{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00046_010.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Gadsden, Alabama | 1951 | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"72"},{"label":"placed","value":"59"},{"label":"unplaced","value":"13"},{"label":"fit sources","value":"georef-snap 32, georef 26, streets-candidate 1, snap:0 1, snap:1 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 8 panels"},{"label":"unplaced pages","value":"p0a (tier 4, 34.01455,-86.01236 +/-4662m); p0b (tier 4, 34.01455,-86.01236 +/-4662m); p208__1 (tier 1, 34.01384,-86.05367 +/-119m); p208__2 (tier 2, 34.01582,-86.05075 +/-328m); p209 (tier 2, 34.01468,-86.04337 +/-125m); p20__2 (tier 2, 34.00348,-86.00814 +/-278m); p210 (tier 2, 34.01149,-86.01455 +/-4414m); p34 (tier 2, 34.00768,-85.98516 +/-2397m); p39 (tier 1, 34.00303,-85.98770 +/-519m); p3__2 (tier 2, 34.00839,-85.99083 +/-2163m); p43__2 (tier 2, 34.00015,-85.97556 +/-336m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p1","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0001","type":"ImageService3","width":1653,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"249.7,1062.0 -0.0,1063.5 -0.0,334.4 504.8,257.4 1204.3,0.0 1653.0,0.0 1653.0,1054.5 1396.0,1054.0 1385.6,1901.2 239.7,1902.9 249.7,1062.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[745.0,1054.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0063722,34.0143806]}},{"type":"Feature","properties":{"resourceCoords":[1396.0,1054.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0056601,34.0154166]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0010","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1570.6 438.2,1368.5 274.8,744.9 -0.0,299.2 -0.0,0.0 1098.2,0.0 1098.2,49.7 1652.0,52.7 1652.0,516.5 1452.8,518.8 1464.4,1687.6 1223.3,1690.3 669.4,1949.0 69.1,1949.0 -0.0,1699.9 -0.0,1570.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01940815666522,34.02079954115501]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01611184039398,34.01951596205491]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0179260677912,34.01626985093423]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.02122238406244,34.017553430034326]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p11","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"23"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0011","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"313.8,623.1 1210.0,808.3 1227.1,909.2 1178.2,1229.0 920.3,1234.8 894.3,1422.5 1133.3,1526.9 1130.4,1543.5 1473.5,1534.0 1584.2,1580.9 1559.5,1797.3 455.5,1810.0 443.0,823.0 282.8,825.0 313.8,623.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[562.0,713.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0224654,34.0201297]}},{"type":"Feature","properties":{"resourceCoords":[1093.0,1804.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0202546,34.0160834]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0012","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"28.3,415.3 737.0,181.7 1320.7,176.7 1321.7,276.2 1553.3,276.6 1555.2,0.0 1596.5,0.0 1598.0,733.1 1632.7,1138.7 1298.0,1197.8 1355.2,1521.9 1070.8,1590.3 1074.3,1667.6 650.7,1782.5 28.3,415.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.02015284539259,34.01467318427403]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01708319656461,34.02018643570686]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00929094441247,34.01716344307857]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01236059324044,34.01165019164574]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0013","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1378.9,1789.3 1376.7,1949.0 863.1,1949.0 864.6,1758.1 -0.0,1705.6 -0.0,1331.3 241.5,109.3 1470.0,233.6 1456.8,1794.0 1378.9,1789.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01770503335104,34.01694503135648]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01775060813883,34.01090574732965]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0263172571396,34.01095079404752]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0262716823518,34.01699007807434]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p14","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"23"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0014","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,1641.0 78.8,1644.6 70.5,77.5 696.6,141.6 1077.1,208.7 1242.2,252.6 1652.0,423.3 1652.0,793.8 1635.2,836.0 1652.0,837.8 1652.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[923.0,470.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0205669,34.0084932]}},{"type":"Feature","properties":{"resourceCoords":[377.0,1336.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0243067,34.0105372]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0015","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1045.8,1698.0 1053.4,1949.0 140.7,1949.0 151.3,1654.4 101.8,344.2 1585.2,128.2 1563.7,852.0 1297.9,887.2 1310.0,1679.8 1045.8,1698.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0015/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01865328939263,34.01543529032314]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01146552049866,34.01451310619321]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01277358792808,34.007408408005695]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01996135682205,34.00833059213562]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0016","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"138.7,1806.4 137.1,1007.1 405.4,975.2 436.7,245.8 1198.6,148.0 1179.7,205.7 1521.1,340.4 1411.7,635.0 1364.6,1159.5 1352.5,1531.9 1282.9,1548.7 1279.7,1657.9 1140.3,1657.7 1054.3,1706.3 866.0,1764.6 138.7,1806.