.2 1235.5,183.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0289/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87457873576327,40.75636602490336]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87075912076564,40.75644483848101]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87063389891384,40.75291307103087]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87445351391146,40.752834257453216]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0290/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p290","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0290/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0290/info.json","type":"ImageService2","height":7796,"width":6660},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4984.6,7529.3 4986.0,7796.0 -0.0,7796.0 -0.0,7560.5 1003.1,7553.7 1006.6,2816.5 729.2,2819.0 719.0,889.0 5453.7,725.7 5448.8,0.0 5801.4,0.0 5805.0,2774.8 5467.9,2777.8 5451.4,7524.3 4984.6,7529.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0290/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87442155142543,40.753251491356174]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87044114001543,40.753228869233546]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87047585134442,40.749674313931386]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87445626275442,40.749696936054015]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0291/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p291","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0291/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0291/info.json","type":"ImageService2","height":7796,"width":6428},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"718.5,2570.6 -0.0,2588.0 0.0,-0.0 5587.4,0.0 5570.9,7651.0 1051.2,7636.5 1050.6,7796.0 695.5,7796.0 718.5,2570.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0291/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87158982453424,40.757599866338346]}},{"type":"Feature","properties":{"resourceCoords":[6428.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86777359800648,40.7576079116184]}},{"type":"Feature","properties":{"resourceCoords":[6428.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86776080704598,40.75407718510022]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87157703357374,40.75406913982017]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0292/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p292","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0292/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0292/info.json","type":"ImageService2","height":7796,"width":6660},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"785.6,7796.0 757.4,808.5 1029.8,810.0 1030.2,0.0 5678.4,0.0 5699.1,7796.0 785.6,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0292/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86872347107331,40.75762429471313]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86474253802898,40.757613919748216]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86475845823756,40.754059096931464]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86873939128189,40.75406947189638]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0293/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p293","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0293/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0293/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"911.1,7563.3 1046.3,0.0 5608.1,0.0 5583.2,2572.1 5721.1,2912.8 5652.7,7640.6 911.1,7563.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0293/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86596119143823,40.757617081130796]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86205227646184,40.75766828100205]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8619714285763,40.754076390650226]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86588034355269,40.754025190778975]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0294/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p294","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0294/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0294/info.json","type":"ImageService2","height":7796,"width":6660},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6660.0,7546.1 6660.0,7796.0 1879.3,7796.0 1878.6,7593.9 1023.3,7602.6 967.4,2881.6 820.8,2545.1 778.5,0.0 5688.7,0.0 5769.3,7214.8 5855.5,7554.9 6660.0,7546.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0294/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86304485891758,40.757654118815836]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85901603048812,40.75762599088639]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85905919265362,40.754028427008244]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86308802108307,40.75405655493769]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0295/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p295","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0295/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0295/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1040.0,7556.0 945.7,5905.1 1029.5,0.0 5776.7,0.0 5743.1,2604.9 5578.4,3231.5 5679.7,3582.6 5670.4,4287.4 5565.1,4414.5 5653.4,5274.1 5547.2,7601.6 1040.0,7556.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0295/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86022750517765,40.75762510097061]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85631148906796,40.75766022902674]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85625602005318,40.75406178477147]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86017203616287,40.75402665671534]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0296/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p296","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0296/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0296/info.json","type":"ImageService2","height":7796,"width":6660},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"963.1,5301.0 845.3,4438.3 947.0,4306.8 932.5,3596.7 818.7,3246.5 963.4,2610.0 927.1,848.0 6609.5,817.3 6660.0,7031.9 5688.9,6948.5 5820.9,7534.5 1121.2,7644.3 1127.9,7796.0 938.6,7796.0 963.1,5301.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0296/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85727832508711,40.7576588726269]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85327975789258,40.7575925360551]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85338155008425,40.75402196105501]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85738011727878,40.75408829762681]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0297/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p297","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0297/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0297/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5559.1,213.5 5502.2,5029.9 5740.7,5032.5 5717.1,6812.7 587.9,6735.2 599.3,4974.9 940.1,4978.8 986.7,2173.6 636.4,2166.6 661.5,310.7 1017.6,314.2 1020.3,154.0 5559.1,213.