{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn08291_013.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Chattanooga, Tennessee | 1950 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"125"},{"label":"placed","value":"106"},{"label":"unplaced","value":"19"},{"label":"fit sources","value":"georef 77, georef-snap 27, snap:0 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"14 sheet(s) cut into 35 panels"},{"label":"unplaced pages","value":"p0 (tier 4, 35.00223,-85.30600 +/-4190m); p401__2 (tier 1, 35.02497,-85.29231 +/-100m); p404 (tier 1, 35.01852,-85.29759 +/-509m); p408__1 (tier 1, 34.99027,-85.28946 +/-182m); p408__3 (tier 2, 34.99109,-85.29124 +/-233m); p408__4 (tier 2, 34.99109,-85.29124 +/-233m); p412__1 (tier 1, 35.00208,-85.27315 +/-100m); p439__2 (tier 1, 34.99373,-85.29047 +/-125m); p450 (tier 2, 34.98753,-85.28220 +/-100m); p454 (tier 1, 34.98920,-85.28469 +/-125m); p455__1 (tier 2, 34.98830,-85.28882 +/-202m); p703__3 (tier 1, 35.01994,-85.31875 +/-100m); p711__1 (tier 1, 35.00709,-85.31146 +/-100m); p732__2 (tier 2, 35.01120,-85.31383 +/-1104m); p743__1 (tier 1, 34.99521,-85.31512 +/-178m); p743__3 (tier 2, 34.99164,-85.32477 +/-1173m); p743__4 (tier 2, 34.99164,-85.32477 +/-1173m); p743__5 (tier 2, 34.99164,-85.32477 +/-1173m); p744__2 (tier 2, 35.00445,-85.34526 +/-216m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0401__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p401 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6584.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0401__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0401","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1646.0,1917.0 1646.0,1347.1 1517.6,1224.4 1646.0,1075.1 1646.0,547.2 1091.4,541.0 1083.8,0.0 -0.0,-0.0 -0.0,1949.0 1646.0,1917.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0401__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[140.0,722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2997316,35.0248038]}},{"type":"Feature","properties":{"resourceCoords":[1155.0,722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2978038,35.0245693]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0402/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p402","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0402/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0402","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"332.3,389.2 220.0,0.0 1613.0,0.0 1613.0,236.0 1354.6,238.0 1293.2,348.7 1306.3,1091.5 1613.0,1257.1 1613.0,1949.0 -0.0,1949.0 -0.0,1266.6 537.0,1100.4 537.2,1099.9 398.5,618.9 260.2,546.5 332.3,389.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0402/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1355.0,238.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2948024,35.0233934]}},{"type":"Feature","properties":{"resourceCoords":[260.0,547.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2972568,35.0237042]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0403/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p403","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0403/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0403","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1102.5,1525.1 1240.6,1677.8 1392.5,1949.0 -0.0,1949.0 -0.0,1748.8 288.1,1753.8 300.2,1070.1 -0.0,901.2 -0.0,166.9 62.6,58.6 318.0,61.1 319.1,0.0 1578.1,0.0 1577.6,669.3 1102.5,1525.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0403/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[167.0,997.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2954184,35.0217608]}},{"type":"Feature","properties":{"resourceCoords":[1577.0,86.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2917582,35.0222539]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0405/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p405","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"18"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0405/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0405","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"658.9,1821.7 665.7,1949.0 -0.0,1949.0 -0.0,1032.7 136.3,1032.0 121.9,987.8 -0.0,829.4 -0.0,800.4 225.8,387.9 224.3,51.2 -0.0,52.5 -0.0,0.0 1594.9,0.0 1595.0,75.1 1471.0,79.0 1467.4,1819.4 658.9,1821.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0405/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1471.0,1308.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2889018,35.0164466]}},{"type":"Feature","properties":{"resourceCoords":[1471.0,79.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2867194,35.0204913]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0406/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p406","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"24"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0406/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0406","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"189.6,1834.0 181.7,83.0 306.4,78.2 305.8,0.0 1613.0,0.0 1613.0,861.0 1254.0,857.5 1249.4,1162.2 1421.2,1161.8 1426.4,1850.4 1028.3,1852.8 1028.2,1826.1 189.6,1834.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0406/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1425.0,1621.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2845233,35.0136511]}},{"type":"Feature","properties":{"resourceCoords":[189.0,1060.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2884405,35.017294]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0407/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p407","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0407/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0407","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1192.6 -0.0,889.5 358.7,885.5 345.5,29.3 -0.0,36.5 0.0,-0.0 1414.0,9.8 1418.9,978.5 1484.7,978.2 1500.2,1565.1 181.3,1609.0 171.6,1188.7 -0.0,1192.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0407/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28218034909526,35.01928815109783]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27567869009435,35.0167589543168]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27930747542445,35.01041321816051]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28580913442535,35.01294241494154]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0408__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p408 [2]","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"20"},{"label":"split_canvas_x","value":"1603.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4848.4"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0408__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0408","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"423.4,1653.3 425.1,1731.6 802.4,1731.0 1177.2,1653.4 1278.1,1502.3 1279.0,1465.9 1302.4,1465.9 1514.1,1149.0 1553.0,532.1 780.0,0.0 662.0,11.0 553.3,502.5 401.2,613.6 401.0,1610.3 401.0,1653.3 423.4,1653.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0408__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1177.3,1729.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2912893,34.9876125]}},{"type":"Feature","properties":{"resourceCoords":[425.9,1491.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.294628,34.9884141]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0409/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p409","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0409/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0409","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1568.5,1949.0 -0.0,1949.0 -0.0,-0.0 1598.8,0.0 1568.5,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0409/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27661698784941,35.017084806498964]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.2733698870608,35.015838466300266]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.2751537476287,35.0126769094323]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27840084841732,35.013923249631]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0410/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p410","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0410/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0410","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 20.2,0.0 1613.0,0.0 1613.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0410/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[602.0,1126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2735244,35.0136727]}},{"type":"Feature","properties":{"resourceCoords":[1143.0,1126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2726189,35.0133463]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0411/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p411","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0411/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0411","type":"ImageService3","width":1639,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1570.9,0.0 1605.1,0.0 1604.8,72.0 1639.0,72.2 1639.0,1468.3 1592.3,1467.8 1602.8,1949.0 -0.0,1949.0 -0.0,160.4 1564.6,202.4 1570.9,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0411/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1007.0,396.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2764889,35.0128136]}},{"type":"Feature","properties":{"resourceCoords":[1560.0,396.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2754786,35.0124526]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0412__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p412 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"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":"5986.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0412__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0412","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1384.4 1613.0,0.0 1456.2,0.0 1456.1,104.6 144.1,102.3 146.0,1369.8 1613.0,1384.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0412__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[695.0,1374.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2750892,35.0103922]}},{"type":"Feature","properties":{"resourceCoords":[86.0,706.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2757251,35.011933]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0413/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p413","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"17"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0413/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0413","type":"ImageService3","width":1639,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1550.1,1845.8 1605.9,1949.0 912.0,1949.0 940.9,1928.8 736.2,1612.0 -0.0,1605.3 -0.0,0.0 44.9,0.0 44.0,373.4 707.5,378.9 701.1,248.1 1507.0,247.6 1506.7,1713.1 1550.1,1845.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0413/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[181.0,920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2963672,35.014471]}},{"type":"Feature","properties":{"resourceCoords":[1507.0,502.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2902753,35.0139279]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0414/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p414","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"21"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0414/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0414","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1417.0,1751.0 899.4,1759.7 899.5,1949.0 262.0,1949.0 161.4,1718.2 139.9,249.0 972.9,236.2 973.1,262.8 1174.5,261.9 1180.0,490.2 1613.0,484.2 1613.0,986.7 1408.5,987.9 1417.0,1751.