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01356264967649,34.015192262558315]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00639364655352,34.01435282790604]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00758001151898,34.00729240131508]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01474901464195,34.008131835967355]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p17","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"21"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0017","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,1022.5 100.5,1050.2 106.8,1027.7 414.2,993.8 539.6,565.5 573.2,300.6 1499.2,322.4 1503.8,871.2 1583.8,1200.7 1401.5,1248.0 1398.6,1537.6 1468.6,1764.8 1618.7,1864.0 1646.0,1864.4 1646.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[641.0,1205.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0195637,34.0049845]}},{"type":"Feature","properties":{"resourceCoords":[1231.0,71.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0163776,34.0087659]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0018","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"87.9,1868.3 59.8,1829.1 -0.0,1639.7 -0.0,1340.3 181.6,1291.3 98.5,965.3 83.7,166.4 1054.9,109.6 1165.7,87.5 1358.5,0.0 1577.5,0.0 1530.1,1949.0 223.1,1949.0 87.9,1868.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0018/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01548511453974,34.00930203820356]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00835658416575,34.00845774996729]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0095497262482,34.00143669826426]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01667825662219,34.00228098650052]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0019","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"942.9,72.8 941.0,0.0 1053.8,0.0 1073.1,70.8 1635.1,78.9 1523.5,384.8 1646.0,434.9 1386.7,1106.0 1216.2,1067.8 1124.3,1320.0 1032.7,1287.2 796.0,1949.0 0.0,1949.0 0.0,1004.4 202.5,994.5 181.2,566.9 295.2,534.7 172.8,82.0 942.9,72.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0019/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0096903,34.0052477]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0085155,34.0109996]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0002995,34.0098465]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0014743,34.0040946]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p2","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0002","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1377.9,1685.9 725.5,1681.4 724.3,1949.0 226.4,1949.0 247.3,272.0 1394.4,277.1 1377.9,1685.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[237.0,1129.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0036573,34.0120222]}},{"type":"Feature","properties":{"resourceCoords":[237.0,1678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0026008,34.0115302]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0201/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p201","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0201/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0201","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"65.0,299.7 -0.0,299.7 -0.0,233.1 1650.0,265.6 1608.7,1949.0 30.3,1949.0 65.0,299.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0201/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0474249060449,34.02307906077747]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04385154294576,34.023231007093855]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04363651272561,34.01970791809295]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04720987582475,34.01955597177656]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0202/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p202","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"11"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0202/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0202","type":"ImageService3","width":1654,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1356.9,1579.0 1654.0,1577.2 1654.0,1949.0 -0.0,1949.0 -0.0,795.9 265.0,797.0 245.3,404.5 1022.8,349.5 1002.4,0.0 1654.0,0.0 1654.0,256.6 1443.6,270.3 1471.5,797.0 1356.9,1579.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0202/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[265.0,797.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0470913,34.018129]}},{"type":"Feature","properties":{"resourceCoords":[1472.0,797.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0417936,34.018044]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0203/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p203","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"23"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0203/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0203","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"303.4,972.9 278.4,438.8 901.0,400.1 900.3,374.8 1370.5,224.3 1297.1,0.0 1650.0,0.0 1650.0,365.6 1430.8,367.2 1475.1,979.8 1342.7,1778.8 1204.9,1777.2 1203.7,1949.0 482.3,1949.0 483.4,1768.5 182.3,1764.8 303.4,972.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0203/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1091.0,390.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0383479,34.0201016]}},{"type":"Feature","properties":{"resourceCoords":[992.0,1772.