{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00015_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Birmingham, Alabama | 1891 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"88"},{"label":"placed","value":"13"},{"label":"unplaced","value":"75"},{"label":"fit sources","value":"georef-snap 6, georef 5, snap:0 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"20 sheet(s) cut into 67 panels"},{"label":"unplaced pages","value":"p10 (tier 1, 33.39899,-86.94453 +/-130m); p13 (tier 1, 33.40299,-86.94698 +/-133m); p15 (tier 3, 33.40776,-86.94878 +/-564m); p16 (tier 1, 33.40545,-86.94431 +/-136m); p17__1 (tier 1, 33.40888,-86.94340 +/-122m); p17__2 (tier 3, 33.40900,-86.94431 +/-564m); p18__1 (tier 1, 33.41305,-86.93963 +/-107m); p18__2 (tier 1, 33.41278,-86.93969 +/-100m); p19 (tier 1, 33.40982,-86.95201 +/-143m); p23 (tier 1, 33.39926,-86.95928 +/-135m); p24__1 (tier 1, 33.40239,-86.95909 +/-100m); p24__2 (tier 1, 33.39959,-86.96307 +/-117m); p24__3 (tier 1, 33.39942,-86.96233 +/-100m); p25 (tier 1, 33.39040,-86.95816 +/-146m); p26__2 (tier 1, 33.39577,-86.94750 +/-105m); p26__4 (tier 1, 33.39307,-86.94800 +/-100m); p26__5 (tier 1, 33.39309,-86.94817 +/-100m); p27__1 (tier 1, 33.39134,-86.96412 +/-101m); p27__2 (tier 1, 33.39080,-86.96384 +/-100m); p27__3 (tier 1, 33.39062,-86.96350 +/-100m); p27__4 (tier 1, 33.41078,-86.95691 +/-100m); p27__5 (tier 1, 33.39185,-86.96316 +/-100m); p28__1 (tier 1, 33.41529,-86.93223 +/-146m); p28__2 (tier 1, 33.41459,-86.93346 +/-100m); p28__3 (tier 1, 33.41358,-86.93284 +/-100m); p29__1 (tier 3, 33.41869,-86.93189 +/-564m); p29__2 (tier 3, 33.41869,-86.93189 +/-564m); p3 (tier 1, 33.39977,-86.95469 +/-145m); p30__1 (tier 3, 33.41939,-86.93499 +/-564m); p30__2 (tier 1, 33.41757,-86.93539 +/-100m); p30__3 (tier 3, 33.41939,-86.93499 +/-564m); p31__1 (tier 1, 33.42856,-86.94807 +/-100m); p31__2 (tier 1, 33.42829,-86.94789 +/-100m); p31__3 (tier 3, 33.42766,-86.95696 +/-930m); p31__4 (tier 1, 33.42876,-86.94594 +/-100m); p31__5 (tier 3, 33.42766,-86.95696 +/-930m); p32__1 (tier 1, 33.42628,-86.92878 +/-105m); p32__2 (tier 1, 33.42572,-86.92887 +/-141m); p32__3 (tier 1, 33.42474,-86.93133 +/-100m); p33__1 (tier 1, 33.42378,-86.92755 +/-100m); p33__2 (tier 1, 33.42184,-86.92900 +/-107m); p33__3 (tier 1, 33.42197,-86.92718 +/-100m); p34__1 (tier 4, 33.40091,-86.95140 +/-1014m); p34__2 (tier 4, 33.40091,-86.95140 +/-1014m); p34__3 (tier 4, 33.40091,-86.95140 +/-1014m); p34__4 (tier 4, 33.40091,-86.95140 +/-1014m); p34__5 (tier 4, 33.40091,-86.95140 +/-1014m); p34__6 (tier 4, 33.40091,-86.95140 +/-1014m); p35 (tier 4, 33.40091,-86.95140 +/-1014m); p36__1 (tier 4, 33.40091,-86.95140 +/-1014m); p36__2 (tier 4, 33.40091,-86.95140 +/-1014m); p37__1 (tier 4, 33.40091,-86.95140 +/-1014m); p37__2 (tier 4, 33.40091,-86.95140 +/-1014m); p37__3 (tier 1, 33.38018,-86.96706 +/-100m); p37__4 (tier 4, 33.40091,-86.95140 +/-1014m); p37__5 (tier 4, 33.40091,-86.95140 +/-1014m); p38__1 (tier 4, 33.40091,-86.95140 +/-1014m); p38__2 (tier 4, 33.40091,-86.95140 +/-1014m); p38__3 (tier 4, 33.40091,-86.95140 +/-1014m); p38__4 (tier 4, 33.40091,-86.95140 +/-1014m); p38__5 (tier 4, 33.40091,-86.95140 +/-1014m); p39__1 (tier 1, 33.42919,-86.94602 +/-141m); p39__2 (tier 1, 33.42953,-86.94659 +/-100m); p40__1 (tier 4, 33.40091,-86.95140 +/-1014m); p40__2 (tier 4, 33.40091,-86.95140 +/-1014m); p41__1 (tier 4, 33.40091,-86.95140 +/-1014m); p41__2 (tier 4, 33.40091,-86.95140 +/-1014m); p41__3 (tier 4, 33.40091,-86.95140 +/-1014m); p42__1 (tier 4, 33.40091,-86.95140 +/-1014m); p42__2 (tier 4, 33.40091,-86.95140 +/-1014m); p42__3 (tier 4, 33.40091,-86.95140 +/-1014m); p42__4 (tier 4, 33.40091,-86.95140 +/-1014m); p4__1 (tier 1, 33.39783,-86.95223 +/-143m); p4__2 (tier 1, 33.39564,-86.95355 +/-100m); p9 (tier 1, 33.39988,-86.94753 +/-139m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.07"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0011","type":"ImageService3","width":1638,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"51.1,86.6 1523.2,112.6 1573.8,1807.9 1461.9,1917.3 67.5,1905.9 51.1,86.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9406358638707,33.40185608486602]}},{"type":"Feature","properties":{"resourceCoords":[1638.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.93907078086222,33.40096365124439]}},{"type":"Feature","properties":{"resourceCoords":[1638.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94033381665517,33.39939800541544]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94189889966364,33.40029043903707]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.19"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0012","type":"ImageService3","width":1628,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"107.1,148.2 415.6,43.0 1563.1,121.7 1534.0,1831.4 807.9,1880.1 117.7,1787.1 58.9,1837.4 107.1,148.