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0297/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87155743731577,40.754206324262064]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86773190773877,40.75424326944879]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86767357180949,40.75072782731874]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87149910138649,40.75069088213201]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0298/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p298","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0298/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0298/info.json","type":"ImageService2","height":7796,"width":6660},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5590.9,338.9 5639.5,7796.0 954.6,7796.0 929.3,5001.1 691.8,5003.8 643.2,369.7 5590.9,338.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0298/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86864947503113,40.75423846474748]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86469632631214,40.75420939363587]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86474093318915,40.750679202865015]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86869408190815,40.75070827397663]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0299/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p299","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0299/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0299/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6472.0,200.2 6472.0,6848.6 5889.3,6855.1 5889.4,6878.6 896.7,6910.5 879.5,237.2 6472.0,200.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0299/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86586353284694,40.75425133012809]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86194977386069,40.75423425802715]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86197673005248,40.75063768275718]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86589048903873,40.750654754858125]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0301/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p301","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0301/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0301/info.json","type":"ImageService2","height":7796,"width":6496},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"690.4,6688.9 -0.0,6667.8 -0.0,3089.2 479.3,3086.5 536.1,0.0 5747.9,0.0 5645.2,7044.8 677.9,7068.0 690.4,6688.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0301/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87147155574436,40.751173154493785]}},{"type":"Feature","properties":{"resourceCoords":[6496.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8676911131972,40.751166086841984]}},{"type":"Feature","properties":{"resourceCoords":[6496.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86770223150336,40.747704854230946]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87148267405053,40.74771192188275]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0302/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p302","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0302/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0302/info.json","type":"ImageService2","height":7796,"width":6660},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5702.6,3189.8 5705.5,7030.0 874.5,7034.0 991.2,1082.7 5705.1,1128.4 5701.9,3016.7 6660.0,3015.0 6660.0,3205.1 5702.6,3189.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0302/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86871215528626,40.75118890245019]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86478333058768,40.75118890245019]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86478333058768,40.74769810547895]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86871215528626,40.74769810547895]}},{"type":"Feature","properties":{"resourceCoords":[3296.0,7032.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8667678,40.7480402]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0303/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p303","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0303/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0303/info.json","type":"ImageService2","height":7796,"width":6496},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"813.8,6744.1 813.5,2904.0 1770.9,2919.9 1771.0,2729.8 813.0,2730.9 820.4,0.0 5938.7,0.0 5936.4,2799.1 5686.5,2798.9 5692.0,6743.6 813.8,6744.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0303/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8658291585727,40.751060659778865]}},{"type":"Feature","properties":{"resourceCoords":[6496.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86199708057765,40.75106261990055]}},{"type":"Feature","properties":{"resourceCoords":[6496.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.861993981414,40.747571823721934]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86582605940905,40.74756986360025]}},{"type":"Feature","properties":{"resourceCoords":[3264.0,6744.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.863901,40.7480419]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0304/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p304","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0304/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0304/info.json","type":"ImageService2","height":7796,"width":6660},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2721.9,6692.6 302.6,6740.1 220.5,2822.9 469.9,2818.2 417.2,0.0 6103.5,0.0 6109.2,348.8 6660.0,337.3 6660.0,7482.4 5266.8,7511.0 5274.2,7796.0 2609.5,7796.0 2721.9,6692.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0304/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86257229964885,40.751083360130345]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85863752354757,40.75102669952651]}},{"type":"Feature","properties":{"resourceCoords":[6660.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85872446026947,40.74751276904214]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86265923637075,40.74756942964597]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0305/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p305","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0305/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0305/info.json","type":"ImageService2","height":7796,"width":6496},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 572.8,0.0 5768.4,394.3 5758.1,7796.0 3863.2,7796.0 -0.0,7796.