{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00033_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Demopolis, Alabama | 1924 | 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":"16"},{"label":"placed","value":"7"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 3, georef-snap 3, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"3 sheet(s) cut into 7 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 32.51324,-87.83045 +/-346m); p1__4 (tier 1, 32.51177,-87.83059 +/-100m); p7__1 (tier 4, 32.51646,-87.83771 +/-853m); p7__2 (tier 4, 32.51646,-87.83771 +/-853m); p8__1 (tier 3, 32.52318,-87.83238 +/-1108m); p8__2 (tier 3, 32.52318,-87.83238 +/-1108m); p8__3 (tier 3, 32.52318,-87.83238 +/-1108m); p9__1 (tier 1, 32.51658,-87.84570 +/-438m); p9__2 (tier 2, 32.51617,-87.84519 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Demopolis, Alabama | 1924 | sanborn00033_006 p1 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.17"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3629.6"},{"label":"split_canvas_w","value":"6916.0"},{"label":"split_canvas_h","value":"4530.4"}],"created":"2026-10-18T19:17:25Z","modified":"2026-10-18T19:17:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0001","type":"ImageService3","width":1729,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"623.6,1976.0 694.9,1934.3 713.0,1931.2 797.5,1935.0 857.0,1941.2 1005.0,1948.0 1283.0,1948.0 1283.7,1943.5 1628.5,1945.1 1633.5,1660.5 1608.8,1659.7 1608.7,1364.6 1598.8,1364.8 1645.6,1019.5 1574.8,947.5 789.5,948.4 694.5,975.0 694.6,1100.5 653.4,1149.4 653.4,1149.5 400.0,1149.5 282.5,1149.5 189.2,1150.3 208.2,1161.7 174.0,1188.4 109.4,1188.4 121.5,1906.6 151.9,1956.0 406.7,1993.7 623.3,1970.7 623.6,1976.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1005.0,1948.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.843624,32.516354]}},{"type":"Feature","properties":{"resourceCoords":[1283.0,1948.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.842454,32.516353]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Demopolis, Alabama | 1924 | sanborn00033_006 p1 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.42"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3610.4"},{"label":"split_canvas_w","value":"1600.0"},{"label":"split_canvas_h","value":"987.6"}],"created":"2026-10-18T19:17:25Z","modified":"2026-10-18T19:17:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0001","type":"ImageService3","width":1729,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"340.4,938.9 57.1,917.5 50.3,1137.7 110.7,1111.3 386.2,1106.7 340.4,938.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,902.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.83070662012526,32.51305129952261]}},{"type":"Feature","properties":{"resourceCoords":[400.0,902.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.82901160606428,32.51304662240489]}},{"type":"Feature","properties":{"resourceCoords":[400.0,1149.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.82901502072613,32.512154165442965]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1149.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-87.8307100347871,32.51215884256068]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Demopolis, Alabama | 1924 | sanborn00033_006 p2","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T19:17:25Z","modified":"2026-10-18T19:17:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0002","type":"ImageService3","width":1729,"height":2046},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"123.3,1793.0 128.3,1247.6 80.9,1246.4 76.0,681.0 56.9,681.5 128.9,113.2 553.0,120.8 552.6,96.6 1098.6,105.0 1146.0,102.9 1685.3,99.3 1688.2,99.3 1683.2,665.6 1677.9,714.4 1674.0,1186.4 1686.4,1307.7 1682.7,1775.0 1541.2,1782.8 1151.7,1783.7 1094.5,1786.8 671.9,1794.9 554.3,1791.3 123.3,1793.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1116.0,1253.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.838808,32.517345]}},{"type":"Feature","properties":{"resourceCoords":[552.0,1253.