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94540988502432,33.4017386181066]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94420286968236,33.4032434432937]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94206000231222,33.40202860512835]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94326701765418,33.40052377994125]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.11"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0014","type":"ImageService3","width":1628,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1083.5,141.6 1518.0,173.2 1519.8,15.7 1529.1,16.4 1559.0,18.4 1561.5,1851.0 158.8,1917.6 158.7,1924.4 107.0,1923.6 94.3,1654.3 108.8,1275.4 111.3,683.8 122.2,155.3 1083.5,141.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0014/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95345537708431,33.40570281688696]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95246529324919,33.40696283370904]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95067096240315,33.40596637187951]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95166104623827,33.40470635505743]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p2","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.30"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0002","type":"ImageService3","width":1639,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"364.1,1811.5 348.4,1866.1 281.2,1806.1 144.0,1811.2 66.4,1696.8 42.3,1466.9 26.2,484.0 79.2,43.5 1576.5,37.3 1580.1,59.8 1620.0,862.5 1545.7,1906.8 1134.0,1922.2 701.3,1828.9 364.1,1811.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1016.0,1486.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.957827,33.395412]}},{"type":"Feature","properties":{"resourceCoords":[1581.0,1486.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.956789,33.394824]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.08"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0020","type":"ImageService3","width":1627,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"75.6,1384.8 100.4,72.6 1568.3,59.0 1574.7,1714.2 1534.2,1711.6 1532.8,1874.1 1084.4,1842.7 92.7,1859.2 80.2,1423.0 74.8,1422.9 75.6,1384.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95494925103289,33.40657338146209]}},{"type":"Feature","properties":{"resourceCoords":[1627.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95398658698335,33.407791894241356]}},{"type":"Feature","properties":{"resourceCoords":[1627.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95225026085254,33.406822451612356]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95321292490208,33.40560393883309]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p21","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.30"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0021","type":"ImageService3","width":1629,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1602.3,1863.5 1560.0,1806.1 1502.5,114.6 562.4,49.0 530.4,135.6 453.1,144.7 384.5,41.7 68.7,63.4 53.7,1646.0 1.0,1668.6 1.0,1885.2 780.0,1895.0 780.0,1879.0 1602.3,1863.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[780.0,1365.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9547136,33.4048869]}},{"type":"Feature","properties":{"resourceCoords":[780.0,1895.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.954169,33.404584]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p22","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.08"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0022","type":"ImageService3","width":1634,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"42.2,1757.0 69.0,45.7 1602.0,66.0 1567.0,1712.1 1633.0,1774.2 1633.0,1792.0 1633.0,1899.3 834.0,1890.0 15.9,1891.7 15.8,1811.6 15.8,1760.5 42.2,1757.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0022/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95668660000636,33.40179405841384]}},{"type":"Feature","properties":{"resourceCoords":[1634.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95569017951753,33.40304166281846]}},{"type":"Feature","properties":{"resourceCoords":[1634.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95390480983772,33.40205103397874]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95490123032656,33.400803429574125]}},{"type":"Feature","properties":{"resourceCoords":[834.0,1890.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9544467,33.4014702]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0026__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p26 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.22"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1573.6"},{"label":"split_canvas_h","value":"3676.0"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0026__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0026","type":"ImageService3","width":1634,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"28.7,695.1 196.7,695.7 195.6,905.3 392.4,905.2 392.4,770.2 392.4,726.8 387.6,725.8 373.9,154.6 291.1,148.0 290.7,148.0 291.2,82.8 221.7,22.4 36.2,116.7 28.7,695.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0026__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.950097239597,33.393963416740284]}},{"type":"Feature","properties":{"resourceCoords":[393.4,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94982260836363,33.39430366607598]}},{"type":"Feature","properties":{"resourceCoords":[393.4,919.