{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03985_070.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Detroit, Michigan | 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":"61"},{"label":"placed","value":"47"},{"label":"unplaced","value":"14"},{"label":"fit sources","value":"georef 30, georef-snap 17"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 18 panels"},{"label":"unplaced pages","value":"p0 (tier 4, 42.42118,-83.20832 +/-3729m); p2529__2 (tier 2, 42.43105,-83.20913 +/-127m); p2529__3 (tier 2, 42.43105,-83.20913 +/-127m); p2530__2 (tier 1, 42.43353,-83.21536 +/-112m); p2530__3 (tier 1, 42.43280,-83.19992 +/-116m); p2530__4 (tier 2, 42.43120,-83.20447 +/-100m); p2530__5 (tier 1, 42.43570,-83.19996 +/-100m); p2536__2 (tier 1, 42.43263,-83.19940 +/-102m); p2536__3 (tier 1, 42.43460,-83.18943 +/-142m); p2536__4 (tier 1, 42.43307,-83.19269 +/-145m); p2538__2 (tier 1, 42.43373,-83.22418 +/-107m); p2538__3 (tier 1, 42.42669,-83.21680 +/-125m); p2539__2 (tier 1, 42.43040,-83.22489 +/-118m); p2539__3 (tier 1, 42.42602,-83.23202 +/-100m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2501/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2501","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2501/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2501/info.json","type":"ImageService2","height":7796,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7796.0 0.0,-0.0 3505.4,0.0 5062.4,940.7 5631.4,0.0 5784.9,0.0 5149.0,993.3 5920.6,1454.7 5966.6,2700.8 5902.6,2759.8 5940.3,3887.2 5875.5,4057.1 5904.7,4433.5 5817.4,4957.0 5839.7,5767.4 5772.1,5915.0 5809.4,7227.9 5053.4,7214.1 5043.1,7796.0 -0.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2501/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.23876475076612,42.40708392850034]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.23086428327996,42.40734469959684]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.23044446195532,42.40031134318267]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.23834492944148,42.40005057208617]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2502/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2502","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"18"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2502/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2502/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"761.8,1331.1 3302.8,0.0 4507.2,0.0 5896.2,809.5 6178.5,234.7 6172.4,0.0 6472.0,0.0 6472.0,2395.8 5885.8,2081.2 5748.1,7094.4 4619.8,7796.0 -0.0,7796.0 -0.0,7115.9 761.8,1331.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2502/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3796.0,5108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2276784,42.4026781]}},{"type":"Feature","properties":{"resourceCoords":[1740.0,3088.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2302528,42.404449]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2503/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2503","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2503/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2503/info.json","type":"ImageService2","height":7796,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7796.0 -0.0,6907.0 1144.8,6916.7 1189.0,4105.1 298.4,3522.2 749.7,2676.4 864.5,1618.2 1657.3,0.0 5987.2,0.0 5979.6,2880.2 6512.0,2878.9 6512.0,2943.3 5979.3,2945.3 5971.6,4884.8 5689.2,4909.5 5500.2,5024.7 5072.5,4451.7 4677.4,4921.0 5839.2,5601.3 5964.6,6268.6 6043.7,6318.4 6038.5,6922.4 5039.1,6930.7 5038.2,7581.6 4980.8,7796.0 -0.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2503/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22693938229916,42.407122428777676]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21905552191542,42.40734748266837]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21869320286321,42.40032890426717]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22657706324695,42.400103850376475]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2504/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2504","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"32"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2504/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2504/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1273.9,6869.3 1275.9,6268.9 1197.5,6219.8 1070.3,5557.3 -0.0,4936.5 -0.0,4790.3 307.5,4418.9 732.6,4986.0 918.6,4870.5 1197.2,4844.3 1188.0,890.0 1843.8,894.8 1831.5,0.0 4069.3,0.0 4071.2,904.3 4144.8,907.4 4127.0,7796.0 234.4,7743.7 290.0,7530.3 287.4,6883.3 1273.9,6869.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2504/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3828.0,4900.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2162531,42.402959]}},{"type":"Feature","properties":{"resourceCoords":[1188.0,888.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2196535,42.4065129]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2505/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2505","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"21"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2505/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2505/info.json","type":"ImageService2","height":7796,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5238.0,6900.7 4184.6,6898.0 4026.0,7242.6 4018.8,7755.3 -0.0,7796.0 -0.0,883.5 5220.8,918.2 5238.0,6900.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2505/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4184.0,6896.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2106632,42.4012465]}},{"type":"Feature","properties":{"resourceCoords":[3548.0,2904.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2115935,42.4048505]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2506/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2506","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"23"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2506/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2506/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1098.5,984.6 6472.0,935.1 6472.0,7796.0 -0.0,7796.0 -0.0,7286.3 152.8,6941.7 1199.6,6929.6 1098.5,984.