{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn07581_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Clairton, Pennsylvania | 1924 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"32"},{"label":"placed","value":"26"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef-snap 13, georef 10, georef-street 2, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 12 panels"},{"label":"unplaced pages","value":"p19__2 (tier 1, 40.28490,-79.88147 +/-116m); p20__1 (tier 1, 40.30958,-79.89312 +/-255m); p20__2 (tier 1, 40.31665,-79.89770 +/-174m); p21__2 (tier 1, 40.30790,-79.89329 +/-100m); p24__2 (tier 1, 40.30907,-79.88914 +/-146m); p27 (tier 1, 40.30513,-79.88600 +/-254m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0010__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p10 [1]","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.89"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2317.2"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"5334.8"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0010__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"694.0,1821.0 904.5,1821.6 1107.7,1815.1 1576.9,1812.5 1572.2,1612.0 1579.0,1581.1 1552.8,1569.2 1612.0,1389.4 1612.0,1370.9 936.1,1127.4 935.1,1130.5 170.4,833.1 166.0,862.0 66.5,916.7 44.9,1012.5 1.0,1017.5 1.0,1043.2 64.5,1398.8 1.0,1423.3 1.0,1829.4 222.9,1826.7 694.0,1821.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0010__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[869.0,1320.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8821772,40.2968846]}},{"type":"Feature","properties":{"resourceCoords":[694.0,1821.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8828783,40.2960651]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0010__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p10 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.29"},{"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":"4634.0"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0010__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"285.4,443.2 553.5,563.8 542.5,595.3 1261.2,914.1 1270.8,918.3 1440.9,551.0 1510.2,555.4 1607.8,182.2 1210.7,52.7 238.3,88.8 96.3,165.5 27.6,367.7 1.0,363.4 1.0,363.6 148.0,427.1 285.4,443.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0010__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.88793240014185,40.29758115833612]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.88412045023941,40.298143831602076]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1158.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.88359407673252,40.296040016442305]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1158.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.88740602663496,40.29547734317636]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.0,1857.2 1612.0,1863.0 1413.2,1861.8 1413.2,1845.8 1171.2,1845.0 1171.3,1860.5 940.4,1859.2 940.4,1851.6 457.9,1853.2 210.8,1846.6 27.6,1853.8 65.0,173.2 498.9,29.8 855.3,33.7 981.6,365.9 1181.3,347.6 1252.4,390.8 1302.4,658.4 1393.0,719.5 1521.5,688.2 1576.8,1847.0 1612.0,1850.2 1612.0,1857.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[685.0,584.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.89185147849551,40.29542231832607]}},{"type":"Feature","properties":{"resourceCoords":[450.0,584.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.89198532488575,40.29500314754532]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p12","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"14.2,508.8 12.4,749.9 27.8,749.8 25.6,980.0 18.0,980.0 17.6,1460.7 10.1,1707.0 16.4,1889.5 99.7,1891.7 104.0,1909.9 223.8,1907.3 796.0,1905.7 1588.9,1899.5 1590.2,1702.5 1587.4,1460.7 1601.3,1460.5 1600.9,980.0 1585.5,980.0 1580.8,29.1 797.0,33.4 794.2,1.0 497.9,1.0 369.7,41.9 198.9,44.5 41.9,76.0 19.5,309.6 19.4,310.6 32.2,310.7 30.2,508.7 14.2,508.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[797.0,747.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8867809,40.2954107]}},{"type":"Feature","properties":{"resourceCoords":[797.0,1703.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.887318,40.2936978]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"199.0,31.9 774.5,31.8 1572.2,27.6 1572.6,488.4 1575.9,731.2 1572.5,1224.7 1576.7,1473.0 1578.5,1678.3 1567.1,1903.3 1557.8,1903.3 1556.6,1867.9 1094.3,1833.4 388.0,1886.9 96.0,1804.6 51.4,1103.7 64.9,744.8 140.6,552.8 110.8,363.1 43.7,303.2 109.8,166.5 78.5,34.2 199.0,31.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1558.0,737.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88599327269874,40.29174793900849]}},{"type":"Feature","properties":{"resourceCoords":[1558.0,49.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88561308865995,40.29297419190367]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p14","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"78.2,1155.9 78.2,734.9 67.4,19.8 317.4,16.2 814.1,21.1 1058.6,18.5 1522.5,19.4 1514.3,735.9 1514.8,1151.7 1502.8,1359.8 1490.2,1417.2 1490.0,1622.8 1612.0,1622.7 1612.0,1626.0 1612.0,1630.3 1439.0,1652.5 1433.6,1679.1 1416.1,1649.1 1071.2,1847.1 1066.0,1836.3 556.9,1880.1 315.8,1877.0 315.8,1881.1 75.7,1908.9 75.7,1898.4 50.4,1912.0 48.3,1912.0 41.9,1872.5 75.8,1872.2 78.2,1155.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[814.0,735.