{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00014_008.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Bessemer, Alabama | 1924 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"43"},{"label":"placed","value":"29"},{"label":"unplaced","value":"14"},{"label":"fit sources","value":"georef-snap 14, georef 14, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p1 (tier 3, 33.39306,-86.95769 +/-1419m); p10 (tier 1, 33.39878,-86.95502 +/-527m); p14 (tier 2, 33.40957,-86.95201 +/-2903m); p16 (tier 1, 33.40578,-86.95913 +/-266m); p22__1 (tier 1, 33.38623,-86.95361 +/-330m); p28__2 (tier 2, 33.41152,-86.92850 +/-107m); p30__2 (tier 1, 33.40387,-86.97237 +/-358m); p31 (tier 1, 33.41108,-86.97528 +/-522m); p38__1 (tier 2, 33.41187,-86.95184 +/-515m); p38__2 (tier 2, 33.41187,-86.95184 +/-515m); p4 (tier 1, 33.40506,-86.95782 +/-266m); p5 (tier 1, 33.40768,-86.96249 +/-262m); p6 (tier 1, 33.40802,-86.96305 +/-264m); p8 (tier 1, 33.40319,-86.96026 +/-264m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0011","type":"ImageService3","width":1724,"height":2042},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,533.9 120.1,538.0 119.0,0.0 1724.0,0.0 1724.0,238.5 1577.6,237.7 1575.4,770.5 1575.6,817.5 1724.0,818.0 1724.0,1103.7 1439.2,1103.5 1440.3,2042.0 -0.0,2042.0 -0.0,1965.1 121.0,1965.7 118.6,807.5 -0.0,806.6 -0.0,533.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95443540021455,33.398004877952914]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95232895644088,33.40061331922667]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,2042.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94865419014916,33.398515644415504]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2042.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95076063392283,33.395907203141746]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p12","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"26"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0012","type":"ImageService3","width":1730,"height":2042},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"274.0,830.1 274.3,556.1 131.6,556.4 134.2,0.0 1562.3,0.0 1555.8,1993.4 -0.0,1999.9 -0.0,831.5 274.0,830.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[840.0,1373.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9485991,33.3997863]}},{"type":"Feature","properties":{"resourceCoords":[840.0,289.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9506339,33.4009449]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p13","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"28"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0013","type":"ImageService3","width":1736,"height":2036},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1736.0,0.0 1736.0,549.3 1736.0,549.3 1736.0,648.1 1288.3,649.3 1288.8,824.7 1513.9,823.8 1517.2,1997.4 112.5,1998.6 120.8,5.3 1736.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[116.0,1374.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9476868,33.4009172]}},{"type":"Feature","properties":{"resourceCoords":[121.0,293.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.949711,33.402079]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0015","type":"ImageService3","width":1735,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2046.0 0.0,0.0 1735.0,0.0 1735.0,1294.6 1735.0,1294.6 1735.0,2046.0 -0.0,2046.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0015/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9549617200839,33.40653368932842]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95395694462464,33.407821855297854]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9521499906544,33.40682574816037]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95315476611367,33.40553758219094]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0017","type":"ImageService3","width":1735,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"112.2,1507.9 -0.0,1506.8 -0.0,-0.0 1589.6,0.0 1589.6,91.0 1532.0,90.5 1531.9,120.8 1589.7,121.2 1593.2,309.1 1531.7,308.3 1531.5,488.5 1590.0,489.0 1590.9,888.1 1735.0,888.3 1735.0,944.9 1590.8,943.7 1591.2,1889.2 482.9,1885.5 482.9,1794.1 111.9,1791.3 112.2,1507.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9676811727283,33.39894181649985]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96354785457207,33.40407350571035]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95639221931103,33.39999957230418]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96052553746726,33.39486788309368]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0018","type":"ImageService3","width":1741,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1543.5,2046.0 683.3,2046.0 683.0,1922.0 538.9,1952.7 536.0,1551.7 380.6,1573.6 -0.0,1552.8 0.0,0.0 1635.2,0.0 1637.9,288.1 1741.0,287.9 1741.0,533.8 1539.7,535.8 1543.5,2046.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0018/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96599769831641,33.39152735086436]}},{"type":"Feature","properties":{"resourceCoords":[1741.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96185777868328,33.39655899265199]}},{"type":"Feature","properties":{"resourceCoords":[1741.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95482520204357,33.39246826215561]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9589651216767,33.38743662036798]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0019","type":"ImageService3","width":1735,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1587.2,87.5 1587.4,162.7 1735.0,162.8 1735.0,931.1 1594.2,932.0 1596.5,1209.2 1534.5,1207.5 1535.4,1348.0 1596.5,1348.1 1601.5,1944.8 1539.2,1944.8 1539.4,1984.5 1735.0,1983.2 1735.0,2022.0 -0.0,2046.0 -0.0,244.9 199.3,243.4 199.9,0.0 471.3,0.0 471.9,92.0 1587.2,87.