{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08492_030.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Dallas, Texas | 1952 | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"49"},{"label":"placed","value":"32"},{"label":"unplaced","value":"17"},{"label":"fit sources","value":"georef 18, georef-snap 14"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 15 panels"},{"label":"unplaced pages","value":"p0 (tier 4, 32.81970,-96.83433 +/-4607m); p904 (tier 4, 32.81970,-96.83433 +/-4607m); p905__1 (tier 2, 32.78809,-96.81519 +/-396m); p905__2 (tier 1, 32.79017,-96.81547 +/-319m); p908 (tier 1, 32.60287,-96.75645 +/-520m); p909__2 (tier 2, 32.78636,-96.82212 +/-148m); p911 (tier 4, 32.81970,-96.83433 +/-4607m); p913__2 (tier 2, 32.80949,-96.82084 +/-100m); p927 (tier 1, 32.83350,-96.84800 +/-256m); p931 (tier 2, 32.83742,-96.84986 +/-121m); p932 (tier 1, 32.78504,-96.81609 +/-540m); p935 (tier 2, 32.84794,-96.86392 +/-220m); p938__1 (tier 1, 32.81787,-96.83978 +/-138m); p938__3 (tier 2, 32.82272,-96.83892 +/-100m); p938__4 (tier 2, 32.82272,-96.83892 +/-100m); p938__5 (tier 2, 32.82272,-96.83892 +/-100m); p938__7 (tier 2, 32.82272,-96.83892 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0901/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p901","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0901/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0901","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1350.0 -0.0,-0.0 1088.0,0.0 1088.0,1350.0 -0.0,1350.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0901/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.81722011631443,32.78534311414232]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.81426475226482,32.786861654503014]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.81203924025733,32.78375697245937]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.81499460430695,32.78223843209868]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0902/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p902","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0902/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0902","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"111.6,56.2 993.5,50.6 985.5,1110.8 -0.0,1106.6 -0.0,1053.2 57.3,1053.1 61.6,823.4 -0.0,823.4 -0.0,56.3 63.5,56.2 62.5,96.5 111.3,96.5 111.6,56.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0902/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[480.0,826.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.816298,32.78676]}},{"type":"Feature","properties":{"resourceCoords":[480.0,53.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8176731,32.7886328]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0903/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p903","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0903/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0903","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,219.3 -0.0,-0.0 1088.0,0.0 1088.0,1350.0 1040.3,1350.0 1041.0,1237.0 131.2,1247.5 131.1,1289.0 80.8,1289.3 68.2,218.9 -0.0,219.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0903/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[506.0,458.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8190286,32.7904727]}},{"type":"Feature","properties":{"resourceCoords":[1041.0,1237.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8161971,32.7894063]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0906/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p906","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0906/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0906","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"35.9,99.0 845.5,94.9 845.6,29.6 1088.0,33.0 1088.0,1350.0 -0.0,1350.0 -0.0,1120.2 36.4,1118.9 35.9,99.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0906/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.8188417773743,32.78812985151283]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.81702274688885,32.785624515310886]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82069452862397,32.783713611261994]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82251355910942,32.78621894746394]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0907/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p907","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0907/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0907","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1266.0 -0.0,90.8 1045.7,76.5 1047.0,1156.7 1010.9,1158.0 1011.1,1350.0 942.3,1350.0 934.1,1160.8 639.7,1171.5 -0.0,1266.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0907/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82041605903456,32.79053590221271]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.81858749683552,32.788013093547136]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82228498144798,32.78609222598511]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82411354364702,32.78861503465068]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0909__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p909 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2356.4"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0909__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0909","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"481.1,1350.0 475.1,855.8 422.4,439.8 575.9,446.5 569.2,0.0 0.0,0.0 -0.0,1350.0 481.1,1350.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0909__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[458.1,681.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8233353,32.7882322]}},{"type":"Feature","properties":{"resourceCoords":[383.1,235.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.824374,32.789147]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0910/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p910","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0910/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0910","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1088.0,-0.0 1088.0,1025.4 1078.7,1020.8 943.1,1289.2 1065.7,1350.0 -0.0,1350.0 -0.0,0.0 1088.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0910/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82713235905155,32.797817476219834]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82095546095466,32.79489484200856]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.8252391620789,32.788406473850834]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.83141606017578,32.79132910806211]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0912/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p912","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0912/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0912","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"846.1,1350.0 -0.0,1350.0 -0.0,857.9 128.6,856.0 93.6,-0.0 1088.0,-0.0 1088.0,1215.2 845.7,1214.0 846.1,1350.