{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn00014_009.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":"30"},{"label":"unplaced","value":"13"},{"label":"fit sources","value":"georef 14, georef-snap 11, georef-street 2, snap:0 2, snap:1 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p1 (tier 3, 33.40477,-86.95169 +/-861m); p15 (tier 1, 33.40421,-86.95362 +/-542m); p16 (tier 1, 33.40804,-86.95734 +/-267m); p22__1 (tier 1, 33.38524,-86.95014 +/-348m); p28__2 (tier 2, 33.41851,-86.93497 +/-1965m); p30__2 (tier 1, 33.40387,-86.97240 +/-362m); p31 (tier 1, 33.40344,-86.96218 +/-533m); p37__1 (tier 2, 33.43555,-86.94479 +/-100m); p38__1 (tier 2, 33.41315,-86.95277 +/-162m); p38__2 (tier 1, 33.41217,-86.95304 +/-525m); p5 (tier 1, 33.40606,-86.96245 +/-528m); p7 (tier 1, 33.40546,-86.96430 +/-266m); p8 (tier 1, 33.40317,-86.96025 +/-265m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0010/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_009 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0010","type":"ImageService3","width":1729,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"82.6,1854.0 85.9,106.0 1562.3,115.0 1572.0,1873.8 82.6,1854.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.9575338136566,33.3998424135725]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95547583984202,33.402412335817424]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95187986840048,33.40037690894103]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95393784221505,33.397806986696104]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p11","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0011","type":"ImageService3","width":1724,"height":2032},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"146.9,540.9 145.2,78.9 1527.1,80.6 1527.3,224.7 1599.5,223.6 1598.0,807.0 1724.0,806.4 1724.0,1090.4 1450.2,1092.5 1452.8,2032.0 -0.0,2032.0 -0.0,1960.7 150.0,1960.2 145.8,808.9 -0.0,809.0 -0.0,538.1 146.9,540.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1239.0,1952.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.949414,33.397821]}},{"type":"Feature","properties":{"resourceCoords":[1239.0,805.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.951488,33.399009]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p12","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"26"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0012","type":"ImageService3","width":1741,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2000.1 -0.0,837.0 263.1,835.7 263.9,562.9 142.8,563.1 145.5,0.0 1567.0,0.0 1561.4,1783.7 1741.0,1783.2 1741.0,1992.8 -0.0,2000.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[848.0,1376.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9485991,33.3997863]}},{"type":"Feature","properties":{"resourceCoords":[848.0,297.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9506339,33.4009449]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p13","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0013","type":"ImageService3","width":1735,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"146.1,2040.0 156.1,80.5 1573.7,93.2 1574.1,2040.0 146.1,2040.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.9508643,33.4023815]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9486891,33.4050572]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94492069999998,33.402922100000005]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9470959,33.4002464]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0014/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_009 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0014","type":"ImageService3","width":1729,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"182.5,1889.4 157.0,4.2 1729.0,0.0 1729.0,2040.0 1643.0,2040.0 1642.2,1900.2 182.5,1889.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0014/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95410532089389,33.40420368147667]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95199494961298,33.40679057640792]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94836437603361,33.40469727019013]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95047474731452,33.40211037525888]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p17","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"27"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0017","type":"ImageService3","width":1729,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1629.1 0.0,0.0 1729.0,0.0 1729.0,949.8 1592.3,951.0 1592.6,1064.2 1598.0,1905.6 115.2,1918.6 114.7,1627.5 -0.0,1629.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1221.0,1246.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.960469,33.400093]}},{"type":"Feature","properties":{"resourceCoords":[1589.0,506.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.962173,33.4026651]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0018","type":"ImageService3","width":1724,"height":2036},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1565.8 -0.0,-0.0 1527.2,0.0 1526.0,144.3 1640.4,144.4 1638.7,435.3 1724.0,435.8 1724.0,879.0 1658.3,878.6 1640.2,1330.2 1516.7,1327.7 1523.1,2036.0 663.0,2036.0 664.3,1940.2 539.7,1965.1 541.5,1571.1 388.6,1590.8 -0.0,1565.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.96621777979087,33.39150876000851]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96211887989443,33.39662070051267]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,2036.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9549388316764,33.3925505847069]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2036.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95903773157283,33.387438644202746]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0019","type":"ImageService3","width":1729,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"134.9,541.9 200.5,542.2 200.5,99.3 1592.0,106.7 1590.8,1219.2 1515.5,1217.0 1514.8,1356.2 1589.6,1357.0 1589.0,1948.8 1512.0,1948.2 1511.9,1984.8 1729.0,1987.3 1729.0,2002.1 1223.7,1998.2 1223.8,2034.0 -0.0,2034.0 -0.0,990.8 116.8,993.0 134.9,541.