{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03297_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Covington, Louisiana | 1921 | mapsnap generated fit (2026-10-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-20"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"23"},{"label":"placed","value":"12"},{"label":"unplaced","value":"11"},{"label":"fit sources","value":"georef 6, georef-snap 6"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 17 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 30.48460,-90.09985 +/-200m); p2__2 (tier 1, 30.47834,-90.09597 +/-100m); p3__1 (tier 1, 30.47979,-90.09520 +/-100m); p3__5 (tier 1, 30.47858,-90.09397 +/-100m); p4__2 (tier 1, 30.48372,-90.09608 +/-147m); p7__2 (tier 1, 30.48098,-90.09775 +/-100m); p8__2 (tier 1, 30.47398,-90.10091 +/-116m); p9__1 (tier 3, 30.47345,-90.09872 +/-552m); p9__2 (tier 3, 30.47345,-90.09872 +/-552m); p9__3 (tier 3, 30.47345,-90.09872 +/-552m); p9__4 (tier 3, 30.47345,-90.09872 +/-552m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p1 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.68"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3940.8"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3711.2"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1023.0,1883.6 1434.8,1909.4 1591.3,1788.7 1525.6,1158.8 1429.0,1038.8 1147.0,1154.8 1115.4,1195.0 1115.2,1222.1 1094.2,1222.0 1004.3,1336.3 743.2,1324.8 612.1,1218.9 437.4,1325.3 170.2,1317.9 137.3,1339.6 135.1,1566.2 142.7,1554.6 397.5,1622.7 649.9,1615.3 649.8,1581.5 742.4,1580.6 819.1,1579.8 872.5,1627.8 999.4,1627.8 1015.0,1627.8 1015.0,1756.1 1022.7,1763.0 1023.0,1883.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[135.0,1576.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.098075,30.482524]}},{"type":"Feature","properties":{"resourceCoords":[1201.0,1576.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.0961669,30.4814397]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p1 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3920.0"},{"label":"split_canvas_w","value":"4468.8"},{"label":"split_canvas_h","value":"968.4"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1088.0,1186.8 1090.2,985.0 1075.4,984.9 1055.8,984.7 953.7,1051.8 841.6,986.9 72.3,990.0 72.9,1214.7 269.7,1216.1 1028.7,1221.1 1065.3,1221.1 1088.0,1186.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[575.1,1188.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.098991,30.483062]}},{"type":"Feature","properties":{"resourceCoords":[64.0,1188.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.099914,30.483585]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p1 [4]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.74"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"6512.0"},{"label":"split_canvas_w","value":"4060.0"},{"label":"split_canvas_h","value":"1140.0"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"930.1,1907.3 998.1,1853.4 984.4,1637.7 714.6,1661.5 722.5,1751.5 344.9,1639.5 125.0,1751.2 27.0,1877.0 67.0,1911.0 930.1,1907.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0001__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1628.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.0988963066661,30.484800292113366]}},{"type":"Feature","properties":{"resourceCoords":[1015.0,1628.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.09706101491236,30.483746596909654]}},{"type":"Feature","properties":{"resourceCoords":[1015.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.09740410455514,30.48330220090656]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.09923939630889,30.484355896110273]}},{"type":"Feature","properties":{"resourceCoords":[986.0,1876.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.097412,30.48339]}},{"type":"Feature","properties":{"resourceCoords":[986.0,1876.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.097412,30.48339]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p2 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"982.5,1888.3 1287.1,1885.4 1573.6,1877.4 1582.7,1584.2 1580.4,1270.5 1581.8,978.0 1580.4,686.6 1574.5,82.5 1574.6,1.0 1525.3,1.0 1341.0,69.4 1222.5,38.0 1228.5,1.0 1101.1,1.0 1010.1,81.5 970.7,82.0 971.4,115.8 444.3,581.6 426.6,605.4 426.6,664.9 426.6,664.9 381.7,665.6 245.4,793.5 177.5,864.1 83.6,962.2 1.0,1232.0 1.0,1299.6 38.7,1310.3 56.8,1872.1 1.0,1873.6 1.0,1887.3 982.5,1888.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[391.0,1281.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.09717254970015,30.47640787271991]}},{"type":"Feature","properties":{"resourceCoords":[1556.0,1281.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.09468949498581,30.476842548477336]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p3 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"126.9,1828.0 732.9,1840.4 1129.2,1843.7 1281.5,1855.2 1281.2,1813.0 1281.1,1810.3 1240.6,1805.6 1225.5,1632.6 1249.6,1379.2 1277.7,1355.5 1378.4,1355.5 1510.9,1331.1 1576.1,1197.2 1490.0,1046.0 1143.6,972.8 1101.5,683.2 1165.1,312.7 1135.2,70.1 900.5,27.8 718.5,85.3 708.4,481.9 671.0,521.2 671.0,530.6 662.0,530.7 632.4,561.9 131.6,536.6 130.6,635.3 131.6,1241.9 130.8,1534.4 126.9,1828.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1059.0,637.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.0932004529903,30.479406756348453]}},{"type":"Feature","properties":{"resourceCoords":[129.0,1232.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.09490486143567,30.47796042389653]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p3 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.35"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4902.