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0414/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[398.0,751.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2897098,35.0127389]}},{"type":"Feature","properties":{"resourceCoords":[1417.0,1751.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2874626,35.0079392]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0415/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p415","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0415/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0415","type":"ImageService3","width":1639,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"647.0,420.9 1146.8,432.9 1148.8,0.0 1376.0,0.0 1376.2,193.9 1639.0,196.6 1639.0,1507.9 1415.7,1506.4 1415.1,1949.0 95.2,1949.0 141.3,211.1 649.5,216.5 647.0,420.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0415/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28810646972997,35.00860092381118]}},{"type":"Feature","properties":{"resourceCoords":[1639.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28525354778985,35.01405338492067]}},{"type":"Feature","properties":{"resourceCoords":[1639.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27739287090363,35.011255123456614]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28024579284374,35.00580266234712]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0416/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p416","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0416/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0416","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"300.1,408.0 586.4,408.0 581.4,189.1 1343.1,197.8 1344.5,0.0 1613.0,0.0 1613.0,1698.9 1296.3,1702.2 1294.8,1757.4 301.8,1739.3 300.1,408.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0416/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27827577406755,35.01228353642485]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27182975234831,35.00998091799733]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.2752028053595,35.003556326520275]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28164882707874,35.005858944947796]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0417/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p417","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"12"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0417/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0417","type":"ImageService3","width":1639,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1431.4,1764.4 1429.0,1811.0 937.7,1809.2 938.4,1949.0 -0.0,1949.0 0.0,-0.0 859.0,0.0 1065.5,313.3 1036.9,333.6 1400.0,330.3 1501.9,484.4 1273.2,636.6 1639.0,1197.6 1639.0,1624.5 1431.4,1764.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0417/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1429.0,1811.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2963438,35.0045348]}},{"type":"Feature","properties":{"resourceCoords":[932.0,1192.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2972266,35.007324]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0418__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p418 [1]","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"31"},{"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":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0418__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0418","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"993.8,1144.4 1025.5,1194.0 1022.5,1270.9 1081.6,1229.0 1079.7,1031.4 1547.5,1031.0 1547.7,911.0 1613.0,911.7 1613.0,866.2 1494.3,865.8 1495.1,658.9 1555.4,658.9 1553.9,150.6 1035.0,152.0 1032.4,341.7 65.6,337.1 167.2,493.7 -0.0,603.0 -0.0,748.3 494.6,1517.5 729.3,1360.9 707.7,1327.2 993.8,1144.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0418__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1552.0,404.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2879178,35.007109]}},{"type":"Feature","properties":{"resourceCoords":[1035.0,152.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2895482,35.0086852]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0418__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p418 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"4318.8"},{"label":"split_canvas_y","value":"4124.0"},{"label":"split_canvas_w","value":"2133.2"},{"label":"split_canvas_h","value":"3672.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0418__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0418","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1249.7,1876.8 1251.0,1949.0 1613.0,1949.0 1613.0,1031.0 1079.7,1031.4 1083.7,1449.2 1239.5,1456.5 1229.2,1875.3 1249.7,1876.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0418__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1239.5,1456.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2774425,34.9987933]}},{"type":"Feature","properties":{"resourceCoords":[1239.5,1876.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2781568,34.9973727]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0419/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p419","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"16"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0419/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0419","type":"ImageService3","width":1639,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"780.0,193.0 1190.6,463.8 1218.2,426.1 1250.8,419.4 1518.0,422.3 1516.4,1114.5 1639.0,1116.5 1639.0,1468.5 1518.0,1468.0 1519.1,1523.5 509.3,1527.4 236.4,1949.0 -0.0,1949.0 -0.0,0.0 229.2,0.0 703.9,310.5 780.0,193.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0419/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1134.0,1118.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2961401,35.0021593]}},{"type":"Feature","properties":{"resourceCoords":[440.0,1634.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2988205,34.9999174]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0420/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p420","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0420/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0420","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"90.3,1949.0 -0.0,1889.4 -0.0,419.5 210.4,420.3 485.7,0.0 1613.0,0.0 1613.0,989.0 1513.7,988.1 1514.5,1337.4 1613.0,1336.5 1613.0,1411.5 1409.4,1411.2 1409.5,1686.8 1613.0,1688.7 1613.0,1949.0 90.3,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0420/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.30069951545832,35.00006041847835]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.29369342089454,35.000988445528336]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.29233415588696,34.994004715591075]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.29934025045074,34.99307668854109]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0421/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p421","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0421/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0421","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1111.0,1949.0 1109.7,1691.6 621.8,1691.7 623.2,1949.0 -0.0,1949.0 -0.0,1553.4 115.3,1553.0 110.5,97.7 1571.4,102.7 1601.8,1949.0 1111.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0421/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1109.0,802.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2855727,35.0067972]}},{"type":"Feature","properties":{"resourceCoords":[1109.0,1557.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2862759,35.0055012]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0422/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p422","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0422/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0422","type":"ImageService3","width":1613,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1601.5,1949.0 68.6,1949.0 44.6,38.0 1574.1,60.2 1601.5,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0422/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28400743242506,35.00773927866647]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28080479773605,35.00656954402775]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28251826622409,35.003377465435385]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28572090091309,35.00454720007411]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0423/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p423","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0423/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0423","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1587.4,103.0 1566.2,1617.9 1006.6,1621.5 1001.1,1949.0 46.8,1949.0 26.8,84.8 1587.4,103.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0423/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28094077950684,35.00660826976289]}},{"type":"Feature","properties":{"resourceCoords":[1633.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27769446791241,35.00543548415514]}},{"type":"Feature","properties":{"resourceCoords":[1633.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27939134163914,35.00223945587166]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28263765323356,35.00341224147941]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0424/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p424","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0424/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0424","type":"ImageService3","width":1617,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1617.0,1949.0 48.7,1949.0 102.9,80.3 965.7,108.8 969.9,0.0 1617.0,0.0 1617.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0424/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27801547006892,35.005506753866825]}},{"type":"Feature","properties":{"resourceCoords":[1617.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.2747239407391,35.00436485430093]}},{"type":"Feature","properties":{"resourceCoords":[1617.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27639245147145,35.00109219895245]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.27968398080128,35.00223409851834]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0425/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p425","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0425/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0425","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1254.1,27.7 1633.0,0.0 1633.0,1293.0 1183.7,1890.0 92.8,1849.3 107.1,1417.5 -0.0,1414.6 -0.0,1151.9 115.6,1161.3 1254.1,27.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0425/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.29442101667736,35.00454710457715]}},{"type":"Feature","properties":{"resourceCoords":[1633.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.29083030434147,35.005150065737745]}},{"type":"Feature","properties":{"resourceCoords":[1633.