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0305/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87159943648544,40.7482126862609]}},{"type":"Feature","properties":{"resourceCoords":[6496.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86776736049481,40.74821624896323]}},{"type":"Feature","properties":{"resourceCoords":[6496.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86776172747842,40.744725454610524]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87159380346905,40.74472189190819]}},{"type":"Feature","properties":{"resourceCoords":[3336.0,396.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8696312,40.7480372]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0306/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p306","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0306/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0306/info.json","type":"ImageService2","height":7796,"width":6660},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5694.4,422.9 5694.5,7090.8 898.1,7029.0 901.6,425.1 5694.4,422.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0306/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3304.0,5780.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8667666,40.7456274]}},{"type":"Feature","properties":{"resourceCoords":[3304.0,424.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8667678,40.7480402]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0307/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p307","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"2"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0307/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0307/info.json","type":"ImageService2","height":7796,"width":6496},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1843.1,7424.6 852.8,7423.4 863.3,407.2 5487.9,412.3 5345.1,7428.0 4867.4,7427.5 4863.6,7796.0 1837.8,7796.0 1843.1,7424.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0307/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3316.0,3944.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8638971,40.7464641]}},{"type":"Feature","properties":{"resourceCoords":[3316.0,408.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.863901,40.7480419]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0308/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p308","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0308/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0308/info.json","type":"ImageService2","height":7796,"width":6596},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5243.5,1484.3 5236.2,1198.5 6596.0,1171.0 6596.0,5533.6 5289.5,5591.6 5305.7,7036.4 1144.6,7078.7 1150.7,7375.0 -0.0,7397.4 -0.0,429.2 2684.6,377.3 2571.6,1483.6 5243.5,1484.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0308/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86261638563144,40.7482356521515]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85873008653067,40.748180463603966]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85881558178579,40.74467596782856]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86270188088656,40.7447311563761]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0309/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p309","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0309/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0309/info.json","type":"ImageService2","height":7796,"width":6496},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7605.7 -0.0,6249.4 0.0,0.0 5786.8,707.5 5783.1,7646.7 560.8,7796.0 -0.0,7605.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0309/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3348.0,3976.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8696286,40.7432703]}},{"type":"Feature","properties":{"resourceCoords":[3348.0,1676.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8696291,40.7442937]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0310/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p310","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0310/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0310/info.json","type":"ImageService2","height":7796,"width":6596},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6596.0,4691.3 6596.0,7552.4 861.8,7612.8 768.5,0.0 5603.3,0.0 5606.9,285.9 6596.0,272.9 6596.0,4691.3 6596.0,4691.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0310/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86865027172006,40.74506864935625]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86475925550369,40.745031745868665]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86481642203954,40.741522846258455]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86870743825591,40.74155974974604]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0312/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p312","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0312/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0312/info.json","type":"ImageService2","height":7796,"width":6596},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1622.9,295.3 1619.9,0.0 5766.7,0.0 5749.0,7515.0 -0.0,7542.9 -0.0,310.4 1622.9,295.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0312/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86297749367414,40.74505021304729]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8590770972753,40.74502504884271]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85911607863869,40.741507684988484]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86301647503753,40.741532849193064]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0313/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p313","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0313/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0313/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6388.3,7691.9 -0.0,7443.8 16.2,-0.0 2149.5,-0.0 2144.2,199.8 5059.0,284.5 5666.3,446.9 6441.4,459.3 6388.3,7691.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0313/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85504575003603,40.74577407786311]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85493608732095,40.74277869175862]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85966514762808,40.74267790497261]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85977481034315,40.7456732910771]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0314/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p314","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0314/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0314/info.json","type":"ImageService2","height":7796,"width":6596},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6385.2,7622.5 186.3,7620.3 69.4,559.5 6368.6,501.3 6385.2,7622.