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0912/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[411.0,502.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.821986,32.8109174]}},{"type":"Feature","properties":{"resourceCoords":[772.0,502.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8211479,32.8102126]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0913__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p913 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0913__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0913","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1350.0 1088.0,1350.0 1088.0,306.0 838.0,307.3 836.4,4.7 243.1,15.8 239.4,1216.6 -0.0,1214.7 -0.0,1350.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0913__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[646.0,513.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.819464,32.8087966]}},{"type":"Feature","properties":{"resourceCoords":[1005.0,1217.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.820268,32.8066951]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0914/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p914","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0914/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0914","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"155.5,1043.7 201.9,-0.0 1088.0,-0.0 1088.0,789.5 1064.2,788.6 1062.7,1222.4 997.6,1220.9 991.9,1350.0 224.0,1350.0 235.8,1020.0 155.5,1043.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0914/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.8231585883602,32.819633834105204]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.8179889253125,32.815599974747926]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82390280751578,32.81017097194319]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82907247056347,32.814204831300465]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0915/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p915","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0915/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0915","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1088.0,-0.0 1088.0,1146.8 949.4,1259.1 880.2,1133.2 802.2,1088.5 801.8,1113.5 61.6,1121.3 65.4,153.7 373.7,144.7 575.8,-0.0 1088.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0915/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82669034366629,32.823567065672485]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82167346503687,32.81933124845532]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82788370387821,32.814062927210934]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.83290058250763,32.8182987444281]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0916/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p916","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0916/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0916","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1023.6,0.0 1027.0,350.1 1066.4,353.0 1088.0,1350.0 -0.0,1350.0 -0.0,1322.2 141.6,1313.6 87.0,410.6 204.5,408.1 195.9,0.0 1023.6,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0916/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82439730459652,32.82014855855151]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.81943149027008,32.82418759524118]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.81350970885445,32.8189729394252]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.8184755231809,32.81493390273553]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0917__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p917 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2190.4"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"3209.6"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0917__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0917","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"48.8,568.6 75.1,783.0 233.0,965.7 242.9,1077.7 1024.9,1019.5 1050.7,1350.0 1088.0,1350.0 1088.0,547.6 179.9,557.1 48.8,568.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0917__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[348.0,1204.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.822416,32.820708]}},{"type":"Feature","properties":{"resourceCoords":[1032.0,971.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8198972,32.8241832]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0917__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p917 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"2236.0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0917__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0917","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"104.0,148.2 0.0,149.2 0.0,248.6 0.0,422.2 55.4,413.0 66.6,558.3 1088.0,547.6 1088.0,250.0 1088.0,-0.0 1058.8,-0.0 1056.9,116.1 104.0,129.4 104.0,148.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0917__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82959850244762,32.824317489870644]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82451107423965,32.82856824120927]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,559.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82191255207255,32.82637137609214]}},{"type":"Feature","properties":{"resourceCoords":[0.0,559.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.82699998028052,32.822120624753516]}},{"type":"Feature","properties":{"resourceCoords":[860.0,142.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8249171,32.8271194]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0918/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p918","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0918/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0918","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1067.2,23.3 1045.5,921.9 1088.0,922.6 1088.0,1350.0 -0.0,1350.0 -0.0,0.0 1067.2,23.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0918/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.83812876080908,32.822730672087275]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.83320853495323,32.81880616955602]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.83896230679203,32.81363930874438]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.84388253264788,32.81756381127563]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0919/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p919","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0919/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0919","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1350.0 -0.0,55.5 868.0,55.0 867.4,155.4 923.1,121.9 867.1,173.5 1088.0,178.8 1088.0,1031.6 1054.1,1075.8 939.0,1134.9 1042.5,1256.5 1073.2,1350.0 -0.0,1350.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0919/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[114.0,55.