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0019/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96134684270248,33.39539869550407]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95719451938311,33.40047226334548]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95007844461598,33.39635530538488]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95423076793536,33.39128173754347]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p2","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0002","type":"ImageService3","width":1736,"height":2042},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.2,1868.4 140.1,1895.1 135.1,74.3 1736.0,70.5 1736.0,1267.4 1627.5,1267.3 1628.2,1868.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[889.0,1880.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9593928,33.3915616]}},{"type":"Feature","properties":{"resourceCoords":[889.0,690.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.96146,33.392736]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0020","type":"ImageService3","width":1724,"height":2042},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1555.1,0.0 1522.1,176.9 1705.3,599.5 1419.6,726.5 1378.4,947.4 1539.4,877.4 1680.0,1197.9 1441.7,1309.5 1511.1,1464.9 1499.8,1794.8 1377.4,1768.4 1370.2,1895.0 1313.8,1888.4 1312.6,1901.2 1355.8,1996.8 1251.0,2042.0 0.0,2042.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96498257264743,33.379959563769184]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9620979273528,33.38541362476495]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,2042.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95441575784098,33.3825404272925]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2042.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9573004031356,33.37708636629673]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0021","type":"ImageService3","width":1724,"height":2036},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 1050.6,0.0 1055.5,63.7 1252.9,64.0 1426.1,84.7 1579.6,63.5 1581.6,459.4 1724.0,429.4 1724.0,2036.0 1677.3,2036.0 1681.3,1722.9 214.3,1694.6 125.1,1565.5 333.1,1416.3 141.4,1134.9 -0.0,1230.5 -0.0,1012.0 250.5,839.5 -0.0,468.2 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0021/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96340241654315,33.385470898721]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95926447336706,33.39052530873089]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,2036.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95216576009584,33.386416117233544]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2036.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95630370327193,33.381361707223654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0022__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p22 [2]","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"19"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6980.0"},{"label":"split_canvas_h","value":"6404.8"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0022__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0022","type":"ImageService3","width":1745,"height":2053},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"26.4,637.6 -0.0,643.0 0.0,1548.0 1745.0,1601.2 1745.0,0.0 1503.1,0.0 1409.3,0.0 242.7,0.0 301.0,330.5 176.3,329.4 193.9,454.1 137.7,459.0 138.9,471.7 199.7,556.1 57.2,655.2 52.4,675.2 26.4,637.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0022__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[234.0,931.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.95385,33.38078]}},{"type":"Feature","properties":{"resourceCoords":[1277.0,496.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9528095,33.3846029]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p23","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"53"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0023","type":"ImageService3","width":1730,"height":2048},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"125.4,0.0 1536.5,0.0 1536.4,102.1 1607.7,101.8 1602.4,1762.5 1510.2,1762.9 1512.5,2047.3 -0.0,2048.0 -0.0,22.1 125.1,22.3 125.4,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[859.0,1212.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9462169,33.3935919]}},{"type":"Feature","properties":{"resourceCoords":[859.0,1398.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9455625,33.39322]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p24","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"46"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0024","type":"ImageService3","width":1736,"height":2048},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1610.3,125.2 1603.2,1406.6 1736.0,1409.6 1736.0,2048.0 -0.0,2048.0 -0.0,1765.4 91.7,1765.7 110.7,115.7 1610.3,125.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[861.0,852.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.94392,33.398777]}},{"type":"Feature","properties":{"resourceCoords":[107.0,483.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.947029,33.397269]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p25","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"47"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0025","type":"ImageService3","width":1735,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,94.2 0.0,0.0 1735.0,0.0 1735.0,527.1 1643.3,500.5 1616.3,591.1 1556.7,669.7 1478.9,730.6 1580.7,897.5 1523.7,898.2 1735.0,1251.5 1735.0,1276.6 1481.4,1277.2 1481.2,1439.3 1735.0,1454.8 1735.0,1659.3 1614.8,1659.5 1608.7,2021.0 1480.3,2021.6 1480.2,2046.0 255.7,2046.0 255.6,2025.6 121.0,2023.4 121.0,94.1 -0.0,94.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[121.0,910.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9440763,33.402083]}},{"type":"Feature","properties":{"resourceCoords":[121.0,1652.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9414784,33.4006155]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p26","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"20"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0026","type":"ImageService3","width":1724,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"133.4,1241.5 253.1,1241.2 252.8,1037.5 -0.0,1023.5 -0.0,861.0 268.6,860.0 41.5,483.7 98.3,482.9 -0.0,322.2 133.3,177.8 160.1,87.5 251.4,113.8 251.2,0.0 1724.0,0.0 1724.0,356.7 1621.8,357.5 1617.5,1596.2 1464.2,1595.2 1464.6,1786.8 1620.0,1786.8 1621.1,1965.2 1724.0,1963.8 1724.0,2034.0 -0.0,2034.0 -0.0,1602.3 127.8,1601.5 133.4,1241.