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0314/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85510553145403,40.742788001057626]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85512128471342,40.73981767197766]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85972239864707,40.73983187871564]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85970664538767,40.742802207795606]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0315/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p315","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0315/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0315/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6472.0,7538.4 6088.0,7542.5 6093.7,7792.3 -0.0,7796.0 -0.0,3055.9 169.3,3136.2 999.2,3128.6 998.3,2846.1 1115.4,2845.2 1025.3,1048.0 3324.4,1056.0 3315.8,196.1 5014.3,181.4 5011.9,-0.0 6472.0,-0.0 6472.0,1290.7 5944.2,1302.9 5978.8,2803.7 6472.0,2799.1 6472.0,7538.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0315/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86793530380122,40.74252026359567]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86800183355304,40.73676135777486]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87709325956678,40.736822506937536]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87702672981496,40.74258141275835]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0316/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p316","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0316/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0316/info.json","type":"ImageService2","height":7796,"width":6596},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6430.6,7765.9 1702.4,7796.0 1663.0,4558.4 -0.0,4580.6 -0.0,91.0 6342.4,22.1 6430.6,7765.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0316/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86916699797364,40.7416778832841]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86518991414843,40.741640525014816]}},{"type":"Feature","properties":{"resourceCoords":[6596.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86524778235913,40.738053835312776]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86922486618434,40.73809119358206]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0317/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p317","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"1"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0317/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0317/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"869.1,7414.1 868.8,47.3 5756.0,0.0 5735.8,7681.7 4272.6,7796.0 4272.6,7427.1 869.1,7414.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0317/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86585549108067,40.74165338978867]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8620375722934,40.74165031356834]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86204245416577,40.738159518563855]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86586037295304,40.73816259478418]}},{"type":"Feature","properties":{"resourceCoords":[3312.0,5592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8639052,40.7391479]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0318/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p318","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"1"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0318/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0318/info.json","type":"ImageService2","height":7796,"width":6612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5710.0,68.1 5817.5,7796.0 980.5,7796.0 885.7,148.7 5710.0,68.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0318/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86298283304964,40.74170829476412]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85908280440715,40.741661839090426]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85915496721283,40.73817147188083]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86305499585532,40.73821792755453]}},{"type":"Feature","properties":{"resourceCoords":[3380.0,3912.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8610254,40.7399322]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0319/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p319","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0319/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0319/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"253.7,5693.1 -0.0,5691.4 -0.0,2503.8 189.4,2472.1 183.0,2118.8 264.0,1751.0 273.6,234.0 377.5,234.3 372.2,0.0 6472.0,0.0 6395.6,18.1 6362.5,7796.0 200.0,7796.0 253.7,5693.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0319/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85545109631681,40.74498605363847]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84790230586319,40.74501598114373]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84785505881126,40.738077892975724]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85540384926489,40.738047965470464]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0320/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p320","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0320/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0320/info.json","type":"ImageService2","height":7796,"width":6612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"235.6,7653.0 129.1,-0.0 6612.0,-0.0 6612.0,879.1 6308.1,884.7 6463.3,7566.7 4355.5,7595.9 4361.5,7796.0 4145.8,7796.0 4145.8,7598.8 235.6,7653.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0320/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85513102980947,40.739978354284005]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8551916227319,40.7370207422032]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85976176365499,40.737075256634995]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85970117073256,40.7400328687158]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0321/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p321","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0321/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0321/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6202.3,5225.2 6472.0,5223.6 6472.0,7154.9 2530.5,7188.4 2533.5,7796.0 -0.0,7796.0 -0.0,615.5 2496.4,593.4 2493.3,0.0 5929.8,0.0 5950.7,5226.8 6202.3,5225.