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8368157,32.8158745]}},{"type":"Feature","properties":{"resourceCoords":[868.0,55.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8334005,32.8187933]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0920/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p920","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0920/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0920","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1088.0,1224.3 -0.0,1215.3 -0.0,0.0 379.1,-0.0 377.9,471.8 693.8,472.1 699.1,34.0 1088.0,128.1 1088.0,1224.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0920/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1018.0,100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8283961,32.8322161]}},{"type":"Feature","properties":{"resourceCoords":[374.0,1219.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8365424,32.8302969]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0921/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p921","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0921/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0921","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"934.1,1150.9 637.5,1150.2 637.6,1120.7 157.8,1115.6 158.8,50.9 -0.0,12.7 -0.0,0.0 120.0,20.0 120.2,-0.0 1088.0,-0.0 1088.0,83.2 972.1,81.6 971.7,110.9 1088.0,114.4 1088.0,1350.0 930.2,1350.0 934.1,1150.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0921/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[771.0,784.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8286903,32.8265686]}},{"type":"Feature","properties":{"resourceCoords":[940.0,308.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8257042,32.8277972]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0922/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p922","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0922/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0922","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,30.1 583.5,28.1 583.4,-0.0 1088.0,-0.0 1088.0,31.0 1054.6,31.3 1056.6,241.5 1036.9,241.7 1035.8,609.9 856.2,584.8 860.6,961.5 880.1,978.5 1036.2,976.6 1031.5,1190.2 1056.7,1224.3 25.2,1223.5 31.3,672.2 -0.0,672.5 -0.0,30.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0922/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.83568459241573,32.82979838529453]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.83086778322638,32.82575334172058]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.83679873920039,32.8206954713672]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.84161554838974,32.824740514941155]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0923/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p923","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"23"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0923/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0923","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"277.5,1212.1 101.8,976.6 88.5,954.1 84.2,608.1 268.2,85.4 746.3,-0.0 765.0,-0.0 1088.0,40.0 1088.0,305.3 1088.0,994.4 1027.6,1210.2 277.5,1212.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0923/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1037.0,504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8295075,32.8210848]}},{"type":"Feature","properties":{"resourceCoords":[772.0,1210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.834056,32.8193452]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0924/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p924","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"13"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0924/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0924","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"195.9,596.0 68.3,591.0 63.5,41.2 85.0,54.0 198.2,52.2 198.3,21.8 -0.0,20.9 -0.0,0.0 247.1,-0.0 248.0,51.4 771.5,47.4 780.5,652.5 810.0,652.0 812.0,1171.3 884.4,1171.5 887.0,1350.0 192.8,1350.0 193.4,1180.9 82.7,1181.8 88.2,607.1 195.8,611.2 195.9,596.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0924/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[810.0,652.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8384992,32.8271636]}},{"type":"Feature","properties":{"resourceCoords":[71.0,1182.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8444534,32.8280269]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0925/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p925","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0925/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0925","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"976.4,1169.0 1088.0,1167.6 1088.0,1350.0 947.6,1350.0 -0.0,1350.0 -0.0,1179.0 107.4,1160.1 96.9,597.8 -0.0,598.1 -0.0,0.0 1088.0,-0.0 1088.0,30.6 974.0,33.0 952.2,20.2 959.4,573.9 1088.0,578.4 1088.0,593.8 979.5,590.0 976.4,1169.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0925/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[660.0,1176.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8458871,32.8292108]}},{"type":"Feature","properties":{"resourceCoords":[974.0,33.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8390487,32.8323909]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0926/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p926","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"6"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0926/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0926","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1033.5 -0.0,0.0 1088.0,-0.0 1088.0,1021.0 -0.0,1033.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0926/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[65.0,1130.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8500788,32.836957]}},{"type":"Feature","properties":{"resourceCoords":[969.0,1130.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8480396,32.8352136]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0928/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p928","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0928/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0928","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"950.5,-0.0 948.6,453.6 1056.8,453.2 1057.4,309.6 1088.0,309.4 1088.0,1350.0 -0.0,1350.0 -0.0,0.0 950.5,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0928/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.85023924952645,32.83746773558364]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.84775720945366,32.83533402117915]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.85088607400185,32.83272805927959]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.85336811407464,32.834861773684075]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0929/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p929","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0929/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0929","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"107.0,463.0 -0.0,463.1 -0.0,2.6 986.1,-0.0 1003.5,1124.2 788.7,1161.3 788.1,1350.0 141.4,1350.0 137.2,320.9 107.0,320.9 107.0,463.