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.96141000307573,33.39535360347897]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95729463756342,33.400484090786094]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95011614891146,33.396413607988215]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95423151442377,33.391283120681095]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0002","type":"ImageService3","width":1729,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"58.5,139.2 1568.0,143.2 1584.4,2040.0 -0.0,2040.0 -0.0,1892.5 72.2,1893.2 58.5,139.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9557874333947,33.402102909419874]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95371314445914,33.404673712550625]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95010524567496,33.402616145134054]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95217953461052,33.4000453420033]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p20","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"23"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0020","type":"ImageService3","width":1741,"height":2051},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1529.8,0.0 1499.9,148.6 1701.0,620.9 1376.7,762.1 1333.3,977.8 1535.5,891.6 1670.5,1205.2 1435.6,1313.1 1502.3,1465.2 1488.0,1787.3 1368.2,1761.0 1359.9,1884.5 1304.7,1877.9 1303.3,1890.3 1344.8,1983.9 1187.2,2051.0 0.0,2051.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[834.0,1203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.959084,33.380891]}},{"type":"Feature","properties":{"resourceCoords":[1536.0,892.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.959106,33.383595]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0021","type":"ImageService3","width":1729,"height":2028},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1060.7,0.0 1061.8,85.8 1449.5,105.5 1601.7,84.0 1605.1,476.7 1729.0,450.2 1729.0,2028.0 1714.7,2028.0 1714.1,1678.7 460.5,1672.5 446.2,2028.0 306.3,2028.0 280.2,1795.6 163.8,1579.4 369.7,1430.6 178.5,1152.1 -0.0,1273.7 -0.0,1056.6 285.7,858.6 -0.0,438.8 -0.0,-0.0 1060.7,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.96357853879944,33.38542436846307]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95937446540974,33.390520578978226]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2028.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95226579208479,33.38637414259811]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2028.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95646986547449,33.38127793208295]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p22 [2]","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":"6964.0"},{"label":"split_canvas_h","value":"6446.4"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0022__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0022","type":"ImageService3","width":1741,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"44.7,687.9 39.6,707.8 -0.0,697.3 0.0,1569.3 1741.0,1611.6 1741.0,0.0 450.6,0.0 435.3,365.0 291.2,365.7 291.4,366.8 167.1,364.4 183.2,488.8 127.0,493.1 187.9,590.6 44.7,687.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0022__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1263.0,541.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9528095,33.3846029]}},{"type":"Feature","properties":{"resourceCoords":[768.0,1003.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9524108,33.3822744]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p23","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"39"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0023","type":"ImageService3","width":1735,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"494.2,35.7 494.1,0.0 1528.9,0.0 1528.8,126.3 1606.2,126.0 1598.9,2046.0 -0.0,2046.0 -0.0,39.5 494.2,35.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[860.0,866.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9475094,33.3943266]}},{"type":"Feature","properties":{"resourceCoords":[860.0,1786.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9442624,33.3924809]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p24","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"45"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0024","type":"ImageService3","width":1741,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"959.5,104.1 959.3,0.0 1608.9,0.0 1616.1,1204.0 1741.0,1203.2 1741.0,2046.0 -0.0,2046.0 -0.0,2026.8 106.1,2026.5 107.5,109.5 959.5,104.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[865.0,657.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9445654,33.3991356]}},{"type":"Feature","properties":{"resourceCoords":[865.0,472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.945218,33.399509]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p25","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0025","type":"ImageService3","width":1729,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"124.7,2024.4 116.0,814.3 115.9,803.5 111.1,146.5 1729.0,127.3 1729.0,711.2 1627.5,682.6 1601.3,772.8 1542.7,851.3 1465.8,912.4 1568.1,1077.5 1511.5,1078.6 1729.0,1435.7 1729.0,1452.9 1446.6,1455.6 1444.4,1573.5 1469.1,1616.2 1729.0,1630.1 1729.0,1833.2 1607.6,1834.2 1604.6,2040.0 124.7,2024.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.9482195,33.4039515]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9440524,33.409013]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.93689880000001,33.404908500000005]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9410659,33.399847]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p26","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"43"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0026","type":"ImageService3","width":1729,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"145.7,1467.2 149.6,1261.4 271.1,1260.9 272.1,1057.8 49.0,1054.2 -0.0,1021.3 -0.0,881.9 284.1,880.5 57.2,505.1 113.8,504.3 12.3,338.6 89.5,277.9 148.5,199.7 175.2,109.6 276.6,138.7 277.2,0.0 1729.0,0.0 1729.0,507.0 1637.2,507.9 1631.2,1614.0 1483.3,1613.2 1482.4,1804.3 1633.8,1804.2 1635.1,1982.3 1481.5,1982.4 1481.2,2040.0 -0.0,2040.0 -0.0,1466.5 145.7,1467.