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2506/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2452.0,6920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2078219,42.401302]}},{"type":"Feature","properties":{"resourceCoords":[1952.0,4948.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2084792,42.4030925]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2507/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2507","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"27"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2507/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2507/info.json","type":"ImageService2","height":7796,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6512.0,7796.0 6371.3,7796.0 6395.0,6027.5 4306.1,5999.6 4300.1,6960.2 2057.5,6943.5 2103.5,0.0 6512.0,0.0 6512.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2507/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3192.0,3916.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2018529,42.409592]}},{"type":"Feature","properties":{"resourceCoords":[5524.0,2316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.1990831,42.4111189]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2508/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2508","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"21"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2508/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2508/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4390.4,0.0 6472.0,0.0 6472.0,7796.0 2186.8,7796.0 2258.5,972.6 4397.2,957.1 4390.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2508/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3268.0,4960.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2016046,42.4032355]}},{"type":"Feature","properties":{"resourceCoords":[3268.0,964.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2017352,42.4068535]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2509/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2509","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2509/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2509/info.json","type":"ImageService2","height":7796,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"730.8,802.2 736.1,1542.2 1687.6,1531.8 1681.7,884.3 2681.0,894.5 2682.6,1520.9 2844.4,1519.1 2843.5,897.0 5329.0,921.9 5338.3,2866.7 5988.9,2879.9 6005.6,0.0 6512.0,0.0 6512.0,3608.3 5990.8,3606.2 6512.0,3925.5 6512.0,4113.8 5998.9,3795.2 5981.8,4723.1 5874.2,5216.3 5636.2,5699.4 5483.0,5699.9 4918.1,6640.7 3358.0,5706.7 -0.0,5717.4 0.0,0.0 52.3,0.0 61.6,795.4 730.8,802.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2509/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.23888390938527,42.4122577006935]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.23096716713599,42.41250025798135]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.23057663634098,42.40545299586335]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.23849337859026,42.4052104385755]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2510/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2510","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2510/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2510/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,4968.5 862.2,3487.8 968.5,2994.4 983.1,2066.6 1496.9,2383.8 1496.4,2195.4 990.1,1884.6 325.6,1879.7 320.0,1140.0 970.5,1151.4 974.1,0.0 6140.2,0.0 6232.0,4202.1 6175.5,4545.6 5949.7,4979.6 4541.9,4142.1 4198.4,4137.9 5874.5,5110.7 5425.2,5948.1 3491.2,4803.7 3513.3,5851.8 5329.2,6916.0 5194.2,7290.0 4888.8,7796.0 4779.2,7796.0 2983.3,6733.3 2765.9,7195.5 1730.1,7184.4 1737.2,6921.1 1684.1,6848.2 1728.5,5991.5 -0.0,4968.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2510/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.2326929706247,42.41088477806717]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22482308827423,42.41111010640392]}},{"type":"Feature","properties":{"resourceCoords":[6472.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22445806256897,42.4040611106995]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.23232794491943,42.403835782362755]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2511/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2511","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2511/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2511/info.json","type":"ImageService2","height":7796,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1138.4,481.2 6161.1,531.3 6148.7,1440.5 6512.0,1436.7 6512.0,5576.5 6199.0,5575.8 6209.7,6473.6 5547.2,6467.3 5548.0,5562.9 1526.3,5576.9 1527.7,5405.4 1226.7,5402.9 1138.4,481.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2511/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22666265311913,42.41217653006622]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21875627946278,42.412381835936145]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21842572611682,42.40534379122677]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22633209977317,42.405138485356844]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2512/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2512","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"26"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2512/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2512/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2348.0,889.4 5621.1,933.1 5580.9,4874.5 3932.2,4851.9 3925.3,5928.3 2004.4,5912.0 2032.0,1800.8 2339.1,1799.5 2348.0,889.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2512/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2964.0,2868.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2174938,42.41015]}},{"type":"Feature","properties":{"resourceCoords":[4700.0,4856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2152557,42.4084086]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2513/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2513","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"20"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2513/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2513/info.json","type":"ImageService2","height":7796,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1625.4,4889.5 1670.5,932.9 5322.4,953.8 5301.5,6926.5 -0.0,6864.2 -0.0,4878.4 1625.4,4889.