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1249.0,1965.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9327112,33.4067981]}},{"type":"Feature","properties":{"resourceCoords":[1249.0,121.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.939189,33.410469]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0027","type":"ImageService3","width":1735,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1735.0,0.0 1735.0,1686.1 1735.0,1686.1 1735.0,2046.0 -0.0,2046.0 -0.0,1700.7 262.2,1702.9 262.3,1631.7 158.2,1632.2 157.3,1451.0 -0.0,1449.7 -0.0,1255.2 155.2,1257.5 161.9,0.0 1735.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0027/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.93784572484124,33.410619774437485]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.93381004083389,33.415672838590915]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.92672153116503,33.411672199904785]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.93075721517238,33.406619135751356]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0028__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p28 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"500.8"},{"label":"split_canvas_w","value":"5794.4"},{"label":"split_canvas_h","value":"7683.2"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0028__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0028","type":"ImageService3","width":1735,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1448.6,2046.0 1024.6,880.7 0.0,125.2 -0.0,2046.0 1448.6,2046.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0028__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[218.9,1550.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.938104,33.41463]}},{"type":"Feature","properties":{"resourceCoords":[218.9,1852.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.93757,33.414319]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p29","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"35"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0029","type":"ImageService3","width":1735,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1735.0,0.0 1735.0,2034.0 -0.0,2034.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[854.0,1589.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.967394,33.405628]}},{"type":"Feature","properties":{"resourceCoords":[487.0,475.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.972185,33.406768]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0003","type":"ImageService3","width":1729,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 1729.0,0.0 1729.0,2040.0 -0.0,2040.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95883539043447,33.40380434706482]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9567636424863,33.40635430347422]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9531849279147,33.40429929810722]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95525667586288,33.40174934169782]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0030__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p30 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2516.8"},{"label":"split_canvas_w","value":"6896.0"},{"label":"split_canvas_h","value":"5619.2"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0030__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0030","type":"ImageService3","width":1724,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1424.7,1811.8 1426.4,2034.0 1724.0,2034.0 1724.0,1170.5 1660.5,1169.5 1663.5,802.9 1432.2,793.1 1438.7,631.9 0.0,645.6 -0.0,1823.1 1424.7,1811.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0030__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[543.0,1181.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.975206,33.410074]}},{"type":"Feature","properties":{"resourceCoords":[543.0,1553.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.973907,33.409326]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p32","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0032","type":"ImageService3","width":1735,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1735.0,0.0 1735.0,2034.0 206.2,2030.3 196.2,1719.8 -0.0,1719.5 -0.0,-0.0 1735.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[399.0,755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.97708,33.417201]}},{"type":"Feature","properties":{"resourceCoords":[399.0,383.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.978569,33.418135]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0033","type":"ImageService3","width":1730,"height":2042},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1730.0,616.6 1598.4,615.8 1602.5,2042.0 -0.0,2042.0 -0.0,-0.0 1730.0,0.0 1730.0,616.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0033/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9622805140689,33.41352028727757]}},{"type":"Feature","properties":{"resourceCoords":[1730.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95816507713602,33.418619190619225]}},{"type":"Feature","properties":{"resourceCoords":[1730.0,2042.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95100537762951,33.414535835003086]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2042.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95512081456239,33.40943693166143]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p34","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0034","type":"ImageService3","width":1724,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"123.9,92.4 256.6,93.2 256.6,0.0 1724.0,0.0 1724.0,2040.0 -0.0,2040.0 -0.0,1530.3 128.7,1530.3 123.9,92.