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0321/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86680411935036,40.738338549434836]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86302294117725,40.73832459178245]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86304497453177,40.7348490257697]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86682615270489,40.73486298342208]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0322/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p322","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"2"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0322/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0322/info.json","type":"ImageService2","height":7796,"width":6612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6025.8,604.0 6022.7,817.2 6219.1,814.2 6213.2,7223.7 502.7,7173.7 509.7,5429.1 -0.0,5430.1 -0.0,648.5 6025.8,604.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0322/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3464.0,856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8612701,40.7380653]}},{"type":"Feature","properties":{"resourceCoords":[3464.0,2876.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8612711,40.7371507]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0323/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p323","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0323/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0323/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6472.0,7661.9 157.4,7634.9 200.1,0.0 6472.0,0.0 6472.0,7661.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0323/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85975093079897,40.737154383505796]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85570747930123,40.737162848971806]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85569411596,40.73344617305246]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85973756745774,40.73343770758645]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0325/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p325","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0325/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0325/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 249.1,0.0 244.4,382.9 4968.4,491.7 4975.2,0.0 6472.0,0.0 6472.0,2876.0 4977.9,2824.8 4961.0,3319.1 2653.2,3247.2 2640.2,4114.9 1341.0,4097.9 1308.3,5891.9 1377.7,6054.6 1374.1,6426.1 1146.1,6422.1 1122.4,7796.0 -0.0,7796.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0325/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8770850721295,40.737159089974675]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86951579111167,40.73724124775113]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86938610240915,40.73028351402201]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87695538342699,40.73020135624556]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0326/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p326","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0326/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0326/info.json","type":"ImageService2","height":7796,"width":6612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 2480.4,-0.0 2485.6,249.8 6068.2,175.7 6285.6,7490.6 6612.0,7484.8 6612.0,7762.2 -0.0,7796.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0326/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86658824435357,40.734630525222904]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86666684926467,40.73163526433294]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87129479691932,40.73170598948171]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8712161920082,40.73470125037168]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0327/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p327","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0327/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0327/info.json","type":"ImageService2","height":7796,"width":6420},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2484.5,7012.7 147.3,6996.6 157.8,3491.8 402.2,3492.5 459.7,1067.2 -0.0,1056.3 69.6,564.0 2507.8,584.7 2509.9,0.0 6420.0,0.0 6420.0,7681.4 2481.7,7661.8 2484.5,7012.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0327/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86686968257364,40.735124126501454]}},{"type":"Feature","properties":{"resourceCoords":[6420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86297235077888,40.735135038687645]}},{"type":"Feature","properties":{"resourceCoords":[6420.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86295498619134,40.73152353318514]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8668523179861,40.73151262099895]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0328/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p328","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0328/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0328/info.json","type":"ImageService2","height":7796,"width":6612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6193.2,7730.4 786.2,7774.7 685.7,150.8 569.9,152.3 569.2,0.0 6148.6,0.0 6193.2,7730.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0328/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86339083460932,40.73520845302706]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85934712604251,40.73517911390598]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85939245826552,40.73154081896875]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86343616683233,40.73157015808984]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0329__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p329 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6420.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0329__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0329/info.json","type":"ImageService2","height":7796,"width":6420},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5451.8,7451.7 6183.5,7452.1 6242.5,238.4 5316.7,228.5 5316.5,271.3 5642.9,273.7 5635.9,551.0 -0.0,437.9 -0.0,4990.1 1608.8,4999.7 1598.7,7558.9 5132.7,7591.3 5451.8,7451.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0329__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":[-111.87096478025158,40.73426092110223]}},{"type":"Feature","properties":{"resourceCoords":[6420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87094512236214,40.73135167035848]}},{"type":"Feature","properties":{"resourceCoords":[6420.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87557460465317,40.73133345409833]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8755942625426,40.73424270484209]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0330/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p330","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0330/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0330/info.json","type":"ImageService2","height":7796,"width":6612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7796.0 -0.0,59.2 6612.0,95.1 6612.0,384.8 6448.4,385.9 6450.1,1319.2 6612.0,1319.1 6612.0,7796.0 -0.