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2513/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2624.0,4900.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2129828,42.408447]}},{"type":"Feature","properties":{"resourceCoords":[4524.0,948.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2108225,42.412085]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2514/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2514","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"27"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2514/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2514/info.json","type":"ImageService2","height":7796,"width":6472},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1201.0,6868.8 1191.8,948.9 6455.4,955.2 6472.0,6890.4 1201.0,6868.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2514/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2864.0,6880.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2075552,42.406734]}},{"type":"Feature","properties":{"resourceCoords":[4604.0,2904.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2055491,42.410412]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2515/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2515","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"31"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2515/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2515/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"659.0,7062.1 -0.0,7048.1 -0.0,-0.0 6074.1,0.0 6432.0,0.0 6432.0,2139.4 6099.5,2137.2 5983.3,2714.1 5916.6,3233.0 5880.3,6324.1 5670.0,6321.8 5671.2,6501.6 5708.0,6816.6 5713.3,7242.0 2738.5,7179.1 2732.2,7796.0 2572.9,7796.0 2578.5,7174.8 1594.4,7153.8 1592.8,7796.0 655.7,7796.0 659.0,7062.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2515/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3732.0,5156.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2342875,42.4134434]}},{"type":"Feature","properties":{"resourceCoords":[3348.0,672.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.235052,42.41751]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2516/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2516","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"25"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2516/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2516/info.json","type":"ImageService2","height":7796,"width":6484},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"690.3,4201.5 642.6,7066.3 -0.0,7050.5 -0.0,5115.8 529.1,5123.4 479.3,4200.7 672.8,4201.5 705.5,1100.5 881.4,0.0 6363.2,0.0 6365.8,335.3 6484.0,567.7 6484.0,3207.7 5760.3,3200.4 5759.0,5956.0 1164.9,5924.3 1173.1,4203.6 690.3,4201.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2516/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2724.0,5156.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2290055,42.4116994]}},{"type":"Feature","properties":{"resourceCoords":[3788.0,3140.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2278098,42.413575]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2517/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2517","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2517/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2517/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1666.3 -0.0,1666.3 -0.0,-0.0 2086.8,0.0 3260.2,0.0 6281.9,1768.5 6282.0,2989.9 5505.5,6991.6 1107.2,6897.5 -0.0,1666.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2517/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.2270255011646,42.417971655741]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21919479771238,42.41826102645996]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21872305703327,42.411204294487874]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.2265537604855,42.410914923768914]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2518/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2518","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2518/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2518/info.json","type":"ImageService2","height":7796,"width":6484},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"950.6,6868.0 1012.0,2871.9 1705.6,2885.0 1700.3,1670.3 2390.2,1681.6 2389.4,1610.9 2330.9,631.7 2326.3,0.0 5589.3,0.0 5571.2,946.8 6484.0,968.5 6484.0,2966.9 5552.6,2948.5 5502.5,6945.3 2213.0,6887.6 2200.7,7796.0 1531.9,7796.0 1553.6,6894.9 950.6,6868.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2518/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22144519465252,42.41810382299706]}},{"type":"Feature","properties":{"resourceCoords":[6484.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21350590460607,42.41837166995789]}},{"type":"Feature","properties":{"resourceCoords":[6484.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21307275353759,42.41127447639802]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22101204358404,42.41100662943719]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2519/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2519","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2519/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2519/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1469.8,2916.1 2398.0,2917.8 2363.0,913.2 5094.0,908.1 5132.1,6920.2 1489.9,6926.2 1469.8,2916.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2519/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4328.0,4912.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2109002,42.4139083]}},{"type":"Feature","properties":{"resourceCoords":[1476.0,4912.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2144072,42.4138369]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2520/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2520","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2520/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2520/info.json","type":"ImageService2","height":7796,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1162.9,6887.6 1154.1,897.0 3724.8,912.9 3730.7,0.0 6470.2,0.0 6476.9,6909.8 1162.9,6887.