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94887630696537,33.39376370350878]}},{"type":"Feature","properties":{"resourceCoords":[0.0,919.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94915093819874,33.39342345417309]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0026__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p26 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.30"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3676.0"},{"label":"split_canvas_w","value":"3294.0"},{"label":"split_canvas_h","value":"2170.0"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0026__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0026","type":"ImageService3","width":1634,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"298.1,919.0 252.7,919.0 35.1,979.4 41.5,1406.2 794.4,1370.6 799.5,983.9 621.9,949.9 622.5,1131.0 422.9,1131.9 423.2,919.0 298.1,919.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0026__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,919.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94953632194114,33.393364860782015]}},{"type":"Feature","properties":{"resourceCoords":[823.5,919.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94896676076297,33.39406519354637]}},{"type":"Feature","properties":{"resourceCoords":[823.5,1461.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9484178695257,33.39374961769484]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1461.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94898743070387,33.393049284930484]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p5","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.13"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0005","type":"ImageService3","width":1638,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1130.8,38.5 1556.0,140.4 1561.1,1898.2 141.8,1904.0 99.7,118.0 1130.8,38.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[808.0,1322.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.9557012,33.398987]}},{"type":"Feature","properties":{"resourceCoords":[808.0,753.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.956218,33.3992808]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.04"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0006","type":"ImageService3","width":1639,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"402.3,164.3 808.1,151.9 1204.8,145.3 1202.5,83.0 1241.8,118.0 1522.5,97.8 1521.3,12.3 1524.2,12.5 1527.3,12.7 1530.3,139.9 1557.8,978.2 1638.0,977.6 1638.0,996.6 1578.5,1003.6 1569.1,1893.0 1221.3,1907.0 1121.9,1842.8 886.9,1839.3 289.8,1905.0 85.2,1843.8 36.1,1599.6 60.2,204.3 100.8,148.4 399.9,99.0 402.3,164.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95575362843059,33.40041474068509]}},{"type":"Feature","properties":{"resourceCoords":[1639.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95365580144974,33.40288682678111]}},{"type":"Feature","properties":{"resourceCoords":[1639.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.9501592461159,33.40078953611361]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95225707309675,33.398317450017586]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p7","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.20"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0007","type":"ImageService3","width":1638,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"805.4,1916.8 56.5,1910.3 48.5,1074.6 42.5,947.4 48.5,935.2 43.9,799.3 48.8,242.0 350.9,107.8 352.3,228.2 786.8,228.4 786.6,219.5 1244.5,205.4 1244.4,178.2 1362.4,200.3 1517.6,156.1 1529.6,229.2 1527.5,492.9 1530.0,788.0 1525.1,977.1 1533.9,1123.5 1559.1,1123.5 1561.9,1874.0 1277.3,1930.2 1254.9,1930.2 1254.5,1913.8 805.4,1916.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1530.0,788.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.952215,33.405135]}},{"type":"Feature","properties":{"resourceCoords":[1530.0,1912.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-86.950158,33.403961]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Birmingham, Alabama | 1891 | sanborn00015_003 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.07"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T22:00:25Z","modified":"2026-10-18T22:00:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0008","type":"ImageService3","width":1612,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1611.0,64.4 1611.0,100.5 1483.7,125.6 1572.7,632.3 1508.5,1781.2 801.4,1883.2 92.0,1848.8 22.1,1236.8 111.8,147.1 14.9,112.8 15.6,64.2 15.6,60.5 835.2,68.6 1611.0,64.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974bm:g3974bm_g000151891:00015_1891-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95173220219169,33.402151269168215]}},{"type":"Feature","properties":{"resourceCoords":[1612.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.95056638518606,33.40357832593597]}},{"type":"Feature","properties":{"resourceCoords":[1612.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94851409991378,33.40239330094219]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-86.94967991691941,33.400966244174434]}}]}}]}