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0330/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87105236882456,40.731431474341775]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87106412452054,40.72846354452853]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87564962958554,40.72847412226557]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87563787388956,40.73144205207881]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0331/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p331","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0331/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0331/info.json","type":"ImageService2","height":7796,"width":6420},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4885.4,7796.0 -0.0,7796.0 -0.0,477.1 5786.1,369.6 5890.6,7025.0 4882.2,7030.0 4885.4,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0331/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87108264858406,40.73206701709654]}},{"type":"Feature","properties":{"resourceCoords":[6420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86727477295189,40.732051109488964]}},{"type":"Feature","properties":{"resourceCoords":[6420.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8673000857084,40.728522352202866]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87110796134057,40.72853825981044]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0332/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p332","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0332/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0332/info.json","type":"ImageService2","height":7796,"width":6612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,6976.5 -0.0,221.4 3945.5,274.5 3938.1,948.7 6053.4,973.1 6038.5,2195.5 6440.8,2202.3 6371.0,7502.1 3865.8,7466.2 3870.8,7017.9 -0.0,6976.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0332/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86765329779249,40.73198414270011]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86378910425046,40.7320143063287]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86374250057388,40.72853734190902]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8676066941159,40.728507178280424]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0333/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p333","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0333/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0333/info.json","type":"ImageService2","height":7796,"width":6420},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"37.2,7796.0 32.6,265.9 6420.0,264.4 6420.0,4342.8 6003.0,4350.7 6060.0,7404.0 1245.0,7399.1 1243.1,7796.0 37.2,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0333/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8594906464239,40.731587789237]}},{"type":"Feature","properties":{"resourceCoords":[6420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85949799457379,40.72868496563664]}},{"type":"Feature","properties":{"resourceCoords":[6420.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86411706085957,40.72869177518114]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86410971270968,40.7315945987815]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0334__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p334 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6612.0"},{"label":"split_canvas_h","value":"3817.2"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0334__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0334/info.json","type":"ImageService2","height":7796,"width":6612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6612.0,0.0 4257.8,0.0 4258.1,126.4 914.3,121.9 905.1,3741.1 3432.2,3806.8 3831.1,3805.3 3829.2,3557.3 6612.0,3536.7 6612.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0334__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86071819122192,40.73362393495032]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85291717365165,40.73362289849315]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,3817.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85291796171757,40.73020553547669]}},{"type":"Feature","properties":{"resourceCoords":[0.0,3817.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86071897928784,40.73020657193386]}},{"type":"Feature","properties":{"resourceCoords":[1484.0,3741.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8589681,40.7302744]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0335/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p335","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0335/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0335/info.json","type":"ImageService2","height":7796,"width":6420},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6187.8,7698.4 -0.0,7796.0 -0.0,818.1 935.5,817.5 936.4,982.6 1226.8,982.9 1247.0,815.1 6184.7,832.6 6187.8,7698.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0335/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3740.0,2412.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8696468,40.7278259]}},{"type":"Feature","properties":{"resourceCoords":[3740.0,5184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.86965,40.7265931]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0336/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p336","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0336/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0336/info.json","type":"ImageService2","height":7796,"width":6612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5687.0,7796.0 -0.0,7796.0 -0.0,7552.9 836.3,7554.7 844.1,0.0 5694.6,0.0 5687.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0336/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86870752364607,40.72887303634004]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8648081474084,40.72887165883398]}},{"type":"Feature","properties":{"resourceCoords":[6612.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86481027560811,40.72536289410934]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86870965184578,40.7253642716154]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0337/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p337","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0337/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0337/info.json","type":"ImageService2","height":7796,"width":6420},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"890.7,364.2 3360.0,416.0 3368.2,0.0 6420.0,0.0 6420.0,7796.0 753.8,7728.8 890.7,364.