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28995791917431,35.0016148738834]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.2935486315102,35.0010119127228]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0426/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p426","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0426/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0426","type":"ImageService3","width":1617,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,356.6 124.2,357.6 123.9,267.2 535.5,267.3 534.0,0.0 1040.8,0.0 1056.4,267.4 1551.8,267.6 1553.2,370.4 1617.0,371.2 1617.0,1862.6 0.9,1857.4 -0.0,356.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0426/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[536.0,361.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.287742,35.0050438]}},{"type":"Feature","properties":{"resourceCoords":[1092.0,1858.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2879624,35.0021621]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0427/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p427","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"21"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0427/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0427","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"52.2,336.4 50.6,206.3 1633.0,213.8 1633.0,1949.0 1237.7,1949.0 1242.5,1838.5 114.6,1825.0 132.6,337.1 52.2,336.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0427/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[550.0,342.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2846962,35.0039059]}},{"type":"Feature","properties":{"resourceCoords":[679.0,1830.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2857699,35.0013462]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0428/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p428","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0428/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0428","type":"ImageService3","width":1617,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"988.2,1703.7 986.2,1949.0 119.4,1949.0 132.8,321.4 1004.1,327.1 1009.9,0.0 1566.0,0.0 1544.1,1717.8 988.2,1703.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0428/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[995.0,1237.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.281457,35.0012052]}},{"type":"Feature","properties":{"resourceCoords":[58.0,1237.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2833365,35.0018724]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0429/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p429","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0429/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0429","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.8,387.7 1633.0,352.0 1633.0,858.3 1412.9,865.6 1441.5,1730.0 81.8,1734.0 77.8,387.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0429/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[86.0,1258.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2803422,35.0007895]}},{"type":"Feature","properties":{"resourceCoords":[647.0,572.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2786271,35.0014881]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0430/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p430","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0430/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0430","type":"ImageService3","width":1617,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"195.6,1843.2 200.8,931.0 89.2,924.4 85.2,88.9 1184.3,93.9 1189.7,940.0 1231.0,941.7 1238.1,1087.4 1617.0,1075.7 1617.0,1859.5 195.6,1843.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0430/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1267.0,1855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2788701,34.9958183]}},{"type":"Feature","properties":{"resourceCoords":[192.0,1388.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2806193,34.997388]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0431/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p431","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0431/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0431","type":"ImageService3","width":1633,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1633.0,84.2 1633.0,1906.5 1586.5,1908.8 1613.7,1949.0 764.9,1949.0 111.5,955.5 130.0,81.0 1633.0,84.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0431/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[130.0,81.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2901635,35.0029642]}},{"type":"Feature","properties":{"resourceCoords":[1239.0,81.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2879624,35.0021621]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0432/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p432","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0432/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0432","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"240.7,1868.6 221.8,82.0 1485.0,82.0 1469.5,1856.6 240.7,1868.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0432/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[937.0,934.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2865273,34.9999259]}},{"type":"Feature","properties":{"resourceCoords":[1485.0,82.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2846374,35.0009183]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0433/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p433","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"16"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0433/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0433","type":"ImageService3","width":1619,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"130.1,468.1 526.4,469.6 526.8,342.0 1385.2,338.0 1383.8,754.4 1506.4,1073.7 1515.3,1949.0 97.2,1949.0 130.1,468.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0433/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[981.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2842582,34.9978231]}},{"type":"Feature","properties":{"resourceCoords":[1386.0,95.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2818765,35.0004436]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0434/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p434","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"23"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0434/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0434","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1421.0,1869.1 340.1,1860.1 324.0,1074.9 197.6,754.0 194.3,88.8 1308.1,94.4 1312.8,939.7 1425.7,946.2 1421.0,1869.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0434/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[880.0,1866.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2821011,34.9970346]}},{"type":"Feature","properties":{"resourceCoords":[750.0,96.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2807736,35.0000246]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0435/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p435","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0435/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0435","type":"ImageService3","width":1619,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"294.3,771.3 471.9,655.2 471.5,351.5 260.8,30.9 1473.5,24.5 1473.8,1621.7 1541.9,1621.6 1542.4,1949.0 683.1,1949.0 -0.0,917.4 -0.0,770.1 294.3,771.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0435/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[472.0,772.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2891301,34.9975702]}},{"type":"Feature","properties":{"resourceCoords":[1557.0,772.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2869612,34.9967718]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0436/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p436","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"17"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0436/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0436","type":"ImageService3","width":1623,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,357.6 75.7,357.5 82.4,167.4 1502.1,155.2 1503.4,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0436/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1502.0,1271.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2842664,34.9954472]}},{"type":"Feature","properties":{"resourceCoords":[1502.0,58.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2831733,34.9974407]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0437/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p437","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0437/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0437","type":"ImageService3","width":1619,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"146.1,1949.0 126.1,40.0 1619.0,40.7 1619.0,1285.0 1397.7,1287.4 1398.0,1937.4 146.1,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0437/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[138.0,1266.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2842664,34.9954472]}},{"type":"Feature","properties":{"resourceCoords":[1222.0,655.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.281567,34.9956278]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0438/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p438","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0438/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0438","type":"ImageService3","width":1627,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"221.6,55.1 1259.8,55.4 1259.3,0.0 1627.0,0.0 1627.0,1949.0 -0.0,1949.0 -0.0,1299.9 221.0,1297.6 221.6,55.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0438/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[375.0,1296.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2810495,34.9941997]}},{"type":"Feature","properties":{"resourceCoords":[1464.0,56.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2777633,34.9953979]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0439__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p439 [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":"4069.2"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0439__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0439","type":"ImageService3","width":1619,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"734.5,1888.6 774.8,1698.6 873.7,1011.2 796.8,995.8 918.6,389.0 386.5,281.3 110.5,1667.9 35.4,1801.2 95.4,1949.0 245.2,1949.0 542.2,1858.8 734.5,1888.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0439__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[60.0,293.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2897348,34.9953341]}},{"type":"Feature","properties":{"resourceCoords":[269.1,890.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2895863,34.9942708]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0439__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p439 [3]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"2954.8"},{"label":"split_canvas_y","value":"3308.4"},{"label":"split_canvas_w","value":"3521.2"},{"label":"split_canvas_h","value":"4487.6"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0439__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0439","type":"ImageService3","width":1619,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1458.1,1949.0 1619.0,1702.0 1619.0,1376.3 934.5,932.0 938.4,1907.8 1008.4,1800.7 1252.4,1949.0 1458.1,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0439__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[935.5,1150.