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.840047,32.517355]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Demopolis, Alabama | 1924 | sanborn00033_006 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T19:17:25Z","modified":"2026-10-18T19:17:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0003","type":"ImageService3","width":1729,"height":2040},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"66.2,1360.8 52.3,1241.1 49.8,774.1 54.4,725.8 51.5,165.5 144.0,163.5 593.5,153.9 1125.3,146.3 1525.3,145.7 1524.7,105.1 1610.0,106.8 1624.3,107.1 1648.5,214.7 1645.9,1648.7 1680.3,1650.1 1680.9,1708.2 1143.7,1811.9 1144.1,1786.4 613.5,1801.4 613.6,1807.3 483.9,1807.7 69.0,1823.2 66.2,1360.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1133.0,1289.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.83518413483397,32.51732154386338]}},{"type":"Feature","properties":{"resourceCoords":[94.0,1289.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.83749074121687,32.51736694390742]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Demopolis, Alabama | 1924 | sanborn00033_006 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T19:17:25Z","modified":"2026-10-18T19:17:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0004","type":"ImageService3","width":1742,"height":2045},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"142.8,1923.1 72.7,1853.2 74.2,1853.2 104.7,928.1 149.9,636.8 197.6,565.4 195.7,401.3 154.3,368.2 142.0,271.4 74.8,268.5 77.3,152.8 200.2,140.2 229.6,102.7 370.8,63.8 672.8,56.6 770.0,85.3 1150.4,88.5 1274.4,176.5 1453.1,152.1 1483.3,189.1 1587.8,187.9 1618.2,239.7 1662.9,239.2 1659.5,601.0 1637.2,604.9 1638.8,746.6 1661.2,750.1 1663.6,1939.5 1697.8,1940.6 1697.9,1961.7 1490.9,1959.5 1215.7,1960.1 983.0,1962.3 933.6,1962.8 657.5,1965.1 633.3,1966.2 353.7,1962.4 353.9,1974.8 136.8,1971.3 142.8,1923.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1473.0,1679.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.83520509140507,32.52047640827593]}},{"type":"Feature","properties":{"resourceCoords":[354.0,1387.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.83999198231733,32.52157882956077]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Demopolis, Alabama | 1924 | sanborn00033_006 p5","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T19:17:25Z","modified":"2026-10-18T19:17:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0005","type":"ImageService3","width":1724,"height":2034},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.3,78.8 149.0,75.6 232.1,78.7 290.5,84.2 436.0,89.8 709.1,87.5 709.8,83.0 1269.5,80.8 1329.9,82.7 1546.7,78.6 1576.0,77.0 1588.7,77.0 1575.8,877.1 1576.3,1206.3 1594.2,1206.2 1606.3,1765.8 1611.1,1765.8 1676.8,1898.2 1657.9,1896.5 1643.6,1960.1 1569.1,1983.2 213.3,1981.1 71.1,1945.1 66.4,1907.5 51.1,1897.0 41.8,1907.3 34.5,1631.7 34.3,1583.0 51.5,1572.6 72.0,1250.4 65.0,514.8 87.0,473.5 61.6,120.4 131.3,78.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1269.0,926.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.84009,32.513305]}},{"type":"Feature","properties":{"resourceCoords":[152.0,1209.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.844886,32.512321]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Demopolis, Alabama | 1924 | sanborn00033_006 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T19:17:25Z","modified":"2026-10-18T19:17:25Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0006","type":"ImageService3","width":1741,"height":2051},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"229.4,147.3 301.6,142.6 515.6,135.5 582.5,135.6 582.5,132.6 856.2,125.9 855.9,139.1 1133.2,86.8 1133.1,56.8 1628.7,79.6 1678.1,138.1 1661.5,1981.8 528.1,1992.4 148.6,1960.8 81.9,1829.6 77.1,1829.7 59.6,1273.0 41.9,1273.3 38.2,945.8 40.8,538.9 43.3,149.5 229.4,147.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd397m:g3974m:g3974dm:g3974dm_g000331924:00033-1924-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[851.0,987.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.83527870828027,32.51326491914686]}},{"type":"Feature","properties":{"resourceCoords":[335.0,701.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-87.8374761215967,32.51433892696286]}}]}}]}