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0929/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[107.0,463.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8488787,32.8345203]}},{"type":"Feature","properties":{"resourceCoords":[107.0,1170.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8505422,32.833146]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0930/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p930","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0930/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0930","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"137.8,74.8 218.6,75.5 270.9,58.5 281.7,93.2 969.0,21.9 966.7,0.0 1088.0,0.0 1088.0,1350.0 114.5,1350.0 137.8,74.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0930/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.86137413305916,32.84129065813785]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.85626227976294,32.84554628310602]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.85002146943687,32.84017954388514]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.85513332273308,32.835923918916976]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0933/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p933","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0933/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0933","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 672.5,0.0 1088.0,74.1 1088.0,1350.0 -0.0,1350.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0933/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.86593436700427,32.837645391693535]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.8607178047473,32.841832741659374]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.85457736750612,32.8363558505869]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.8597939297631,32.83216850062106]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0934/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p934","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0934/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0934","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1350.0 -0.0,125.8 417.6,109.8 414.1,-0.0 1088.0,-0.0 1088.0,754.3 1049.1,762.1 1061.8,820.8 1041.0,1058.5 1088.0,1063.4 1088.0,1350.0 -0.0,1350.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0934/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.86178627319045,32.84853289448868]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.85672011304979,32.84499377593418]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.86191033913585,32.83967517390619]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.8669764992765,32.84321429246069]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0936/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p936","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0936/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0936","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1350.0 -0.0,-0.0 1088.0,-0.0 1088.0,1350.0 -0.0,1350.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0936/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[705.0,459.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8586694,32.8520069]}},{"type":"Feature","properties":{"resourceCoords":[705.0,29.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.856923,32.853917]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0937/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p937","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0937/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0937","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 1088.0,-0.0 1088.0,1134.7 38.2,1129.7 35.7,1350.0 -0.0,1350.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0937/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.85642293603509,32.861388015469025]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.85094377959719,32.85788420012814]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.85608299820733,32.85213287970023]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1350.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.86156215464523,32.85563669504111]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0938__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p938 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"219.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4132.4"},{"label":"split_canvas_h","value":"2434.4"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0938__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0938","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1088.0,235.5 1088.0,-0.0 277.7,0.0 275.8,0.0 223.1,183.3 162.1,153.4 136.8,219.4 420.1,606.8 489.0,606.4 738.5,605.1 1088.0,235.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0938__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[742.3,162.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8295297,32.833736]}},{"type":"Feature","properties":{"resourceCoords":[1057.0,238.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8283961,32.8322161]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0938__6/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Dallas, Texas | 1952 | sanborn08492_030 p938 [6]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"1950.0"},{"label":"split_canvas_y","value":"2415.6"},{"label":"split_canvas_w","value":"2402.0"},{"label":"split_canvas_h","value":"1428.0"}],"created":"2026-09-23T23:52:47Z","modified":"2026-09-23T23:52:47Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0938__6/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0938","type":"ImageService3","width":1088,"height":1350},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1021.4,721.0 488.5,714.6 487.5,951.5 1027.7,960.0 1021.4,721.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd403m:g4034m:g4034dm:g4034dm_g08492195209:08492_09_1952-0938__6/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[487.5,603.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.84009413590096,32.82527311589191]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,603.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.83727222313519,32.82293495197481]}},{"type":"Feature","properties":{"resourceCoords":[1088.0,960.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.83892937123044,32.82152217266625]}},{"type":"Feature","properties":{"resourceCoords":[487.5,960.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-96.8417512839962,32.82386033658335]}},{"type":"Feature","properties":{"resourceCoords":[970.1,718.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-96.8383586,32.8229402]}}]}}]}