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2904736,34.99907]}},{"type":"Feature","properties":{"resourceCoords":[935.5,1841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2902301,34.9978079]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0440/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p440","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0440/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0440","type":"ImageService3","width":1627,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"117.3,1069.6 -0.0,1069.6 -0.0,155.0 1446.0,156.7 1466.3,1811.1 109.8,1796.3 117.3,1069.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0440/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1009.0,275.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2858509,34.9944582]}},{"type":"Feature","properties":{"resourceCoords":[579.0,275.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2867078,34.9947725]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0441/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p441","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0441/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0441","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"172.3,1868.8 150.2,125.0 1353.7,126.5 1355.5,248.6 1615.0,249.9 1597.9,1873.8 172.3,1868.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0441/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1233.0,248.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2828091,34.9933358]}},{"type":"Feature","properties":{"resourceCoords":[150.0,248.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2849825,34.9941332]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0442/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p442","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0442/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0442","type":"ImageService3","width":1631,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"236.3,1879.0 -0.0,125.3 1631.0,164.9 1631.0,1949.0 558.2,1949.0 479.9,1900.7 236.3,1879.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0442/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[926.0,1050.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2813932,34.9912607]}},{"type":"Feature","properties":{"resourceCoords":[926.0,1844.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.282083,34.9899494]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0443/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p443","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0443/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0443","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"272.3,1760.5 247.8,1761.0 247.1,1492.9 -0.0,1489.6 0.0,-0.0 373.8,0.0 374.0,88.6 937.4,79.8 937.1,0.0 1615.0,0.0 1615.0,117.4 1487.5,274.1 1497.7,1735.2 949.4,1746.5 946.8,1493.5 260.1,1490.7 272.3,1760.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0443/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[374.0,786.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2938956,35.0037421]}},{"type":"Feature","properties":{"resourceCoords":[374.0,91.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2941299,35.0049779]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0444/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p444","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0444/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0444","type":"ImageService3","width":1631,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"202.4,1848.1 224.0,554.0 -0.0,550.7 -0.0,438.4 245.1,442.8 253.2,0.0 388.1,0.0 384.4,445.3 954.3,455.6 959.0,0.0 1510.6,0.0 1489.2,1866.2 202.4,1848.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0444/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[379.0,1156.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2931314,34.9999759]}},{"type":"Feature","properties":{"resourceCoords":[1506.0,458.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2909723,35.0015559]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0445/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p445","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0445/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0445","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1437.5 -0.0,727.7 200.4,729.5 201.9,16.6 1491.2,15.9 1491.6,1949.0 363.9,1949.0 364.5,1434.3 -0.0,1437.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0445/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[365.0,731.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2926488,34.9974888]}},{"type":"Feature","properties":{"resourceCoords":[1491.0,1431.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2899816,34.9965758]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0446/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p446","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0446/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0446","type":"ImageService3","width":1631,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"332.4,455.7 -0.0,453.4 -0.0,-0.0 466.8,0.0 467.0,291.8 1379.8,290.2 1380.0,370.9 1618.9,527.6 1023.4,1434.6 931.8,1508.1 932.3,1630.5 1039.0,1673.3 1276.4,1693.8 1405.0,1770.0 1282.8,1949.0 -0.0,1949.0 -0.0,884.4 332.2,883.8 332.4,455.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0446/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[932.0,640.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2908423,34.9947444]}},{"type":"Feature","properties":{"resourceCoords":[932.0,1664.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.290407,34.9925134]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0447/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p447","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0447/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0447","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,931.6 -0.0,476.4 150.1,376.7 154.3,0.0 1501.8,0.0 1516.4,1629.1 1450.5,1628.4 1450.1,1628.4 465.3,1618.0 -0.0,931.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0447/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28930829657747,34.99274818404778]}},{"type":"Feature","properties":{"resourceCoords":[1615.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28608435105971,34.9915309525086]}},{"type":"Feature","properties":{"resourceCoords":[1615.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28786486543021,34.98832103381264]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.29108881094797,34.98953826535182]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0448/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p448","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"21"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0448/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0448","type":"ImageService3","width":1631,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1498.9,96.7 1489.6,1107.2 1631.0,1108.5 1631.0,1949.0 1410.1,1949.0 1280.4,1663.0 708.0,1949.0 62.9,1949.0 63.2,1767.5 -0.0,1630.0 63.5,1631.6 66.2,87.0 1498.9,96.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0448/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[607.0,1110.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2862239,34.9893832]}},{"type":"Feature","properties":{"resourceCoords":[607.0,588.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.28576,34.9902383]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0449/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p449","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0449/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0449","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"66.3,1187.1 88.5,74.0 103.4,175.3 349.3,195.3 428.4,243.4 1511.4,236.3 1511.2,0.0 1615.0,0.0 1615.0,1949.0 200.8,1949.0 208.6,1189.1 66.3,1187.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0449/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28355842344469,34.99074418192324]}},{"type":"Feature","properties":{"resourceCoords":[1615.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28034106014584,34.98958879392841]}},{"type":"Feature","properties":{"resourceCoords":[1615.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28203106960854,34.98638534766954]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28524843290738,34.98754073566437]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0451/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p451","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0451/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0451","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"810.1,156.2 810.1,0.0 1563.8,0.0 1562.3,1548.1 1615.0,1548.5 1615.0,1949.0 -0.0,1949.0 0.0,0.0 47.7,0.0 51.1,157.4 810.1,156.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0451/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1564.0,636.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2912668,34.9867428]}},{"type":"Feature","properties":{"resourceCoords":[1564.0,152.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2912893,34.9876125]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0452/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p452","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0452/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0452","type":"ImageService3","width":1631,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"198.4,94.0 1295.2,184.0 1488.9,676.4 1571.1,1176.2 1210.4,1147.1 1134.1,1949.0 -0.0,1949.0 -0.0,1899.5 102.2,1907.8 135.1,1504.5 82.1,1499.8 198.4,94.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0452/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1295.0,184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2888991,34.9876531]}},{"type":"Feature","properties":{"resourceCoords":[842.0,1567.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2895709,34.9851233]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0453/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p453","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0453/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0453","type":"ImageService3","width":1615,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"232.0,640.1 -0.0,174.0 151.8,179.7 268.9,0.0 1615.0,0.0 1615.0,1949.0 -0.0,1949.0 -0.0,1129.8 360.7,1124.7 232.0,640.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0453/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.2888873323403,34.98796460571484]}},{"type":"Feature","properties":{"resourceCoords":[1615.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28536818108371,34.98798720144023]}},{"type":"Feature","properties":{"resourceCoords":[1615.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28533513082219,34.98448317038818]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.28885428207877,34.9844605746628]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0455__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p455 [2]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"20"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6472.0"},{"label":"split_canvas_h","value":"4692.