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0388541,34.0151437]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0204/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p204","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"24"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0204/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0204","type":"ImageService3","width":1654,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,1599.8 136.6,1601.6 261.9,809.0 214.1,211.2 -0.0,223.1 -0.0,111.3 152.7,61.2 132.1,0.0 1654.0,0.0 1654.0,444.1 1456.8,445.7 1464.0,1628.7 1654.0,1629.5 1654.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0204/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[731.0,451.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0346341,34.019226]}},{"type":"Feature","properties":{"resourceCoords":[222.0,1068.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0369153,34.0170282]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0205/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p205","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0205/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0205","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"692.7,1696.2 791.5,1949.0 757.7,1949.0 672.3,1736.3 569.2,1768.6 619.6,1949.0 194.8,1949.0 199.8,996.3 132.2,821.7 266.6,802.4 238.6,340.6 346.3,370.6 517.3,-0.0 1414.5,-0.0 1370.2,1202.3 1208.7,1197.5 1198.4,1546.1 692.7,1696.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0205/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03074149676068,34.02596866977203]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03062227809377,34.01993128943096]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03916634034523,34.01981374983773]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03928555901214,34.0258511301788]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0206/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p206","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0206/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0206","type":"ImageService3","width":1654,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"444.6,236.6 757.9,326.0 758.8,139.2 866.5,136.5 890.2,363.8 910.6,369.6 897.0,103.6 1654.0,95.6 1654.0,690.1 1580.1,980.6 1338.2,902.1 1137.3,1521.1 695.8,1406.0 672.6,1388.8 681.4,1356.0 135.7,1213.2 444.6,236.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0206/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03883607604605,34.026593062887216]}},{"type":"Feature","properties":{"resourceCoords":[1654.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03672508344427,34.020783234901245]}},{"type":"Feature","properties":{"resourceCoords":[1654.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0449272317868,34.01870700694863]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04703822438859,34.0245168349346]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0207/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p207","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"17"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0207/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0207","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1650.0,364.2 1650.0,1484.9 1618.6,1949.0 116.6,1949.0 85.8,1937.3 81.6,792.8 107.9,791.3 109.3,317.1 104.2,82.7 1314.8,82.8 1300.6,346.9 1650.0,364.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0207/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[447.0,1056.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0514879,34.0211863]}},{"type":"Feature","properties":{"resourceCoords":[1125.0,498.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.048943,34.0187754]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0020__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p20 [1]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"11"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6608.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0020__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0020","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1381.9 -0.0,1949.0 1146.1,1949.0 1146.1,1600.6 1420.8,1600.6 1420.8,1949.0 1652.0,1949.0 1652.0,345.1 1008.4,335.7 1001.4,132.9 573.2,148.0 542.6,33.4 87.8,149.3 75.4,1381.1 -0.0,1381.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0020__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1066.0,873.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0055626,34.0027432]}},{"type":"Feature","properties":{"resourceCoords":[86.0,335.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0093499,34.0051529]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0021","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1102.6,326.7 1132.9,306.5 1054.8,0.0 1646.0,0.0 1646.0,1729.1 1241.8,1679.9 1231.5,1774.1 1100.2,1782.4 1080.0,1949.0 944.3,1949.0 713.0,1622.8 298.4,1553.5 310.8,682.5 1154.1,467.8 1102.6,326.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0021/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00743339698897,34.018083714828975]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00379612846717,34.023514664594536]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.99609185703825,34.019919791270844]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.99972912556005,34.01448884150528]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0211/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p211","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"24"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0211/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0211","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1536.4,1674.7 1538.0,1795.6 690.0,1795.3 691.5,1949.0 0.1,1949.0 -0.0,0.0 1650.0,-0.0 1650.0,1674.5 1536.4,1674.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0211/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1192.0,1341.