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0034/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95693289080371,33.41682126398026]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95286221148382,33.42185949708187]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94576975243481,33.41781062437852]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94984043175471,33.41277239127691]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p35","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0035","type":"ImageService3","width":1729,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 1729.0,0.0 1729.0,167.9 1478.0,233.8 1560.5,608.3 1729.0,563.2 1729.0,747.3 1411.0,824.1 1390.0,945.2 1308.3,966.4 1389.5,1014.0 1372.6,1045.7 1314.8,1379.6 1422.4,1409.0 1338.1,1718.6 1259.8,1696.7 1219.3,1930.7 1729.0,2019.0 1729.0,2046.0 0.0,2046.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0035/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95531571661758,33.42820327100531]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95352866157569,33.434014995634556]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9453457845647,33.43223770600839]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94713283960658,33.42642598137914]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p36","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0036","type":"ImageService3","width":1730,"height":2042},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,923.9 298.9,794.5 267.6,613.9 110.0,686.8 0.0,419.9 0.0,317.6 200.5,226.2 171.9,61.4 0.0,91.2 0.0,-0.0 1730.0,0.0 1730.0,1786.2 1580.2,1757.4 1434.9,1766.0 1425.7,1719.3 1452.8,1654.6 1396.9,1648.0 1015.1,1854.3 1151.7,2005.2 1108.8,1995.5 1098.6,2042.0 0.0,2042.0 0.0,1805.6 80.5,1813.8 110.6,1495.7 0.0,1485.2 0.0,923.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0036/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95405468825707,33.43355685109947]}},{"type":"Feature","properties":{"resourceCoords":[1730.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95109882921491,33.43905399057522]}},{"type":"Feature","properties":{"resourceCoords":[1730.0,2042.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94337806983788,33.436121884163434]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2042.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94633392888004,33.430624744687684]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0037__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p37 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4161.2"},{"label":"split_canvas_h","value":"8220.0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0037__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0037","type":"ImageService3","width":1746,"height":2055},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"32.8,1438.8 -0.0,1485.7 -0.0,1928.4 432.6,1821.3 553.8,1696.8 605.5,1595.4 456.5,1583.9 540.4,1487.3 476.9,1485.7 595.3,963.7 1040.3,328.7 950.6,256.8 599.5,179.6 601.5,0.0 -0.0,-0.0 -0.0,1099.5 283.7,1253.5 185.8,1374.1 123.5,1508.7 77.4,1494.4 32.8,1438.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0037__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[279.1,1196.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9443794,33.4366843]}},{"type":"Feature","properties":{"resourceCoords":[-152.1,1942.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9459279,33.4340379]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0037__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p37 [2]","metadata":[{"label":"streets","value":"1"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"1907.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5076.4"},{"label":"split_canvas_h","value":"8220.0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0037__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0037","type":"ImageService3","width":1746,"height":2055},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1746.0,-0.0 601.5,0.0 599.5,179.6 950.6,256.8 1040.3,328.7 595.3,963.7 476.9,1485.7 640.8,1489.9 640.6,2055.0 1746.0,2055.0 1746.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0037__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[476.9,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9393663610366,33.440041689535576]}},{"type":"Feature","properties":{"resourceCoords":[1746.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.93504608642495,33.437337857818115]}},{"type":"Feature","properties":{"resourceCoords":[1746.0,2055.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94029512645558,33.43151109504478]}},{"type":"Feature","properties":{"resourceCoords":[476.9,2055.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94461540106724,33.434214926762245]}},{"type":"Feature","properties":{"resourceCoords":[1551.2,167.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.936136,33.4372795]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0007","type":"ImageService3","width":1714,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"114.7,511.4 -0.0,510.7 -0.0,450.6 114.5,451.2 114.2,270.6 -0.0,270.8 -0.0,-0.0 1714.0,0.0 1714.0,2034.0 119.2,2034.0 116.2,1241.6 -0.0,1240.8 -0.0,883.0 122.1,884.4 114.7,511.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96451067140345,33.40374702073063]}},{"type":"Feature","properties":{"resourceCoords":[1714.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96245007578011,33.40629780803747]}},{"type":"Feature","properties":{"resourceCoords":[1714.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95884942265742,33.40424207839771]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96091001828076,33.40169129109086]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Bessemer, Alabama | 1924 | sanborn00014_008 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T11:42:19Z","modified":"2026-09-22T11:42:19Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0009","type":"ImageService3","width":1729,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1511.8,22.4 1520.0,2040.0 121.0,2040.0 104.4,0.0 1511.8,22.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924:00014_1924-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9606974835968,33.40160316010453]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95861271852438,33.404146717824766]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95504306562275,33.40207875332562]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95712783069517,33.39953519560538]}}]}}]}