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0455__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0455","type":"ImageService3","width":1618,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"61.5,1099.2 1309.3,1100.8 1427.0,921.6 1618.0,923.0 1618.0,715.6 1541.7,680.3 1618.0,519.6 1618.0,364.7 877.8,0.0 52.6,0.0 61.5,1099.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0455__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[814.0,1094.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2896396,34.9876423]}},{"type":"Feature","properties":{"resourceCoords":[814.0,615.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.2896555,34.9885022]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0701/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p701","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0701/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0701","type":"ImageService3","width":1618,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"777.2,1666.3 652.8,1593.7 -0.0,1575.1 -0.0,0.0 1492.3,0.0 1428.1,1615.8 943.1,1701.7 777.2,1666.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0701/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[950.0,1294.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3213918,35.0212932]}},{"type":"Feature","properties":{"resourceCoords":[1432.0,1294.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.320425,35.0209496]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0702/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p702","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0702/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0702","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1547.8,1708.2 993.6,1737.2 884.7,1949.0 -0.0,1949.0 -0.0,0.0 745.5,0.0 945.4,95.6 1038.8,99.7 1037.5,0.0 1521.1,0.0 1547.8,1708.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0702/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1047.0,870.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.322457,35.019374]}},{"type":"Feature","properties":{"resourceCoords":[1543.0,1402.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3219687,35.018136]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0703__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p703 [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":"6472.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0703__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0703","type":"ImageService3","width":1618,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"112.6,481.5 105.0,832.0 100.9,1840.5 1234.6,1826.7 1280.9,1750.3 1276.2,523.2 953.4,527.5 227.6,143.9 230.9,0.0 131.4,0.0 126.6,454.1 112.6,481.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0703__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[105.0,832.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.320425,35.0209496]}},{"type":"Feature","properties":{"resourceCoords":[600.0,1831.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3202199,35.0169376]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0703__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p703 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"910.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5561.6"},{"label":"split_canvas_h","value":"2110.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0703__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0703","type":"ImageService3","width":1618,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1617.3,372.4 1618.0,-0.0 329.6,-0.0 328.7,159.1 393.1,180.2 373.6,221.1 953.4,527.5 1529.0,519.8 1508.0,500.7 1617.3,372.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0703__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[560.5,235.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3263312,35.008074]}},{"type":"Feature","properties":{"resourceCoords":[324.6,151.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3275529,35.0080934]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0704/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p704","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"10"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0704/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0704","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1851.9 -0.0,-0.0 1636.0,0.0 1636.0,1949.0 1593.8,1949.0 1561.5,1864.2 1502.5,1840.5 -0.0,1851.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0704/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1279.0,578.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3099946,35.0183263]}},{"type":"Feature","properties":{"resourceCoords":[765.0,1837.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3143361,35.0148864]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0705/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p705","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0705/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0705","type":"ImageService3","width":1618,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1515.7,1949.0 1522.3,1650.8 1412.8,1648.3 1336.0,1797.9 517.6,1790.0 555.4,1629.2 -0.0,1616.8 0.0,0.0 26.9,0.0 30.4,346.6 902.5,337.7 1007.7,127.8 1553.8,93.7 1594.7,1949.0 1515.7,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0705/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1566.0,482.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3225918,35.016993]}},{"type":"Feature","properties":{"resourceCoords":[518.0,1790.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3259408,35.0156773]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0706/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p706","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0706/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0706","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"234.5,933.5 321.7,930.0 278.7,424.9 96.7,441.3 218.2,0.0 1636.0,0.0 1636.0,1015.3 1480.0,982.3 1490.0,1772.3 1636.0,1843.2 1636.0,1949.0 120.4,1949.0 110.3,1665.5 234.5,933.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0706/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[447.0,925.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3271332,35.0139951]}},{"type":"Feature","properties":{"resourceCoords":[1211.0,925.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3263379,35.0152755]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0707/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p707","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"6"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0707/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0707","type":"ImageService3","width":1618,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"212.2,1949.0 204.6,1750.1 169.0,1749.5 202.7,1100.0 243.1,1101.2 250.2,152.0 1444.0,136.5 1433.8,1764.1 1289.5,1764.7 1285.4,1949.0 212.2,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0707/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1470.0,1762.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3202517,35.0106591]}},{"type":"Feature","properties":{"resourceCoords":[757.0,142.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3202199,35.0169376]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0708/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p708","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0708/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0708","type":"ImageService3","width":1636,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1762.0 -0.0,166.2 1522.2,130.7 1582.1,153.5 1615.5,238.3 1636.0,237.9 1636.0,1648.1 1617.0,1648.1 1613.8,1756.1 -0.0,1762.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0708/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.31718884895625,35.01651256749202]}},{"type":"Feature","properties":{"resourceCoords":[1636.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.31065072827428,35.01405438417242]}},{"type":"Feature","properties":{"resourceCoords":[1636.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3142012211094,35.00762993882449]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32073934179137,35.0100881221441]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0709/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p709","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0709/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0709","type":"ImageService3","width":1616,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"821.0,1847.2 572.0,1850.0 576.7,1789.5 -0.0,1778.7 -0.0,0.0 902.1,0.0 1346.5,158.7 1398.2,1949.0 819.1,1949.0 821.0,1847.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0709/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1576.0,1429.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3291193,35.011616]}},{"type":"Feature","properties":{"resourceCoords":[572.0,1850.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3314521,35.0116395]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0710/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p710","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0710/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0710","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1922.9 -0.0,0.0 528.4,0.0 523.9,90.4 1271.9,283.1 1637.0,300.9 1637.0,1949.0 717.5,1949.0 691.4,1859.3 195.0,1835.5 192.6,1927.5 -0.0,1922.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0710/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32833118450382,35.014139805773354]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32499056440044,35.013029537842485]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32659320668608,35.0097490033524]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32993382678947,35.010859271283266]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0711__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p711 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6464.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0711__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0711","type":"ImageService3","width":1616,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1616.0,1221.5 1616.0,144.1 1143.5,152.8 1143.5,52.5 898.0,59.8 901.5,0.0 -0.0,0.0 0.0,1208.2 579.4,1207.5 589.2,1949.0 1616.0,1949.0 1616.0,1814.8 1557.3,1828.5 1616.0,1785.2 1616.0,1234.8 1616.0,1221.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0711__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1144.0,52.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3309602,35.01147]}},{"type":"Feature","properties":{"resourceCoords":[1144.0,447.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.331316,35.0108314]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0712/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p712","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0712/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0712","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"212.3,1752.0 204.3,152.3 497.3,143.8 494.8,50.7 997.5,48.3 1028.8,137.5 1637.0,105.4 1637.0,758.1 1526.7,793.4 1571.5,1270.0 212.3,1752.