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0571925,34.0125692]}},{"type":"Feature","properties":{"resourceCoords":[1192.0,685.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0543376,34.0124807]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0212/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p212","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"34"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0212/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0212","type":"ImageService3","width":1654,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,269.1 684.6,270.2 683.4,118.0 1522.9,119.7 1521.6,-0.0 1654.0,-0.0 1654.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0212/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[912.0,1474.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0650852,34.0137851]}},{"type":"Feature","properties":{"resourceCoords":[151.0,571.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0609956,34.0164407]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0213/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p213","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0213/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0213","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1650.0,0.0 1650.0,1229.8 1485.2,1232.1 1480.4,1841.8 339.1,1826.6 325.4,1949.0 -0.0,1949.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0213/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.05728573663316,34.02906912464753]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.05001154832857,34.02935380197497]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04960866085258,34.022182311237074]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.05688284915718,34.02189763390963]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0214/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p214","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0214/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0214","type":"ImageService3","width":1654,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"351.2,0.0 352.4,193.8 821.6,74.2 858.6,220.2 1092.8,218.7 1654.0,67.8 1654.0,644.5 1594.5,702.0 1579.5,1141.4 1654.0,1143.9 1654.0,1787.7 808.0,1782.9 808.4,1814.2 606.2,1816.8 132.6,1811.3 131.0,1174.6 296.1,1170.9 286.4,0.0 351.2,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0214/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.05126043347644,34.029090136357226]}},{"type":"Feature","properties":{"resourceCoords":[1654.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04397713829367,34.02932516228458]}},{"type":"Feature","properties":{"resourceCoords":[1654.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04364532162737,34.02216210937994]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.05092861681014,34.02192708345259]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0215/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p215","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0215/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0215","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"711.3,0.0 1650.0,0.0 1650.0,1848.2 1206.2,1852.8 1208.9,1949.0 31.5,1949.0 106.6,1869.5 99.3,1429.3 155.9,1368.7 134.2,939.5 762.6,903.9 711.3,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0215/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04448140770431,34.03199045403773]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03722054946118,34.03191789340979]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03732324360794,34.0247597715212]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04458410185107,34.02483233214914]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0216/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p216","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0216/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0216","type":"ImageService3","width":1654,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"487.8,21.8 1654.0,0.0 1654.0,1413.7 1469.2,1949.0 1012.2,1949.0 1001.5,1815.5 744.6,1883.9 325.2,1846.0 487.8,21.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0216/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03938819390302,34.03185960852182]}},{"type":"Feature","properties":{"resourceCoords":[1654.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03206409647748,34.03233074701973]}},{"type":"Feature","properties":{"resourceCoords":[1654.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03139891145631,34.02512775535237]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03872300888185,34.024656616854465]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0217/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p217","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0217/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0217","type":"ImageService3","width":1650,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1650.0,1201.5 1650.0,1438.0 1502.3,1474.5 1620.3,1949.0 -0.0,1949.0 -0.0,0.0 1650.0,-0.0 1650.0,634.8 1501.0,633.9 1650.0,1201.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0217/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04149529662354,34.0346403643801]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04117327430866,34.0286372048186]}},{"type":"Feature","properties":{"resourceCoords":[1650.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0496697914064,34.02831975088807]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.04999181372128,34.034322910449575]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p22","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0022","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"810.3,1889.2 695.0,1906.3 676.0,1788.8 792.2,1771.2 764.8,1592.0 38.5,1698.5 8.3,1510.8 9.6,1510.5 -0.0,820.4 289.3,534.2 266.3,397.6 475.0,389.8 672.5,230.2 783.2,378.2 1029.6,200.5 1051.6,367.9 1478.5,351.8 1608.5,1224.2 1652.0,1216.5 1652.0,1558.4 1508.8,1579.7 1566.2,1949.0 819.4,1949.0 810.3,1889.