{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08891_014.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Salt Lake City, Utah | 1950 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"37"},{"label":"placed","value":"26"},{"label":"unplaced","value":"11"},{"label":"fit sources","value":"georef-snap 15, georef 8, snap:1 1, snap:0 1, streets-candidate 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p0 (tier 4, 40.72654,-111.85520 +/-3541m); p346 (tier 1, 40.72313,-111.87307 +/-505m); p351__1 (tier 2, 40.71822,-111.86680 +/-575m); p351__2 (tier 2, 40.71822,-111.86680 +/-575m); p352__1 (tier 1, 40.70963,-111.87319 +/-368m); p352__2 (tier 1, 40.71087,-111.87347 +/-397m); p357 (tier 1, 40.71066,-111.85413 +/-502m); p371 (tier 1, 40.72872,-111.86531 +/-491m); p504__1 (tier 4, 40.72654,-111.85520 +/-3541m); p504__2 (tier 4, 40.72654,-111.85520 +/-3541m); p504__3 (tier 4, 40.72654,-111.85520 +/-3541m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0344/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_014 p344","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0344/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0344","type":"ImageService3","width":1648,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1750.5 -0.0,160.7 85.5,161.8 87.5,47.4 1327.2,67.7 1328.3,0.0 1648.0,0.0 1648.0,1949.0 1300.5,1949.0 1302.1,1832.8 851.2,1826.8 805.3,1843.8 762.0,1906.3 721.6,1926.3 59.8,1949.0 61.5,1821.8 61.8,1798.1 62.1,1751.3 -0.0,1750.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0344/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84838473416212,40.738917731341566]}},{"type":"Feature","properties":{"resourceCoords":[1648.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84078832045448,40.738991396479356]}},{"type":"Feature","properties":{"resourceCoords":[1648.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84067415179663,40.73213599360487]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84827056550428,40.73206232846708]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0345/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_014 p345","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0345/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0345","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1868.8 0.0,0.0 1641.0,0.0 1628.8,1866.7 -0.0,1868.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0345/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87207917068925,40.725568495114764]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86819258469198,40.72556122518383]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86820396015821,40.722057452861925]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87209054615548,40.72206472279286]}},{"type":"Feature","properties":{"resourceCoords":[1024.0,1867.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8696648,40.7222076]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0347/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_014 p347","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0347/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0347","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1659.2 0.0,0.0 37.8,0.0 37.0,102.6 1628.0,112.0 1588.9,1923.2 1641.0,1949.0 892.4,1949.0 871.6,1606.3 -0.0,1659.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0347/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8721810434758,40.72239852953625]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86820202105812,40.72241277511694]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86817985350496,40.718805782110216]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87215887592264,40.71879153652952]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0348/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_014 p348","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0348/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0348","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1651.0,0.0 1651.0,1949.0 -0.0,1949.0 24.4,0.0 1651.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0348/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[626.0,83.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8668054,40.7222033]}},{"type":"Feature","properties":{"resourceCoords":[626.0,1368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8668165,40.7198934]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0349/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_014 p349","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0349/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0349","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,141.5 1641.0,136.8 1641.0,936.2 1229.0,936.1 1223.6,1949.0 14.9,1949.0 -0.0,141.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0349/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87690153984057,40.7207458418579]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87301494342348,40.72074832927618]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87301105128986,40.71724454756075]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87689764770695,40.717242060142475]}},{"type":"Feature","properties":{"resourceCoords":[622.0,889.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8754266,40.7191486]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0350/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_014 p350","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0350/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0350","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,1140.5 73.4,89.5 461.1,114.6 468.5,0.0 1651.0,0.0 1651.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0350/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87418767744651,40.71922679552579]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87004925191995,40.71943326130695]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86972993148342,40.71570431572729]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87386835700998,40.715497849946125]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0353/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_014 p353","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0353/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0353","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1546.9,1838.1 198.3,1815.8 199.1,1591.2 530.1,1592.1 528.5,1069.2 200.0,1068.2 198.4,926.7 307.4,857.6 419.0,745.0 500.4,594.6 522.0,440.4 133.3,439.1 218.0,325.8 326.3,238.4 345.5,134.8 372.6,121.6 1553.8,140.0 1546.9,1838.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0353/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84314931713865,40.75123226078453]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.83615123941615,40.75125614160268]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8361140631259,40.74491498572673]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8431121408484,40.74489110490858]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0356/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_014 p356","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0356/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0356","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 0.0,-0.0 1637.0,0.0 1637.0,74.7 1472.9,73.9 1455.1,168.2 1356.2,247.6 1278.8,350.6 1632.8,352.8 1612.7,493.2 1538.2,630.0 1334.0,810.1 1337.7,923.8 1637.0,925.7 1637.0,1402.1 1335.3,1400.3 1331.5,1839.3 110.0,1829.5 108.6,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0356/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84857028058362,40.75102284503876]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84090777946216,40.751067090641214]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84083873261847,40.74410686766602]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84850123373992,40.744062622063566]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0358/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_014 p358","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0358/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0358","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1637.0,1949.0 -0.0,1949.0 0.0,-0.0 1637.0,-0.0 1637.