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1262.0,1804.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9333412,33.4071485]}},{"type":"Feature","properties":{"resourceCoords":[1262.0,142.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.939189,33.410469]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0027","type":"ImageService3","width":1735,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"244.6,131.4 244.0,0.0 1735.0,0.0 1735.0,2040.0 -0.0,2040.0 -0.0,1636.9 156.4,1637.1 154.2,1455.3 -0.0,1455.2 -0.0,1260.0 150.6,1261.1 151.2,132.2 244.6,131.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.93781266748961,33.41066386733626]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.93374482222204,33.4156734996048]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.92673781864191,33.41165282145463]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.93080566390948,33.40664318918609]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p28 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5843.6"},{"label":"split_canvas_h","value":"8160.0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0028__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0028","type":"ImageService3","width":1735,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1460.9,2040.0 1041.1,875.3 1038.9,869.7 0.0,0.0 -0.0,2040.0 1460.9,2040.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0028__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[216.0,1530.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.938104,33.41463]}},{"type":"Feature","properties":{"resourceCoords":[216.0,1834.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.93757,33.414319]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p29","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"29"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0029","type":"ImageService3","width":1729,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"304.1,0.0 304.9,213.1 481.1,212.4 482.6,0.0 1729.0,0.0 1729.0,1201.6 1588.7,1218.2 1579.4,1964.5 1518.6,1963.9 1517.7,2040.0 -0.0,2040.0 0.0,0.0 304.1,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[973.0,475.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9709997,33.4082118]}},{"type":"Feature","properties":{"resourceCoords":[246.0,1584.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.968791,33.403889]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0003","type":"ImageService3","width":1729,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"75.7,1856.0 69.0,163.6 1596.1,165.2 1595.4,0.0 1729.0,0.0 1729.0,1710.1 1597.6,1710.5 1598.1,1854.9 75.7,1856.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.95880869599576,33.403803175918945]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95674210855573,33.40634642879762]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95318324927983,33.404302600417196]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95524983671984,33.40175934753852]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p30 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"12"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2569.6"},{"label":"split_canvas_w","value":"6940.0"},{"label":"split_canvas_h","value":"5590.4"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0030__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0030","type":"ImageService3","width":1735,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2040.0 175.4,2040.0 177.8,1828.6 1418.7,1833.3 1417.9,2040.0 1735.0,2040.0 1735.0,1000.1 1679.2,999.9 1679.0,838.5 1422.8,823.1 1428.0,645.4 0.0,659.5 -0.0,2040.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0030__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[557.0,1192.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.975206,33.410074]}},{"type":"Feature","properties":{"resourceCoords":[557.0,823.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.976519,33.410798]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p32","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0032","type":"ImageService3","width":1729,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 1729.0,0.0 1729.0,2034.0 428.7,2034.0 432.7,1871.8 175.3,1857.2 180.1,1675.5 -0.0,1676.1 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[434.0,754.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.977775,33.416298]}},{"type":"Feature","properties":{"resourceCoords":[434.0,1494.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.97516,33.414846]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0033","type":"ImageService3","width":1735,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1735.0,0.0 1735.0,802.2 1217.7,803.0 1218.3,987.2 1587.7,986.1 1591.8,1725.1 1221.2,1725.5 1221.4,1912.2 1109.0,1912.2 1109.4,2046.0 -0.0,2046.0 -0.0,-0.0 1735.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.96356140662402,33.41430074337014]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95942291223258,33.419411095265055]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95225369331794,33.415308736521816]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95639218770938,33.4101983846269]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p34","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"15"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0034","type":"ImageService3","width":1724,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1220.8 113.2,1220.4 113.8,1032.8 487.1,1031.2 485.4,288.7 113.3,290.9 113.3,105.9 634.5,103.4 634.8,0.0 1724.0,0.0 1724.0,2046.0 -0.0,2046.0 -0.0,1220.