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[922.0,1873.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9991468,34.0122839]}},{"type":"Feature","properties":{"resourceCoords":[695.0,1906.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0000314,34.0127084]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p23","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0023","type":"ImageService3","width":1641,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"882.0,1764.8 435.7,1949.0 -0.0,1949.0 -0.0,0.0 1641.0,0.0 1641.0,1949.0 1587.9,1949.0 1626.0,1766.4 882.9,1606.0 882.0,1764.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[551.0,1544.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9915868,34.0232316]}},{"type":"Feature","properties":{"resourceCoords":[897.0,971.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9891268,34.0246456]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0024","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"723.3,1793.5 513.7,1949.0 124.1,1949.0 98.9,1813.8 -0.0,1815.1 -0.0,259.6 58.0,535.9 492.0,442.5 908.0,159.7 875.4,-0.0 1658.0,-0.0 1658.0,1949.0 1104.3,1949.0 1090.5,1776.9 830.1,1949.0 723.3,1793.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0024/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.99341011297325,34.024384572450636]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.98760756683747,34.020847914033105]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.99258832449915,34.0151545240553]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.99839087063494,34.01869118247283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p25","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0025","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"952.6,1678.6 175.2,1513.8 204.2,1335.5 153.0,961.1 78.8,855.8 33.4,170.7 191.3,141.8 556.4,162.9 787.8,202.0 1177.2,309.8 1544.6,425.6 1577.8,1198.7 1491.5,1746.5 952.6,1678.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0025/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01663631110809,34.02549453998954]}},{"type":"Feature","properties":{"resourceCoords":[1635.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00979137080104,34.02419055659713]}},{"type":"Feature","properties":{"resourceCoords":[1635.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01165366441394,34.0173800136516]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01849860472099,34.01868399704401]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p26","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0026","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1588.9,521.3 1614.0,800.5 1561.8,1322.1 1568.7,1379.7 1658.0,1370.4 1658.0,1779.0 1621.8,1791.7 1637.7,1949.0 721.9,1949.0 732.1,1911.1 443.7,1831.5 444.0,1801.6 323.7,1854.3 97.5,1795.6 233.7,1272.5 12.7,1213.6 100.3,1205.4 46.8,334.4 0.0,337.2 -0.0,0.0 348.3,0.0 337.1,124.3 886.5,190.9 1656.3,130.1 1617.6,271.1 1588.9,521.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0026/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.012952276715,34.01714716284075]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01111536374418,34.022901507206726]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00301148291099,34.02109912866204]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00484839588181,34.01534478429606]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0027","type":"ImageService3","width":1635,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1428.4,0.0 1279.5,159.7 1223.2,158.2 1188.1,16.0 1038.3,23.7 1364.8,1355.7 1454.0,1338.0 1519.5,1618.0 1635.0,1585.8 1635.0,1949.0 1553.8,1949.0 1530.0,1672.7 1091.8,1704.0 1091.8,1704.0 857.0,1720.7 753.9,1794.2 386.4,1846.3 194.4,1816.7 300.0,1314.2 152.5,1283.3 0.0,1338.2 0.0,410.8 466.2,387.9 481.8,0.0 1428.4,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0027/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.02530025120635,34.02082442306553]}},{"type":"Feature","properties":{"resourceCoords":[1635.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.02367468809291,34.02663285369007]}},{"type":"Feature","properties":{"resourceCoords":[1635.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01537916136228,34.02501549316306]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01700472447571,34.01920706253852]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p28","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"18"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0028","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1509.6,1779.4 1509.3,1582.7 1144.6,1819.7 946.8,1861.8 774.4,1949.0 -0.0,1949.0 -0.0,-0.0 1576.3,-0.0 1572.5,89.6 1658.0,103.8 1658.0,1807.6 1509.6,1779.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1177.0,654.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0191465,34.0262823]}},{"type":"Feature","properties":{"resourceCoords":[1353.0,960.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0204781,34.0256323]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p29","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0029","type":"ImageService3","width":1644,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"363.1,0.0 1644.0,0.0 1644.0,432.6 1479.9,476.8 1504.0,513.5 1605.6,556.0 1612.6,579.6 1424.0,1914.4 1067.5,1737.6 851.0,1656.7 717.9,1613.1 620.2,1597.0 636.0,1517.2 429.7,1476.3 363.1,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0029/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0179262620463,34.030613144861015]}},{"type":"Feature","properties":{"resourceCoords":[1644.