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0712/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.33037163284838,35.01137526664723]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32714420218554,35.01013570650047]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32893341157612,35.00696621438271]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.33216084223896,35.008205774529465]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0713/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p713","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0713/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0713","type":"ImageService3","width":1616,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,147.5 95.1,180.1 138.6,55.6 227.8,3.4 79.3,49.6 62.1,0.0 1429.7,0.0 1421.0,282.0 1547.9,285.9 1571.6,1853.3 929.8,1883.2 857.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0713/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.33190721130102,35.0083926291237]}},{"type":"Feature","properties":{"resourceCoords":[1616.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32837027906815,35.00811467043232]}},{"type":"Feature","properties":{"resourceCoords":[1616.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3287766899127,35.00459596691948]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.33231362214556,35.00487392561086]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0714__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p714 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6548.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0714__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0714","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"198.8,283.5 123.6,1856.5 1611.2,1744.2 1600.2,1949.0 1637.0,1949.0 1637.0,748.1 1044.6,757.9 1038.5,748.5 1031.6,751.0 735.2,334.6 198.8,283.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0714__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[483.0,793.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.327987,35.0066746]}},{"type":"Feature","properties":{"resourceCoords":[746.0,1739.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3274748,35.0049536]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0714__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p714 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"3628.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2920.0"},{"label":"split_canvas_h","value":"3031.6"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0714__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0714","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1637.0,422.9 1485.8,442.7 1333.3,122.0 1589.5,-0.0 1166.3,-0.0 1063.5,467.7 914.5,472.3 915.8,557.4 1044.6,757.9 1637.0,748.1 1637.0,422.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0714__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[907.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32864910212115,35.00898732766179]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32707492423177,35.00882307345616]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,757.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3272816892743,35.00747477548118]}},{"type":"Feature","properties":{"resourceCoords":[907.0,757.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32885586716367,35.00763902968681]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0715/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p715","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0715/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0715","type":"ImageService3","width":1609,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,166.7 826.2,183.9 900.5,119.0 1394.2,106.0 1377.7,1714.7 301.3,1742.8 306.8,1949.0 -0.0,1949.0 -0.0,166.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0715/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1088.0,910.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.329985,35.0033925]}},{"type":"Feature","properties":{"resourceCoords":[1538.0,1749.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3291395,35.0018313]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0716/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p716","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0716/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0716","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1637.0,0.0 1637.0,1747.8 1173.5,1756.2 866.8,1827.6 -0.0,1824.8 -0.0,198.7 768.7,41.6 1637.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0716/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32914696524897,35.00514773076233]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32556949275188,35.004893939654366]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3259357943124,35.00138043724277]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32951326680949,35.00163422835074]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0717/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p717","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0717/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0717","type":"ImageService3","width":1609,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"713.4,1949.0 320.8,1949.0 266.4,1707.8 -0.0,1696.6 0.0,0.0 1227.0,0.0 1225.8,37.9 1589.8,57.1 1556.4,1859.9 716.6,1851.5 713.4,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0717/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.33184014934031,35.00200840822827]}},{"type":"Feature","properties":{"resourceCoords":[1609.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32828985074642,35.00186644100117]}},{"type":"Feature","properties":{"resourceCoords":[1609.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3284983126606,34.998318814839145]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.33204861125449,34.998460782066246]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0718/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p718","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0718/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0718","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"500.4,1895.0 113.5,1891.5 112.1,64.2 453.6,66.3 450.9,0.0 1637.0,0.0 1637.0,1949.0 503.0,1949.0 500.4,1895.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0718/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32857264337265,35.0018928377541]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3250126267216,35.001693501612394]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32530032106153,34.998197005265034]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32886033771258,34.99839634140674]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0719/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p719","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0719/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0719","type":"ImageService3","width":1609,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1483.7,100.4 1495.8,1166.8 1362.8,1778.1 945.3,1681.3 964.0,1552.3 -0.0,1586.0 0.0,0.0 569.6,0.0 635.3,243.3 1035.2,245.2 1034.2,127.1 1483.7,100.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0719/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.33266452863562,34.99896839777166]}},{"type":"Feature","properties":{"resourceCoords":[1609.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.329191297977,34.99870838424613]}},{"type":"Feature","properties":{"resourceCoords":[1609.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3295730822519,34.99523763594769]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.33304631291051,34.99549764947322]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0720/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p720","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"29"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0720/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0720","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"135.2,1188.0 131.3,138.3 908.1,139.2 911.4,192.6 1637.0,182.4 1637.0,1725.4 1637.0,1726.8 990.8,1505.2 53.8,1551.1 135.2,1188.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0720/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[428.0,1892.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3291461,34.9953302]}},{"type":"Feature","properties":{"resourceCoords":[598.0,1368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3286725,34.996254]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0721/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p721","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0721/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0721","type":"ImageService3","width":1609,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1524.8 0.0,0.0 1609.0,0.0 1609.0,1011.2 1482.2,988.6 1372.0,1395.2 1609.0,1454.9 1609.0,1907.5 0.0,1524.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0721/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[837.0,855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3313283,34.9946706]}},{"type":"Feature","properties":{"resourceCoords":[837.0,1708.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3294485,34.9945843]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0722/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p722","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"17"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0722/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0722","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1742.5 0.0,158.2 1637.0,553.2 1637.0,1045.3 1393.4,1696.5 1637.0,1703.7 1637.0,1949.0 253.4,1949.0 292.4,1781.1 0.0,1742.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0722/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[822.0,1372.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3272127,34.9944643]}},{"type":"Feature","properties":{"resourceCoords":[119.0,171.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.329904,34.9933248]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0723/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p723","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0723/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0723","type":"ImageService3","width":1605,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"272.2,1721.6 271.3,1613.0 -0.0,1623.9 -0.0,370.8 1430.5,320.1 1427.8,1552.8 1088.6,1540.5 1095.3,1689.6 272.2,1721.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0723/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.33308452989128,34.993900140690535]}},{"type":"Feature","properties":{"resourceCoords":[1605.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3296151996629,34.9936389016809]}},{"type":"Feature","properties":{"resourceCoords":[1605.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32999971548469,34.99016319547754]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.33346904571307,34.990424434487174]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0724/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p724","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0724/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0724","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,339.3 1622.8,260.6 1350.1,1648.6 331.6,1690.2 327.5,1545.4 -0.0,1561.2 -0.0,339.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0724/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32998625107449,34.993706875256365]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3264171257517,34.99343147975993]}},{"type":"Feature","properties":{"resourceCoords":[1637.