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0358/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.872422158828,40.72348893069086]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87240767845927,40.720504195667175]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87706366938401,40.72049103737283]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87707814975275,40.723475772396526]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0359/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_014 p359","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0359/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0359","type":"ImageService3","width":1609,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 0.0,-0.0 375.3,0.0 374.8,150.8 1583.5,147.0 1609.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0359/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87774910773356,40.71751479558529]}},{"type":"Feature","properties":{"resourceCoords":[1609.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87393831026685,40.71750800841421]}},{"type":"Feature","properties":{"resourceCoords":[1609.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.87394914155858,40.714004235098756]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8777599390253,40.71401102226984]}},{"type":"Feature","properties":{"resourceCoords":[911.0,329.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8755933,40.7169195]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0360/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_014 p360","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0360/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0360","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"288.7,1947.2 288.6,979.8 -0.0,979.9 -0.0,0.0 1637.0,0.0 1637.0,121.7 1271.3,132.6 1296.8,461.5 1458.5,906.7 1173.1,901.8 1174.0,992.2 1278.1,1091.3 1276.0,1458.5 1637.0,1469.6 1637.0,1775.5 1197.8,1775.8 1197.9,1949.0 288.7,1947.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0360/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8657348,40.7258983]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8579121,40.7258762]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85794689999999,40.71881750000001]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8657696,40.7188396]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0361/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_014 p361","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0361/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0361","type":"ImageService3","width":1609,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"126.1,1900.8 126.6,0.0 1609.0,0.0 1609.0,180.3 1479.7,180.3 1483.8,1894.0 1609.0,1893.4 1609.0,1949.0 1386.5,1949.0 1386.8,1894.5 126.1,1900.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0361/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[661.0,1033.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8502053,40.7154904]}},{"type":"Feature","properties":{"resourceCoords":[939.0,1033.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8490224,40.7154878]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0362/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_014 p362","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0362/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0362","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"368.9,1819.0 55.5,1820.5 54.8,1886.8 -0.0,1886.2 -0.0,284.1 65.2,284.1 67.8,50.8 1290.6,75.1 1287.4,435.4 1637.0,437.8 1637.0,1949.0 369.6,1949.0 368.9,1819.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0362/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84258979022434,40.74550801380756]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.83489115188146,40.74555358687774]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.83482003890093,40.73856000532525]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8425186772438,40.738514432255066]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0363/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_014 p363","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0363/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0363","type":"ImageService3","width":1603,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"45.0,50.3 -0.0,49.8 -0.0,-0.0 1603.0,0.0 1603.0,1949.0 43.5,1949.0 45.0,50.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0363/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8367326193092,40.75097988405528]}},{"type":"Feature","properties":{"resourceCoords":[1603.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.82918794642679,40.75098511072086]}},{"type":"Feature","properties":{"resourceCoords":[1603.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.82917961703942,40.74398655054495]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.83672428992183,40.743981323879375]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0364/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_014 p364","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0364/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0364","type":"ImageService3","width":1640,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 59.2,0.0 61.5,305.2 173.2,304.4 173.6,181.6 1362.2,182.7 1375.0,1837.5 176.3,1833.2 175.8,1949.0 -0.0,1949.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0364/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84878121957881,40.745123015146774]}},{"type":"Feature","properties":{"resourceCoords":[1640.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84131456574431,40.74512291093319]}},{"type":"Feature","properties":{"resourceCoords":[1640.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84131472806166,40.73835240083396]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84878138189616,40.738352505047544]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0365/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_014 p365","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"4"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0365/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0365","type":"ImageService3","width":1611,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"253.7,0.0 253.8,192.2 577.2,177.1 603.0,165.8 892.4,162.4 931.1,142.5 972.2,81.3 1016.3,64.2 1451.6,64.8 1451.4,177.7 1611.0,175.8 1611.0,242.4 1451.2,241.6 1447.2,1949.0 -0.0,1949.0 -0.0,-0.0 253.7,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0365/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1075.0,1599.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8440685,40.7269762]}},{"type":"Feature","properties":{"resourceCoords":[1075.0,1013.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8440705,40.7290968]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0366/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_014 p366","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0366/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0366","type":"ImageService3","width":1640,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"609.6,1778.0 463.1,1779.6 466.5,1470.0 98.7,1454.8 105.0,1083.3 -0.0,981.9 -0.0,890.3 290.8,898.4 130.9,446.2 108.5,113.0 481.3,106.0 482.4,0.0 1640.0,0.0 1640.0,1949.0 651.0,1949.0 609.6,1778.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0366/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86017467627732,40.72580272188113]}},{"type":"Feature","properties":{"resourceCoords":[1640.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85248467704027,40.72584431516563]}},{"type":"Feature","properties":{"resourceCoords":[1640.