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2520/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21154420878354,42.41834596321638]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.20356378718039,42.41853972052214]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.20325179715786,42.411436454261974]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21123221876101,42.411242696956215]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2521/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2521","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"16"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2521/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2521/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3726.8,7796.0 -0.0,7796.0 -0.0,-0.0 6432.0,0.0 6432.0,167.6 6026.6,165.4 6015.6,3037.5 5399.8,3030.1 5383.5,6076.5 3636.2,6105.2 3726.8,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2521/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2468.0,1036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.220211,42.422758]}},{"type":"Feature","properties":{"resourceCoords":[5152.0,1036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2169197,42.422829]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2522/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2522","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"31"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2522/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2522/info.json","type":"ImageService2","height":7796,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1499.0,5829.9 -0.0,5862.6 -0.0,2842.9 610.4,2846.9 606.1,0.0 6512.0,0.0 6512.0,6756.5 1501.1,6774.5 1499.0,5829.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2522/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2456.0,2836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2135058,42.4210902]}},{"type":"Feature","properties":{"resourceCoords":[5932.0,2836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.209205,42.421166]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2523/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2523","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2523/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2523/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,763.0 848.8,764.7 834.5,2767.9 1817.5,2792.3 1859.7,781.4 4801.8,858.7 4787.2,1857.8 5015.6,1865.6 5029.6,865.3 6070.7,893.6 6056.1,1900.8 6432.0,1913.5 6432.0,6143.1 4728.5,6106.7 4717.5,6913.4 1764.0,6831.2 1751.4,7796.0 1153.3,7796.0 774.9,7308.4 768.8,7796.0 -0.0,7796.0 -0.0,763.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2523/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.18157115756325,42.431723772686034]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.17384630739481,42.43200344199851]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.17339028187244,42.425043633031216]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.18111513204089,42.42476396371874]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2524/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2524","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2524/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2524/info.json","type":"ImageService2","height":7796,"width":6528},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,6894.5 -0.0,4812.7 730.3,4804.7 714.7,2804.4 -0.0,2813.4 -0.0,1756.3 572.8,1744.0 708.0,1911.9 702.9,1262.4 1084.6,1733.1 1671.7,1720.6 1663.8,773.3 4564.8,792.1 4558.7,0.0 6528.0,0.0 6528.0,7796.0 -0.0,7796.0 -0.0,7526.3 753.3,7570.2 741.5,6898.2 -0.0,6894.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2524/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.1811156993549,42.426364399574155]}},{"type":"Feature","properties":{"resourceCoords":[6528.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.17312411223588,42.42652662315734]}},{"type":"Feature","properties":{"resourceCoords":[6528.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.17286350480833,42.41943176678374]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.18085509192736,42.41926954320055]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2525/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2525","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"28"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2525/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2525/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7424.1 -0.0,-0.0 1710.3,0.0 1726.1,65.0 1722.4,0.0 3648.5,0.0 3062.0,269.3 3304.4,223.8 3665.2,0.0 6089.8,0.0 6085.4,341.6 6432.0,346.7 6432.0,7539.4 -0.0,7424.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2525/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2448.0,5368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.178598,42.438353]}},{"type":"Feature","properties":{"resourceCoords":[5156.0,2940.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.1754332,42.4406292]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2526/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2526","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"29"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2526/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2526/info.json","type":"ImageService2","height":7796,"width":6536},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,6879.2 -0.0,4925.9 637.8,4902.9 588.0,995.7 6265.2,960.3 6239.3,0.0 6536.0,0.0 6536.0,7796.0 5730.1,7796.0 5711.4,6812.7 4701.8,6819.5 4720.9,7796.0 4499.4,7796.0 4480.9,6820.6 1628.0,6842.5 1640.0,7796.0 1482.9,7796.0 1464.2,6851.9 -0.0,6879.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2526/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3252.0,4884.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.177314,42.432922]}},{"type":"Feature","properties":{"resourceCoords":[4956.0,968.