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32681455367337,34.98992568429131]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.33038367899616,34.990201079787745]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0725/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p725","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"13"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0725/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0725","type":"ImageService3","width":1605,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"158.3,1743.2 152.5,1008.4 0.0,984.5 0.0,0.0 1605.0,0.0 1605.0,952.6 1496.5,949.3 1495.4,1766.7 158.3,1743.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0725/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[160.0,1416.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3319658,34.9883511]}},{"type":"Feature","properties":{"resourceCoords":[949.0,936.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.332926,34.9898071]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0726/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p726","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"17"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0726/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0726","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"172.0,1100.3 183.2,143.4 1637.0,174.5 1637.0,836.1 1491.4,833.3 1483.8,1850.1 109.7,1576.5 0.0,1402.1 0.0,1227.5 170.5,1226.2 172.0,1100.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0726/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1265.0,174.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3310752,34.990258]}},{"type":"Feature","properties":{"resourceCoords":[1516.0,174.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3310502,34.9907087]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0727/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p727","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0727/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0727","type":"ImageService3","width":1605,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1605.0,162.3 1605.0,1949.0 -0.0,1949.0 -0.0,315.9 852.0,317.5 875.9,166.7 1605.0,162.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0727/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1279.0,160.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3319658,34.9883511]}},{"type":"Feature","properties":{"resourceCoords":[1326.0,1029.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.331957,34.986775]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0728/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p728","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0728/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0728","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"539.5,134.0 1641.0,155.3 1641.0,1949.0 521.0,1949.0 539.5,134.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0728/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[246.0,1019.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.331957,34.986775]}},{"type":"Feature","properties":{"resourceCoords":[1136.0,1019.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3300362,34.9867156]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0729__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p729 [1]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2713.6"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0729__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0729","type":"ImageService3","width":1605,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"676.5,0.0 0.0,0.0 0.0,1949.0 678.4,1949.0 676.5,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0729__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[311.2,1386.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3263603,34.9943938]}},{"type":"Feature","properties":{"resourceCoords":[202.1,523.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3264832,34.9975292]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0729__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p729 [2]","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"10"},{"label":"split_canvas_x","value":"2706.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3714.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0729__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0729","type":"ImageService3","width":1605,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1605.0,0.0 732.1,0.0 746.0,230.2 678.4,1903.1 678.4,1948.9 1132.5,1925.2 1137.5,1886.3 1415.4,1949.0 1573.7,1923.5 1605.0,1899.8 1605.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0729__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[747.5,1133.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3276818,34.9895932]}},{"type":"Feature","properties":{"resourceCoords":[747.5,613.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3270574,34.9913692]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0730/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p730","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0730/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0730","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1641.0,0.0 1641.0,1949.0 -0.0,1949.0 -0.0,1911.0 276.6,1935.6 426.5,1890.7 453.8,1863.9 218.4,37.5 -0.0,66.5 0.0,-0.0 1641.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0730/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3235626511676,34.99306853198453]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.31686203624085,34.99066252253065]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32032558854415,34.984096584859834]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32702620347091,34.98650259431371]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0731/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p731","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0731/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0731","type":"ImageService3","width":1605,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"186.0,1860.2 175.6,1460.5 0.0,1459.9 0.0,325.9 150.2,483.2 147.9,396.0 518.9,375.1 911.8,0.0 1562.9,0.0 1602.3,1832.9 186.0,1860.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0731/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[816.0,1848.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3179536,35.0082343]}},{"type":"Feature","properties":{"resourceCoords":[1576.0,350.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3202517,35.0106591]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0732__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p732 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5447.6"},{"label":"split_canvas_w","value":"6564.0"},{"label":"split_canvas_h","value":"2348.4"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0732__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0732","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"184.0,1466.8 187.7,1853.1 1168.5,1849.2 1167.5,1808.0 1438.8,1809.6 1439.5,1844.7 1641.0,1848.3 1641.0,1643.5 1438.4,1640.8 1419.0,1465.3 1641.0,1464.8 1641.0,1361.9 986.4,1367.2 984.3,1466.9 184.0,1466.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0732__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[184.0,1466.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3172336,35.0095452]}},{"type":"Feature","properties":{"resourceCoords":[784.0,1466.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3147628,35.0086115]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0733/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p733","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"19"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0733/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0733","type":"ImageService3","width":1605,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"396.5,86.6 1443.6,73.1 1454.8,1829.2 488.5,1842.9 487.0,1782.2 24.4,1792.5 27.9,1949.0 -0.0,1949.0 -0.0,748.2 412.0,736.0 396.5,86.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0733/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[481.0,1550.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.319152,35.0058279]}},{"type":"Feature","properties":{"resourceCoords":[412.0,736.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3185284,35.0071832]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0734/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p734","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0734/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0734","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1002.7,1827.4 -0.0,1836.5 -0.0,99.4 996.4,85.7 993.6,0.0 1556.0,0.0 1562.8,627.5 1646.0,738.5 1555.1,774.2 1584.5,1949.0 1000.1,1949.0 1002.7,1827.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0734/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[474.0,777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3155849,35.0059967]}},{"type":"Feature","properties":{"resourceCoords":[1576.0,1446.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3140227,35.0040725]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0735/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p735","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"13"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0735/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0735","type":"ImageService3","width":1601,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1586.0,70.9 1584.9,1595.5 1452.2,1949.0 -0.0,1949.0 -0.0,0.0 453.8,0.0 454.0,59.6 1586.0,70.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0735/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[452.0,637.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3199369,35.0044031]}},{"type":"Feature","properties":{"resourceCoords":[1228.0,64.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.317856,35.0047725]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0736/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p736","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0736/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0736","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1507.0,0.0 1646.0,0.0 1646.0,1695.6 363.8,1689.8 145.7,1604.0 144.1,103.5 941.6,105.3 937.3,223.9 1507.6,232.1 1507.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0736/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[628.0,1697.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3176237,35.0014632]}},{"type":"Feature","properties":{"resourceCoords":[1508.0,378.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3146074,35.0030053]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0737/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p737","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0737/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0737","type":"ImageService3","width":1601,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1394.0,1637.8 282.4,1653.2 278.7,1418.7 431.9,1414.7 424.6,0.0 1229.5,0.0 1379.0,187.7 1380.4,88.0 1601.0,90.3 1601.0,1949.0 1404.9,1949.0 1394.0,1637.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0737/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.31510184840148,35.003350133559024]}},{"type":"Feature","properties":{"resourceCoords":[1601.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.31191009847325,35.00213569701384]}},{"type":"Feature","properties":{"resourceCoords":[1601.