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0337/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3276.0,3260.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8639065,40.7273893]}},{"type":"Feature","properties":{"resourceCoords":[3360.0,416.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8638851,40.7286673]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0339/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p339","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0339/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0339/info.json","type":"ImageService2","height":7796,"width":6420},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"93.3,399.8 4736.9,484.3 4748.5,500.5 5892.4,525.3 5922.1,3057.5 6420.0,3053.8 6420.0,7137.8 5829.8,7148.2 5841.2,7796.0 -0.0,7796.0 93.3,399.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0339/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85970561662256,40.73045644060405]}},{"type":"Feature","properties":{"resourceCoords":[6420.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85588336794885,40.73044357595869]}},{"type":"Feature","properties":{"resourceCoords":[6420.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85590383804178,40.726901396603274]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8597260867155,40.72691426124864]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0340/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p340","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0340/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0340/info.json","type":"ImageService2","height":7796,"width":6552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1404.8,7796.0 1405.8,7175.1 450.1,7180.9 497.9,3068.1 -0.0,3066.1 -0.0,-0.0 6552.0,0.0 6552.0,3072.7 6368.0,3072.0 6370.7,7796.0 1404.8,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0340/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[6368.0,3072.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8523962,40.7290735]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,3072.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8553471,40.7290573]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0342/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p342","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0342/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0342/info.json","type":"ImageService2","height":7796,"width":6552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1541.4,0.0 1536.8,614.7 6464.2,644.4 6552.0,5042.1 6012.0,5676.3 5991.1,7796.0 -0.0,7796.0 -0.0,-0.0 1541.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0342/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85625352391855,40.727196911559176]}},{"type":"Feature","properties":{"resourceCoords":[6552.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85234122254627,40.72723639171698]}},{"type":"Feature","properties":{"resourceCoords":[6552.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85227966968804,40.723683689223215]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85619197106033,40.72364420906541]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0343__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p343 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6440.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0343__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0343/info.json","type":"ImageService2","height":7796,"width":6440},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"254.2,4084.2 289.8,5286.3 -0.0,5617.8 -0.0,7796.0 2701.6,7796.0 2716.0,5281.2 6440.0,5294.0 6440.0,0.0 318.4,0.0 319.6,324.0 220.0,324.0 237.0,4084.3 254.2,4084.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0343__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[220.0,1288.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8523927,40.7282702]}},{"type":"Feature","properties":{"resourceCoords":[220.0,324.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8523962,40.7290735]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0354__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p354 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6504.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0354__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0354/info.json","type":"ImageService2","height":7796,"width":6504},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3021.0,6394.3 3007.4,5097.4 4326.9,5093.8 4324.3,3223.1 5908.9,3206.5 6504.0,3722.3 6504.0,1160.0 6504.0,488.0 6504.0,0.0 4261.6,0.0 4324.0,248.8 1918.3,258.7 1918.7,336.4 1823.4,334.5 1822.9,259.1 -0.0,266.5 0.0,2975.6 -0.0,3918.7 277.4,3917.4 195.2,7796.0 2348.0,7796.0 3084.0,7796.0 3252.7,7796.0 3145.0,6798.8 3177.3,6608.3 3270.5,6496.6 3273.8,6254.2 3021.0,6394.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0354__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":[-111.85895544424058,40.754382479222066]}},{"type":"Feature","properties":{"resourceCoords":[6504.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8513229198694,40.75436805492435]}},{"type":"Feature","properties":{"resourceCoords":[6504.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85134558277969,40.747388466823416]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85897810715086,40.74740289112113]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0355/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salt Lake City, Utah | 1950 | sanborn08891_013 p355","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:46:06Z","modified":"2026-09-21T07:46:06Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0355/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0355/info.json","type":"ImageService2","height":7796,"width":6484},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"301.1,6389.5 -0.0,6387.0 -0.0,4564.6 217.2,4566.9 221.6,4483.2 133.8,3436.2 295.2,3185.3 844.5,3003.1 909.6,2868.7 835.3,2759.3 629.5,2769.0 -0.0,3161.2 -0.0,1862.5 1321.1,1872.9 1338.2,0.0 2924.9,0.0 3515.3,522.7 3520.8,0.0 6484.0,0.0 6484.0,7297.3 318.5,7260.6 301.1,6389.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd434m:g4344m:g4344sm:g08891195003:08891_03_1950-0355/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85545861480485,40.7514776748952]}},{"type":"Feature","properties":{"resourceCoords":[6484.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84785930060698,40.7515242767234]}},{"type":"Feature","properties":{"resourceCoords":[6484.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84778585817396,40.744553391241276]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85538517237183,40.74450678941307]}}]}}]}