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1550.0"},{"label":"split_canvas_h","value":"2554.0"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1260.5,104.0 1297.5,102.9 1275.3,546.9 1260.2,550.8 1260.2,586.6 1612.0,610.0 1612.0,601.7 1612.0,598.5 1550.6,514.4 1555.3,395.7 1612.0,358.4 1612.0,244.4 1604.8,237.8 1605.0,116.5 1470.5,116.3 1420.2,70.8 1347.8,71.4 1260.5,72.1 1260.5,104.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1260.5,72.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.09716,30.481992]}},{"type":"Feature","properties":{"resourceCoords":[1260.5,608.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.0978277,30.4811157]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p3 [4]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.53"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4902.0"},{"label":"split_canvas_y","value":"2554.0"},{"label":"split_canvas_w","value":"1550.0"},{"label":"split_canvas_h","value":"1240.0"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1508.6,947.5 1523.1,947.5 1534.7,947.5 1569.1,671.8 1528.8,671.8 1404.6,702.7 1297.5,643.6 1234.8,718.9 1266.2,939.0 1308.1,937.4 1293.0,861.3 1490.6,861.5 1508.6,947.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0003__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1225.5,638.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.09878727488103,30.48172716191439]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,638.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.09808078873743,30.48133081209436]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,948.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.09844800543478,30.480844046549226]}},{"type":"Feature","properties":{"resourceCoords":[1225.5,948.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-90.09915449157837,30.481240396369255]}},{"type":"Feature","properties":{"resourceCoords":[1261.5,672.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.098762,30.481637]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p4 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"48.8,1622.8 55.9,1853.0 63.4,1857.5 295.9,1882.2 933.0,1889.9 987.0,1618.4 1007.1,1620.7 1007.3,1595.5 1007.7,1542.8 985.3,1521.0 1008.1,1497.9 1010.0,1272.5 1010.0,1272.5 1010.0,1272.5 1230.3,1272.5 1287.8,1214.2 1325.7,1250.4 1571.6,910.4 1558.3,897.3 1612.0,767.0 1612.0,693.1 1574.3,680.6 1530.7,77.8 1330.5,26.7 665.0,43.4 664.9,29.0 353.0,24.3 45.8,30.2 55.1,320.1 59.4,628.4 62.6,1622.8 48.8,1622.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1268.0,629.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.09514407146844,30.47331725952876]}},{"type":"Feature","properties":{"resourceCoords":[73.0,629.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.09564452233451,30.475488069686268]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"660.4,80.4 1054.4,80.8 1206.0,91.1 1205.3,46.5 1545.2,83.0 1588.5,194.4 1583.8,1835.5 1366.6,1893.9 63.5,1884.8 47.1,1912.0 34.6,1288.8 48.8,1288.8 55.0,981.2 50.6,678.2 60.0,385.5 57.9,72.5 660.4,80.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[669.0,672.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.0930762081884,30.475997020882975]}},{"type":"Feature","properties":{"resourceCoords":[79.0,74.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.094596267398,30.476876092614113]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"29.1,126.7 1.0,154.1 1.0,217.4 15.1,235.2 48.2,1882.6 1573.1,1877.6 1596.7,1367.3 1497.1,1177.3 1490.6,395.5 1548.2,189.4 1452.6,32.1 1103.6,25.2 1091.5,1.0 1031.4,1.0 884.0,61.8 884.0,80.7 465.1,146.4 464.1,93.5 381.4,93.8 289.2,1.0 157.8,1.0 61.6,95.0 28.8,95.1 29.1,126.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[65.0,988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.09812830178346,30.47210843976321]}},{"type":"Feature","properties":{"resourceCoords":[1346.0,988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.0958583436973,30.470810207145924]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0007__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p7 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.92"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1522.0,771.1 1497.3,747.6 1525.0,719.0 1532.1,595.0 1612.0,514.5 1612.0,490.8 1529.7,376.9 1535.4,111.0 1378.2,58.9 1287.6,93.2 1261.7,276.5 1078.3,276.8 1077.5,272.6 1069.9,272.5 1070.2,237.0 1027.7,31.1 675.3,91.9 654.5,64.0 654.0,63.2 654.1,75.2 282.9,53.7 282.6,15.9 36.9,80.3 77.6,79.7 46.4,358.1 20.1,358.5 53.4,507.6 12.3,1530.8 47.8,1764.1 286.0,1759.0 841.9,1759.1 841.6,1883.0 1380.8,1870.6 1494.1,1871.7 1491.8,1772.9 1497.0,1584.3 1528.4,1551.7 1485.7,1509.3 1481.2,1479.7 1522.0,771.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[286.0,631.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.098487,30.480257]}},{"type":"Feature","properties":{"resourceCoords":[286.0,1759.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.099838,30.478515]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Covington, Louisiana | 1921 | sanborn03297_004 p8 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"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":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-20T03:26:54Z","modified":"2026-10-20T03:26:54Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"25.0,39.5 68.2,312.1 25.2,1808.4 118.1,1894.0 797.8,1878.8 820.8,1190.9 826.9,1184.9 1297.3,1180.8 1552.6,1175.4 1612.0,547.0 1612.0,534.6 1470.0,273.8 1465.6,137.4 1352.7,137.1 816.0,152.8 815.5,29.4 262.2,32.9 25.0,39.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd401m:g4014m:g4014cm:g032971921:03297_1921-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[820.0,593.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.09951834932647,30.47706595118982]}},{"type":"Feature","properties":{"resourceCoords":[265.0,1717.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-90.10187795712186,30.47591053164887]}}]}}]}