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.31370228493536,34.998930449980115]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3168940348636,35.0001448865253]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0738/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p738","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0738/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0738","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1400.0,1203.0 1223.8,1203.0 1231.8,1949.0 -0.0,1949.0 -0.0,1561.0 426.5,1559.6 425.3,1203.0 282.0,1203.0 287.4,0.0 1392.0,0.0 1400.0,1203.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0738/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[282.0,1203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3171663,34.9984293]}},{"type":"Feature","properties":{"resourceCoords":[1400.0,1203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3149032,34.9975994]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0739/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p739","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0739/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0739","type":"ImageService3","width":1601,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1337.5,280.4 1353.1,938.5 1538.9,1025.2 1601.0,1101.3 1601.0,1949.0 -0.0,1949.0 -0.0,276.9 1350.0,244.2 1337.5,280.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0739/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32155658247241,35.00294833537757]}},{"type":"Feature","properties":{"resourceCoords":[1601.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3183833609712,35.00170305764843]}},{"type":"Feature","properties":{"resourceCoords":[1601.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.32022105182479,34.998516401749576]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.323394273326,34.999761679478716]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0740/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p740","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0740/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0740","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1095.2 -0.0,439.8 146.8,54.4 366.5,142.4 1509.3,158.1 1498.0,1592.5 1641.0,1593.0 1641.0,1949.0 225.3,1949.0 241.4,1264.1 181.7,1186.7 -0.0,1095.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0740/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1512.0,837.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.316457,34.999675]}},{"type":"Feature","properties":{"resourceCoords":[935.0,154.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3170131,35.0012363]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0741__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p741 [1]","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"47"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6436.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0741__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0741","type":"ImageService3","width":1609,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"658.1,1897.2 1519.4,1852.8 1609.0,1710.5 1609.0,0.0 612.7,0.0 622.5,499.5 15.1,509.4 114.2,1644.3 184.4,1797.6 658.1,1897.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0741__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[114.0,1513.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3140227,35.0040725]}},{"type":"Feature","properties":{"resourceCoords":[1257.0,1851.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3100264,35.0012581]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0741__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p741 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2490.0"},{"label":"split_canvas_h","value":"2038.4"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0741__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0741","type":"ImageService3","width":1609,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 0.0,509.6 622.5,499.5 612.7,0.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0741__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":[-85.31889322929139,34.992946622873966]}},{"type":"Feature","properties":{"resourceCoords":[622.5,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.31765849047515,34.99246252713388]}},{"type":"Feature","properties":{"resourceCoords":[622.5,509.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.31814294465356,34.99163569391793]}},{"type":"Feature","properties":{"resourceCoords":[0.0,509.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3193776834698,34.99211978965801]}},{"type":"Feature","properties":{"resourceCoords":[607.5,493.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.318157,34.9916741]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0742/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p742","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0742/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0742","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"190.6,1056.1 208.2,128.9 958.0,141.0 960.4,0.0 1641.0,0.0 1641.0,1949.0 -0.0,1949.0 -0.0,1500.0 88.3,1501.0 93.2,1053.7 190.6,1056.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0742/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[89.0,786.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3136375,34.9999753]}},{"type":"Feature","properties":{"resourceCoords":[958.0,141.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3089716,35.0008623]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0743__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p743 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2891.2"},{"label":"split_canvas_w","value":"6436.0"},{"label":"split_canvas_h","value":"2495.6"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0743__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0743","type":"ImageService3","width":1609,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1609.0,1345.2 1609.0,722.8 0.0,723.1 0.0,1059.7 383.1,1060.8 382.3,1346.7 846.3,1346.1 1609.0,1345.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0743__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[584.0,809.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3345586,34.9856589]}},{"type":"Feature","properties":{"resourceCoords":[808.0,809.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3335658,34.985603]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0744__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p744 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6564.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0744__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0744","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1123.4,1634.1 1280.8,1554.1 1321.9,1725.7 1377.9,1850.4 1347.9,1949.0 1641.0,1949.0 1641.0,794.8 1345.9,796.6 1337.1,527.8 1641.0,524.4 1641.0,0.0 0.0,0.0 -0.0,1520.1 768.5,1464.8 794.5,1894.7 883.9,1814.4 1063.7,1907.8 1096.4,1623.4 1123.4,1634.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0744__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[517.0,833.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3461119,35.0076008]}},{"type":"Feature","properties":{"resourceCoords":[1061.0,1962.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3449051,35.0032557]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0745/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p745","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0745/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0745","type":"ImageService3","width":1609,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"198.0,1608.7 61.9,1593.1 -0.0,1641.0 0.0,-0.0 1609.0,0.0 1601.5,549.8 1496.9,601.0 1295.1,660.6 1293.1,804.0 1609.0,976.5 1609.0,1405.4 1555.7,1468.5 1553.8,1594.2 1249.0,1654.9 1126.4,1741.0 952.1,1949.0 371.6,1949.0 401.4,1800.0 350.0,1808.0 276.9,1738.1 227.5,1633.6 202.5,1628.0 198.0,1608.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0745/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3526427386668,35.00609953599389]}},{"type":"Feature","properties":{"resourceCoords":[1609.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.34566041685,35.00521083537035]}},{"type":"Feature","properties":{"resourceCoords":[1609.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.34696538338552,34.99823385402493]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.35394770520233,34.99912255464847]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0746/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p746","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0746/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0746","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1641.0,1949.0 793.1,1949.0 -0.0,1693.7 -0.0,652.9 630.7,152.9 820.4,94.3 1138.8,508.6 1158.8,509.8 1189.6,0.0 1641.0,0.0 1641.0,1161.8 1641.0,1161.8 1641.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0746/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3469967372332,35.0053086855903]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.34002784350987,35.00433912095351]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3414237924512,34.99751137126788]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.34839268617452,34.998480935904674]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0747/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p747","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"22"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0747/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0747","type":"ImageService3","width":1609,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 0.0,-0.0 40.2,0.0 44.1,52.4 101.4,0.0 231.0,0.0 270.1,28.6 327.0,129.8 405.1,194.5 455.6,182.9 437.1,334.3 1015.1,292.5 1173.2,71.4 1258.9,0.0 1600.5,0.0 1512.2,302.9 1438.8,801.4 1485.4,941.1 1433.4,1180.5 1420.0,1483.0 1518.2,1876.7 1586.9,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0747/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[884.0,1483.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3515524,34.9945217]}},{"type":"Feature","properties":{"resourceCoords":[1420.0,1483.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.3492561,34.9940884]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0748/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Chattanooga, Tennessee | 1950 | sanborn08291_013 p748","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T11:14:03Z","modified":"2026-09-21T11:14:03Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0748/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0748","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"238.4,1922.1 156.8,1588.4 146.0,1469.5 162.2,1221.0 218.1,980.8 172.9,839.7 254.0,339.1 337.6,82.9 345.6,0.0 657.9,0.0 784.0,78.5 830.5,136.6 863.4,248.1 1561.9,215.1 1575.8,0.0 1641.0,0.0 1641.0,1949.0 263.5,1949.0 238.4,1922.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd396m:g3964m:g3964cm:g3964cm_g08291195004:08291_04_1950-0748/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.34846051927657,34.999538910852856]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3414949479491,34.998288714264426]}},{"type":"Feature","properties":{"resourceCoords":[1641.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.34329481138363,34.99146372432886]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.3502603827111,34.99271392091729]}}]}}]}