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.175273,42.43653]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2527/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2527","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2527/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2527/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,6789.3 -0.0,-0.0 200.2,0.0 184.7,897.7 5902.4,873.6 5828.3,4860.4 5172.5,4863.1 5109.9,6855.5 4930.6,6856.6 4932.7,7796.0 3813.6,7796.0 3825.4,6858.4 2849.0,6863.3 2837.7,7796.0 -0.0,7796.0 -0.0,6890.4 76.7,6888.8 -0.0,6789.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2527/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.18785575495762,42.43698214499052]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.18010043396784,42.43725000555029]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.1796636284115,42.43026330732698]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.18741894940129,42.429995446767215]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2528/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2528","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2528/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2528/info.json","type":"ImageService2","height":7796,"width":6592},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2231.1,6211.8 2219.1,7125.7 1052.5,7109.8 1155.9,331.2 -0.0,313.2 -0.0,-0.0 6592.0,0.0 6592.0,7796.0 4962.8,7796.0 4973.5,6230.0 2231.1,6211.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2528/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.21000174635502,42.42402901239466]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.20193393347769,42.424264782470225]}},{"type":"Feature","properties":{"resourceCoords":[6592.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.20155886715897,42.41717152544166]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.2096266800363,42.4169357553661]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2529__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2529 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6432.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2529__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2529/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,4924.0 0.0,6362.8 1142.8,6484.8 1518.8,6533.2 1558.0,6494.0 1844.8,6575.6 1909.6,6584.0 1910.0,6584.0 1910.4,6584.4 1910.4,6594.0 1881.6,7796.0 2087.6,7796.0 2187.2,7796.0 5212.0,7796.0 5892.8,7796.0 5891.1,5620.1 6075.0,5623.5 6080.0,1548.0 6432.0,1554.8 6432.0,1468.0 6432.0,1301.2 6432.0,768.0 6432.0,0.0 -0.0,-0.0 0.0,4924.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2529__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[6080.0,1548.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2073742,42.4321228]}},{"type":"Feature","properties":{"resourceCoords":[508.0,1548.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.210727,42.432056]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2530__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2530 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6480.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2530__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2530/info.json","type":"ImageService2","height":7796,"width":6480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"429.1,5558.0 453.3,7719.1 4735.9,7796.0 4587.0,965.3 4028.0,389.6 4208.0,0.0 3282.4,0.0 908.5,0.0 924.4,1514.7 574.5,1511.6 611.9,5559.5 429.1,5558.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2530__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2276.0,1536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2063434,42.4321245]}},{"type":"Feature","properties":{"resourceCoords":[3964.0,1536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.205321,42.432137]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2531/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2531","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2531/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2531/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7796.0 -0.0,-0.0 6432.0,0.0 6391.0,5639.0 4632.9,5619.0 4666.0,7796.0 -0.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2531/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.20497206442505,42.432833321460976]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.20107027281858,42.432945338957374]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.20088761040645,42.429430120393505]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.20478940201292,42.429318102897106]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2532/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2532","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2532/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2532/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5301.9 1768.7,5348.8 1883.9,0.0 5123.0,26.6 5039.7,7695.1 -0.0,7796.0 -0.0,5301.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2532/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.20220188261978,42.4327542758188]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.19832738334192,42.432909292324275]}},{"type":"Feature","properties":{"resourceCoords":[6432.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.19807460435347,42.429418659691116]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.20194910363132,42.42926364318564]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2533/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2533","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2533/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2533/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6432.0,7796.0 -0.0,7796.0 -0.0,-0.0 6432.0,0.0 6432.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2533/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2668.0,1484.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.197485,42.432262]}},{"type":"Feature","properties":{"resourceCoords":[4796.0,1484.