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01076098178294,34.03040985201045]}},{"type":"Feature","properties":{"resourceCoords":[1644.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01104974524159,34.02332006636883]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01821502550496,34.023523359219396]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p30","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0030","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"574.9,1712.7 87.1,1522.1 110.4,174.2 100.5,151.6 -0.0,123.5 -0.0,79.5 91.9,46.0 141.4,0.0 1658.0,0.0 1658.0,1877.2 1094.2,1770.1 817.5,1766.2 574.9,1712.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0030/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01134023695748,34.028994261454066]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00419948595658,34.028050035457724]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00552933815445,34.02104401996989]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01267008915535,34.021988245966234]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p31","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0031","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1058.8,1768.0 160.9,1795.3 323.3,1391.5 560.6,457.6 492.6,456.6 492.9,430.8 563.5,446.3 661.5,71.4 1496.4,218.8 1499.2,1752.5 1058.9,1749.5 1058.8,1768.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0031/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.02283264946131,34.024572793381985]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.02293294200173,34.01855648844572]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03146767303976,34.018655611037616]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03136738049933,34.02467191597388]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p32","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0032","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"180.8,1949.0 176.8,199.8 -0.0,163.3 -0.0,0.0 1006.4,-0.0 1006.3,116.5 1548.9,115.9 1551.2,536.2 1658.0,541.8 1658.0,1759.0 1376.7,1757.2 1374.7,1949.0 180.8,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1009.0,496.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0252174,34.0161414]}},{"type":"Feature","properties":{"resourceCoords":[429.0,117.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.023539,34.0182045]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0033","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"164.1,0.0 1646.0,0.0 1646.0,1383.8 1394.9,1452.4 1303.9,1544.0 1074.6,1673.7 975.4,1785.8 102.7,1808.4 96.9,1783.3 30.6,1798.7 37.6,834.6 164.1,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0033/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03252243620027,34.024099336902275]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.03070186171225,34.02991805139168]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.02244698583769,34.02811881192168]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.02426756032571,34.02230009743227]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p35","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0035","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1646.0,0.0 1646.0,915.2 1282.9,919.4 1279.2,1513.6 1125.2,1478.0 1116.9,1778.3 1055.7,1778.4 1016.2,1949.0 -0.0,1949.0 0.0,-0.0 1646.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0035/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.99988115503001,34.00655513595181]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.99628863966684,34.01178167815521]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.98887543481389,34.00823051103672]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.99246795017706,34.00300396883332]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p36","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0036","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"359.2,0.0 702.1,44.9 700.5,0.0 1594.0,0.0 1582.3,112.9 1658.0,120.8 1658.0,1949.0 765.4,1949.0 745.0,1534.0 344.7,1441.8 319.6,1839.0 271.8,1949.0 -0.0,1949.0 -0.0,770.7 364.0,764.2 359.2,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0036/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.99649714258896,34.01036932870486]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.99284865747285,34.015600759942366]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.98548188473656,34.012020533845885]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.98913036985267,34.00678910260838]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p37","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0037","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"297.6,1888.8 -0.0,1949.0 -0.0,1789.2 572.9,1660.5 512.8,1393.1 394.0,1370.4 -0.0,1433.3 -0.0,1019.5 403.7,907.6 206.4,29.8 -0.0,76.2 -0.0,0.0 1646.0,-0.0 1646.0,1949.0 311.6,1949.0 297.6,1888.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0037/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.98605027237026,34.01260808393321]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.98081703653563,34.00855179683916]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.98657042367876,34.00337883338471]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.9918036595134,34.00743512047876]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p38","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0038","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"282.3,1949.0 282.4,122.8 -0.0,122.8 -0.0,-0.0 555.4,-0.0 1550.7,1294.2 1071.9,1820.7 930.0,1949.0 282.3,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0038/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.98135135024478,34.00957209432949]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.97608837068057,34.00549295329317]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.981832093495,34.000328057571416]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.98709507305921,34.00440719860774]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p3 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6612.