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85241991245681,40.71886925563001]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86010991169387,40.71882766234551]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0367/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_014 p367","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0367/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0367","type":"ImageService3","width":1611,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 593.0,0.0 635.1,166.9 1611.0,156.9 1611.0,1875.6 1174.7,1877.7 1175.8,1949.0 -0.0,1949.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0367/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.86004273693155,40.71945080780923]}},{"type":"Feature","properties":{"resourceCoords":[1611.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85246388251495,40.71943235302391]}},{"type":"Feature","properties":{"resourceCoords":[1611.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8524931327551,40.71243367968258]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8600719871717,40.7124521344679]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0368/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_014 p368","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0368/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0368","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"157.7,1870.0 146.0,193.1 273.5,192.4 272.7,16.0 -0.0,17.2 0.0,-0.0 1635.0,0.0 1635.0,1949.0 93.8,1949.0 93.3,1924.0 281.2,1923.2 281.0,1868.8 157.7,1870.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0368/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84733535062357,40.718871708655115]}},{"type":"Feature","properties":{"resourceCoords":[1635.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8402775513807,40.718831776932404]}},{"type":"Feature","properties":{"resourceCoords":[1635.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84033991252777,40.71240990830752]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84739771177064,40.71244984003023]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0369/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_014 p369","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0369/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0369","type":"ImageService3","width":1611,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,164.5 1583.2,181.7 1583.2,230.8 1611.0,231.2 1611.0,1949.0 -0.0,1949.0 -0.0,164.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0369/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8545544828725,40.71328312081787]}},{"type":"Feature","properties":{"resourceCoords":[1611.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8470079560134,40.71335673368651]}},{"type":"Feature","properties":{"resourceCoords":[1611.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84689129272824,40.706387271597826]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.85443781958735,40.70631365872919]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0370/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_014 p370","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0370/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0370","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"170.8,1887.5 159.0,0.0 1635.0,0.0 1635.0,1949.0 1488.8,1949.0 1488.0,1691.1 1459.8,1691.2 1460.0,1875.9 170.8,1887.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0370/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84298363997272,40.731891564782025]}},{"type":"Feature","properties":{"resourceCoords":[1635.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.83571402943494,40.731867408643005]}},{"type":"Feature","properties":{"resourceCoords":[1635.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.83575176059976,40.72525398084714]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.84302137113754,40.72527813698616]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0372/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_014 p372","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0372/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0372","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1608.2,174.2 1608.6,0.0 1635.0,0.0 1635.0,1949.0 -0.0,1949.0 -0.0,118.9 394.8,118.2 401.0,181.1 1608.2,174.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0372/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1217.0,692.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8383887,40.7236431]}},{"type":"Feature","properties":{"resourceCoords":[732.0,692.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8406915,40.7236449]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0373/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_014 p373","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0373/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0373","type":"ImageService3","width":1611,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1582.7,1946.0 -0.0,1949.0 -0.0,-0.0 1611.0,0.0 1611.0,1776.7 1522.0,1808.8 1543.2,1825.2 1582.7,1946.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0373/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.83192630128704,40.732182485798674]}},{"type":"Feature","properties":{"resourceCoords":[1611.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.82440657783398,40.73219230267895]}},{"type":"Feature","properties":{"resourceCoords":[1611.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.82439101540915,40.725249565995156]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.8319107388622,40.72523974911488]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0374/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_014 p374","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0374/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0374","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1635.0,1949.0 233.6,1949.0 246.8,1923.4 225.3,1916.5 76.1,1949.0 56.9,1887.8 -0.0,1887.7 0.0,-0.0 1635.0,-0.0 1635.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0374/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.81554357019263,40.72609587187364]}},{"type":"Feature","properties":{"resourceCoords":[1635.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.81551053455863,40.720245903619926]}},{"type":"Feature","properties":{"resourceCoords":[1635.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.82464743019912,40.720215848002425]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.82468046583313,40.72606581625614]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0502/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_014 p502","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0502/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0502","type":"ImageService3","width":1655,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"214.7,1837.0 214.8,1949.0 -0.0,1949.0 -0.0,0.0 1655.0,0.0 1655.0,1949.0 241.9,1949.0 241.7,1836.5 214.7,1837.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0502/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1438.0,609.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8939558,40.7317705]}},{"type":"Feature","properties":{"resourceCoords":[1438.0,1683.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-111.8939754,40.7279117]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0503/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_014 p503","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:40:04Z","modified":"2026-09-22T14:40:04Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0503/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0503","type":"ImageService3","width":1628,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,107.5 198.0,111.8 198.8,75.6 200.3,0.0 227.5,0.0 225.7,71.0 225.3,112.3 1628.0,142.4 1628.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd434m:g4344m:g4344sm:g08891195004:08891_04_1950-0503/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.90072271312236,40.72736239026052]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.89304776938907,40.727465705675534]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.89288570833443,40.72045314646627]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-111.90056065206772,40.72034983105125]}}]}}]}