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.196215,42.432302]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2534/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2534","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2534/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2534/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1398.6,7538.2 1411.8,0.0 5166.5,0.0 5166.7,7719.0 -0.0,7796.0 -0.0,7535.7 1398.6,7538.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2534/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1816.0,1376.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.19499,42.432344]}},{"type":"Feature","properties":{"resourceCoords":[5952.0,1376.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.192459,42.432427]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2535/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2535","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2535/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2535/info.json","type":"ImageService2","height":7796,"width":6432},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 6432.0,0.0 6432.0,5392.0 4784.8,5392.3 4715.5,7796.0 -0.0,7796.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2535/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2788.0,1432.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.191239,42.432467]}},{"type":"Feature","properties":{"resourceCoords":[788.0,1432.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.192459,42.432427]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2536__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2536 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6508.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2536__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2536/info.json","type":"ImageService2","height":7796,"width":6508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7796.0 4876.0,7796.0 5748.0,7796.0 5841.2,7796.0 5944.7,7675.9 6508.0,7796.0 6508.0,6992.4 4100.8,6982.5 4109.1,5209.9 4258.3,5207.2 4110.1,5011.9 4129.3,924.2 4110.0,904.0 3802.8,583.6 4079.6,310.0 4132.9,161.8 4133.7,0.0 1821.5,0.0 1787.9,5203.0 167.5,5192.8 -0.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2536__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4008.0,1292.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.187656,42.432598]}},{"type":"Feature","properties":{"resourceCoords":[188.0,1292.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.190024,42.432509]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2537/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2537","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2537/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2537/info.json","type":"ImageService2","height":7796,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"684.0,7376.0 684.1,7796.0 -0.0,7796.0 -0.0,763.8 6452.0,828.7 6452.0,7417.8 684.0,7376.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2537/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[684.0,2092.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.211846,42.432024]}},{"type":"Feature","properties":{"resourceCoords":[684.0,7376.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.215099,42.431935]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2538__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2538 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6508.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2538__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2538/info.json","type":"ImageService2","height":7796,"width":6508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6508.0,2944.8 5997.2,2460.4 5389.6,1841.2 5280.4,1730.0 4968.8,1348.8 4691.6,1010.0 4630.8,935.6 4842.0,936.8 4872.4,937.2 4848.8,835.2 4863.6,545.4 708.0,526.0 701.7,945.1 26.9,946.8 -0.0,7796.0 5244.0,7796.0 6508.0,7796.0 6508.0,2944.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2538__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[708.0,5796.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.2183509,42.4318522]}},{"type":"Feature","properties":{"resourceCoords":[708.0,528.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.215099,42.431935]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2539__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2539 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2539__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2539/info.json","type":"ImageService2","height":7796,"width":6452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4784.3,7054.6 5167.9,7055.7 5234.4,6967.6 5727.2,6984.8 5457.6,6671.2 5684.4,6371.2 6452.0,5618.4 6452.0,5488.0 6452.0,5240.0 6452.0,611.9 4791.1,591.6 4791.1,-0.0 929.7,-0.0 929.5,211.3 -0.0,204.0 0.0,6527.2 0.0,6796.0 -0.0,7796.0 921.5,7796.0 922.6,7419.6 4782.0,7460.6 4784.3,7054.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2539__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[924.0,3528.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.232209,42.431515]}},{"type":"Feature","properties":{"resourceCoords":[924.0,5512.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.233431,42.43148]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2540/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2540","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2540/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2540/info.json","type":"ImageService2","height":7796,"width":6508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6508.0,-0.0 6508.0,7796.0 -0.0,7796.0 -0.0,750.2 540.0,748.7 540.0,374.0 4384.3,404.2 4385.4,-0.0 6508.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2540/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[540.0,2076.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.235659,42.431419]}},{"type":"Feature","properties":{"resourceCoords":[540.0,376.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.234606,42.431447]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2541/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2541","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2541/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2541/info.json","type":"ImageService2","height":7796,"width":6464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"598.4,5214.7 550.8,1334.6 337.1,1336.9 333.0,402.8 -0.0,406.7 0.0,0.0 6464.0,0.0 6464.0,1335.2 6152.2,1333.4 6192.8,5219.6 5852.9,5217.9 5878.9,7796.0 -0.0,7796.0 -0.0,5221.8 598.4,5214.