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0003","type":"ImageService3","width":1653,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"753.2,160.2 754.8,432.8 257.4,437.9 250.3,1335.2 344.6,1333.7 351.3,1949.0 1157.8,1949.0 1286.3,1096.9 1409.6,1096.7 1410.2,859.0 1653.0,856.6 1653.0,160.7 753.2,160.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[763.0,1327.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9998505,34.0112701]}},{"type":"Feature","properties":{"resourceCoords":[1409.0,1327.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9991468,34.0122839]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0004","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"257.3,965.5 -0.0,962.1 -0.0,327.3 752.6,121.7 1562.3,121.4 1549.0,1602.0 233.3,1595.2 257.3,965.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00881419551328,34.01120940285969]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.0070388600943,34.01382911020127]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.003325196265,34.0120753626123]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00510053168398,34.00945565527072]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p40","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"29"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0040","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 1658.0,11.7 1658.0,84.3 1589.6,310.5 1213.3,198.3 1368.9,1289.2 1500.0,1330.0 1509.5,590.9 1547.3,439.9 1658.0,475.8 1658.0,1860.8 1502.5,1858.9 1506.0,1949.0 1343.1,1949.0 1052.9,1716.4 733.7,1949.0 -0.0,1949.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0040/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[639.0,957.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9855044,33.9967536]}},{"type":"Feature","properties":{"resourceCoords":[1053.0,1716.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9820654,33.9955383]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p41","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"13"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0041","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,368.6 -0.0,-0.0 622.5,0.0 1483.8,61.9 1582.7,1107.3 1608.2,1548.2 1584.8,1595.9 1529.6,1636.2 921.1,1949.0 736.7,1949.0 590.8,1949.0 -0.0,1467.0 -0.0,368.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[418.0,1324.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.98134,33.9988839]}},{"type":"Feature","properties":{"resourceCoords":[917.0,532.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9823386,34.002149]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p42","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0042","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"438.4,236.3 689.9,510.0 846.6,535.3 856.7,446.6 1008.6,473.0 1072.4,59.6 1175.3,75.2 1163.3,164.7 1393.2,358.4 1658.0,363.4 1658.0,822.7 1450.0,819.2 1439.0,1949.0 -0.0,1949.0 -0.0,398.6 91.0,413.4 438.4,236.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0042/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.98411501875175,33.99494954192329]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.97922312172768,33.99937800647331]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.97298827315562,33.99457670258436]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.97788017017969,33.990148238034344]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0043__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p43 [1]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"15"},{"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":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0043__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0043","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"809.6,1802.9 1348.2,1310.8 1327.7,1283.8 1417.2,951.2 1232.7,712.3 1368.8,186.4 334.2,187.9 319.6,589.9 297.4,672.5 220.8,786.9 90.0,900.3 388.7,1238.2 341.6,1279.3 809.6,1802.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0043__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[671.0,1216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9766383,33.998826]}},{"type":"Feature","properties":{"resourceCoords":[1244.0,667.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9743415,34.0010221]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p44","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"20"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0044","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 207.4,0.0 209.9,250.2 140.9,230.5 173.7,251.4 945.2,234.9 947.6,200.8 1249.5,0.0 1274.5,0.0 1562.7,310.0 1658.0,222.4 1658.0,1949.0 -0.0,1949.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1563.0,310.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9715231,34.0001506]}},{"type":"Feature","properties":{"resourceCoords":[846.0,1148.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-85.9710159,33.9961689]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p45","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0045","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1646.0,603.5 1610.2,651.7 1584.3,736.6 1518.9,1637.5 -0.0,1911.5 -0.0,-0.0 1646.0,0.0 1646.0,603.