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0034/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1610.0,1402.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9497523,33.4180704]}},{"type":"Feature","properties":{"resourceCoords":[1610.0,470.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.95301,33.419921]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p35","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0035","type":"ImageService3","width":1747,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1747.0,0.0 1747.0,130.6 1474.5,208.8 1566.7,585.8 1747.0,533.0 1747.0,831.4 1320.0,954.0 1403.1,1000.3 1389.0,1028.4 1342.1,1373.4 1445.7,1399.2 1367.6,1714.4 1298.2,1696.7 1264.5,1944.8 1747.0,2010.4 1747.0,2046.0 0.0,2046.0 -0.0,0.0 1747.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.95531240469356,33.42829656872334]}},{"type":"Feature","properties":{"resourceCoords":[1747.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9533699530417,33.434062486476094]}},{"type":"Feature","properties":{"resourceCoords":[1747.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94533522535366,33.43215055225069]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94727767700552,33.426384634497936]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p36","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0036","type":"ImageService3","width":1747,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"284.1,602.0 114.9,677.6 0.0,387.0 0.0,310.1 230.7,208.7 213.3,81.0 0.0,110.0 0.0,0.0 1747.0,0.0 1747.0,2046.0 1170.3,2046.0 1150.5,2023.5 1108.9,2013.5 1101.3,2046.0 0.0,2046.0 0.0,1799.0 70.2,1807.2 104.6,1488.6 0.0,1477.2 0.0,1036.4 236.3,933.4 323.8,893.7 284.1,602.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.95403002636374,33.433495121663746]}},{"type":"Feature","properties":{"resourceCoords":[1747.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9511419465028,33.43906414169876]}},{"type":"Feature","properties":{"resourceCoords":[1747.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9433811796838,33.436221587248895]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94626925954474,33.43065256721388]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p37 [2]","metadata":[{"label":"streets","value":"1"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"1908.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4987.2"},{"label":"split_canvas_h","value":"8136.0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0037__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0037","type":"ImageService3","width":1724,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1724.0,-0.0 589.5,0.0 585.5,179.2 938.4,251.9 1028.8,320.9 594.9,953.2 477.2,1480.8 637.8,1481.5 642.3,2034.0 1724.0,2034.0 1724.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0037__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[477.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.93936653162706,33.43999712042805]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.93512654520309,33.437343536847095]}},{"type":"Feature","properties":{"resourceCoords":[1724.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94031943836737,33.43157910060754]}},{"type":"Feature","properties":{"resourceCoords":[477.2,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94455942479134,33.4342326841885]}},{"type":"Feature","properties":{"resourceCoords":[1545.0,157.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.936136,33.4372795]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0004/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_009 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0004","type":"ImageService3","width":1729,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 1729.0,0.0 1729.0,1771.6 1607.8,1771.2 1608.0,1934.7 95.5,1928.2 95.3,1707.0 -0.0,1706.8 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.96196916230322,33.4055449318013]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95989249373966,33.40811876802223]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95628019235625,33.40605892337244]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2040.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9583568609198,33.403485087151516]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0006/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_009 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0006","type":"ImageService3","width":1735,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"119.5,1566.8 121.8,96.7 405.2,61.4 396.4,0.0 1735.0,0.0 1735.0,2046.0 -0.0,2046.0 -0.0,1566.2 119.5,1566.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96724300779735,33.40848366565603]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96515089768688,33.411080824300875]}},{"type":"Feature","properties":{"resourceCoords":[1735.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96150762528151,33.409006848554824]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2046.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.96359973539198,33.40640968990998]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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_009 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T10:37:26Z","modified":"2026-09-22T10:37:26Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-0009","type":"ImageService3","width":1729,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"110.0,0.0 1578.8,0.0 1584.0,1893.8 115.9,1893.0 110.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000141924a:00014_1924a-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":[-86.96073728930972,33.4016119558697]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95865065264857,33.404186880865005]}},{"type":"Feature","properties":{"resourceCoords":[1729.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95504761146194,33.40212314505314]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2034.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95713424812308,33.39954822005783]}}]}}]}