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2541/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.23039307593574,42.432172213543254]}},{"type":"Feature","properties":{"resourceCoords":[6464.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.2264558050111,42.432250474097756]}},{"type":"Feature","properties":{"resourceCoords":[6464.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22632882177334,42.42872081477917]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.23026609269797,42.428642554224666]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2542/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2542","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2542/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2542/info.json","type":"ImageService2","height":7796,"width":6508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"338.7,1327.9 650.7,1332.8 664.1,0.0 6508.0,0.0 6508.0,1386.2 6240.9,1386.1 6169.3,5292.2 5858.8,5288.9 5860.6,7796.0 -0.0,7796.0 -0.0,5211.6 340.1,5216.7 338.7,1327.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2542/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22685988319654,42.43223798531595]}},{"type":"Feature","properties":{"resourceCoords":[6508.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22289954480169,42.432346421095616]}},{"type":"Feature","properties":{"resourceCoords":[6508.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.22272478950815,42.428820089608]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.226685127903,42.42871165382834]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2543/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2543","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2543/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2543/info.json","type":"ImageService2","height":7796,"width":6464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"380.0,1372.0 643.7,1372.1 644.7,0.0 6464.0,0.0 6464.0,640.7 5974.6,639.3 5956.3,7155.0 6464.0,7156.4 6464.0,7796.0 -0.0,7796.0 -0.0,5251.3 306.6,5254.6 380.0,1372.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2543/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4328.0,1372.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.220598,42.431782]}},{"type":"Feature","properties":{"resourceCoords":[380.0,1372.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.223031,42.431715]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2544/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2544","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2544/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2544/info.json","type":"ImageService2","height":7796,"width":6508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1592.7,6980.3 1597.5,7044.4 1580.8,6980.5 -0.0,7007.4 -0.0,-0.0 6508.0,0.0 6508.0,7242.5 5900.0,7244.0 5898.6,6907.1 1592.7,6980.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2544/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[660.0,7264.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.1808931,42.442856]}},{"type":"Feature","properties":{"resourceCoords":[5900.0,7244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.174437,42.442993]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2545/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2545","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2545/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2545/info.json","type":"ImageService2","height":7796,"width":6504},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 4911.8,0.0 5000.8,6885.7 -0.0,6996.3 0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2545/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5644.0,2368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.180839,42.440514]}},{"type":"Feature","properties":{"resourceCoords":[3660.0,2068.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.183278,42.440733]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2546/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2546","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"27"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2546/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2546/info.json","type":"ImageService2","height":7796,"width":6508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2326.1 2829.3,965.1 3783.0,948.8 5688.7,923.8 6508.0,932.3 6508.0,1807.1 6508.0,2894.7 4931.4,5966.5 3784.0,6900.0 146.1,7796.0 -0.0,7796.0 -0.0,2326.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2546/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3784.0,6900.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.182603,42.425571]}},{"type":"Feature","properties":{"resourceCoords":[2828.0,2940.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-83.183953,42.42915]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2547/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Detroit, Michigan | 1950 | sanborn03985_070 p2547","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T07:26:12Z","modified":"2026-09-22T07:26:12Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2547/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2547/info.json","type":"ImageService2","height":7796,"width":6512},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7796.0 -0.0,0.0 706.1,0.0 690.5,992.2 3748.9,954.8 3759.0,112.0 3828.5,0.0 4931.2,0.0 4998.2,2982.1 5728.3,2978.3 5729.0,5021.6 4983.0,5024.2 4967.1,7150.7 5724.4,7160.2 5731.2,7796.0 -0.0,7796.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd411m:g4114m:g4114dm:g03985195025:03985_25_1950-2547/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.18713463304066,42.4263053583857]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.17933211107861,42.4265070723152]}},{"type":"Feature","properties":{"resourceCoords":[6512.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.1790072678779,42.41956303596358]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7796.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-83.18680978983996,42.41936132203408]}}]}}]}