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0045/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.97947026770062,34.009268037760066]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.97231124753459,34.0087125985473]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.97309905210514,34.00163581939094]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.98025807227117,34.00219125860371]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p46","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0046/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0046","type":"ImageService3","width":1653,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"188.6,1088.5 295.9,1088.2 410.5,282.6 461.1,105.3 500.7,59.6 505.1,0.0 1207.5,0.0 1217.3,527.4 1275.7,617.2 1207.1,619.5 1221.4,743.4 1307.4,937.0 1343.8,1068.6 1424.8,1565.5 1474.5,1564.2 1483.7,1635.0 1653.0,1631.8 1653.0,1949.0 1063.1,1949.0 770.5,1683.7 770.9,1813.5 330.0,1817.5 323.8,1851.2 110.3,1631.9 188.6,1088.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0046/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.97472268472848,34.00677077670085]}},{"type":"Feature","properties":{"resourceCoords":[1653.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.96755101257969,34.0066605076838]}},{"type":"Feature","properties":{"resourceCoords":[1653.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.9677067456572,33.999601054929265]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.97487841780598,33.999711323946315]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p47","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0047/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0047","type":"ImageService3","width":1646,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1575.1,1711.5 1575.5,1761.2 1131.0,1820.4 945.4,1866.7 750.3,1949.0 624.5,1949.0 625.2,1892.4 534.5,1949.0 -0.0,1949.0 -0.0,0.0 1646.0,-0.0 1646.0,1703.6 1575.1,1711.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0047/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.96102044305604,34.00671912130163]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.96101818366971,34.000751774262284]}},{"type":"Feature","properties":{"resourceCoords":[1646.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.96948177254642,34.00074954078649]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.96948403193275,34.00671688782583]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p5","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0005","type":"ImageService3","width":1648,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,296.8 1484.2,308.9 1505.7,1949.0 820.0,1949.0 776.4,1613.1 -0.0,1610.1 -0.0,296.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[228.0,1619.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0050959,34.009925]}},{"type":"Feature","properties":{"resourceCoords":[228.0,299.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0036573,34.0120222]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p6","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0006","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"617.0,95.0 616.5,-0.0 1647.0,-0.0 1647.0,1949.0 -0.0,1949.0 -0.0,1756.9 168.1,1757.9 155.8,89.9 617.0,95.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[617.0,573.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0009005,34.0097089]}},{"type":"Feature","properties":{"resourceCoords":[617.0,95.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0003934,34.0104581]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p7","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0007","type":"ImageService3","width":1648,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"848.9,105.0 992.2,0.0 1648.0,0.0 1648.0,1861.0 1249.8,1802.8 136.0,1815.0 136.0,114.0 848.9,105.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[136.0,1815.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0024048,34.0138465]}},{"type":"Feature","properties":{"resourceCoords":[136.0,114.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.0056601,34.0154166]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0008","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"727.6,367.8 726.6,604.7 176.7,606.1 172.7,-0.0 1652.0,-0.0 1652.0,363.9 727.6,367.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00207417394124,34.01497624146519]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-85.9989167437678,34.01345591413962]}},{"type":"Feature","properties":{"resourceCoords":[1652.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00106542264264,34.0103463255463]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00422285281608,34.01186665287187]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gadsden, Alabama | 1951 | sanborn00046_010 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T17:08:24Z","modified":"2026-09-23T17:08:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0009","type":"ImageService3","width":1648,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"926.8,155.3 956.8,0.0 1648.0,0.0 1648.0,1740.6 713.8,1770.7 320.9,1714.1 30.3,181.2 926.8,155.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974gm:g3974gm_g000461951:00046_1951-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01221332111804,34.01409110092553]}},{"type":"Feature","properties":{"resourceCoords":[1648.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.01151024555695,34.017000410256]}},{"type":"Feature","properties":{"resourceCoords":[1648.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00738837476077,34.01630633463375]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.00809145032186,34.01339702530328]}}]}}]}