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8842901,40.2914552]}},{"type":"Feature","properties":{"resourceCoords":[1055.0,735.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8841594,40.2918822]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.0,1414.2 1.0,1450.5 401.7,1452.3 400.8,1464.4 867.6,1684.1 1076.7,1809.0 1078.7,1805.5 1302.5,1902.8 1297.2,1912.0 1333.8,1912.0 1418.7,1745.3 1485.3,1757.8 1570.6,1478.6 1612.0,1478.7 1612.0,1460.6 1550.8,1460.0 1508.4,1460.6 1506.9,1224.2 1509.2,1006.1 1518.7,594.8 1516.5,381.4 1515.0,237.6 181.0,103.9 178.7,182.7 176.6,449.3 198.3,994.5 198.4,1099.8 169.9,1203.0 100.2,1302.2 1.0,1414.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1067.0,1014.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88011820217949,40.290534923564365]}},{"type":"Feature","properties":{"resourceCoords":[605.0,1452.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88142638216242,40.291100599094634]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.25"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2.8,389.1 51.0,358.9 139.7,313.1 156.7,306.1 253.5,266.8 270.3,261.9 276.9,283.1 1612.0,26.7 1612.0,38.5 1459.8,89.7 1529.6,566.9 1519.0,1693.4 1564.8,1866.3 1542.2,1850.1 740.2,1375.7 585.2,1475.4 2.8,389.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.8784013227129,40.29324771136694]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.87459345405951,40.29236082772618]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.87596274389216,40.28889174684412]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.87977061254556,40.28977863048488]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1118.7,29.6 888.9,35.1 443.8,226.9 339.3,372.5 143.2,416.6 22.0,657.5 1.0,662.3 1.0,943.0 101.6,1095.5 220.1,1284.1 230.9,1547.2 219.5,1856.8 687.0,1855.0 668.5,1801.4 1031.8,1788.3 1120.0,1875.3 1511.6,1886.3 1512.8,1912.0 1546.9,1912.0 1555.1,1193.9 1558.4,771.3 1553.3,53.4 1345.8,53.0 1118.6,39.0 1118.7,29.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[230.0,1539.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88360293270837,40.2874971045936]}},{"type":"Feature","properties":{"resourceCoords":[1538.0,1210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88368310661103,40.28994090151602]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"102.3,78.1 276.0,192.1 324.5,127.7 998.0,93.3 1148.6,123.3 1186.3,220.8 1296.6,263.1 1421.5,267.5 1486.9,189.8 1562.7,218.8 1562.5,250.4 1505.5,244.4 1396.9,321.4 1356.4,416.6 1383.2,656.2 1343.0,822.7 1365.9,886.9 1331.6,1027.9 1279.9,1059.5 1232.3,1183.7 1279.0,1237.2 1226.3,1292.1 1177.4,1419.7 1190.5,1468.2 1090.8,1501.1 947.1,1473.7 822.6,1829.3 770.9,1809.5 607.7,1853.7 502.6,1797.6 515.0,1466.2 463.2,1292.1 449.7,1018.0 138.1,902.5 129.0,792.2 56.7,764.5 133.4,649.3 133.8,557.8 136.7,447.3 204.6,335.7 294.4,211.0 100.9,83.2 102.3,78.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[931.0,663.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88380153267995,40.2845891874497]}},{"type":"Feature","properties":{"resourceCoords":[931.0,341.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88236147938989,40.2850104047537]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0019__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p19 [1]","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.90"},{"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":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0019__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"160.5,1877.8 160.8,1895.7 161.8,1895.6 161.5,1877.8 355.9,1876.1 350.2,1892.9 1574.2,1875.5 1531.1,928.3 941.2,932.9 940.9,932.9 940.9,932.9 936.1,919.0 934.2,604.2 1126.7,199.6 1111.5,118.6 888.0,46.0 861.2,56.5 1.0,482.8 1.0,672.8 43.9,676.4 47.9,817.8 53.8,1027.6 51.5,1432.4 53.0,1647.0 58.6,1879.6 100.3,1878.3 160.5,1877.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0019__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1328.0,1326.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8787066,40.2875834]}},{"type":"Feature","properties":{"resourceCoords":[53.0,1647.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8802895,40.2896664]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1338.5,1899.7 1134.0,1888.0 725.4,1888.9 21.2,1881.5 23.4,1685.6 21.7,1444.8 35.5,1444.8 37.3,966.6 21.9,966.5 21.5,20.3 253.8,20.2 723.0,20.1 932.7,23.2 1135.2,19.1 1602.4,22.0 1602.0,257.7 1601.5,493.3 1604.4,974.4 1596.0,1445.6 1596.7,1791.1 1596.7,1792.1 1596.9,1912.0 1532.9,1912.0 1395.0,1912.0 1338.5,1899.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[930.0,1451.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88318198322338,40.29339844553657]}},{"type":"Feature","properties":{"resourceCoords":[743.0,34.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88283886301785,40.29603163792446]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0021__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p21 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.85"},{"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":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0021__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"654.2,476.3 675.5,474.9 1042.0,489.1 1225.5,487.2 671.0,1.0 630.3,1.0 632.5,35.9 163.6,144.3 120.0,257.0 104.0,1787.1 213.6,1851.0 390.8,1835.1 391.1,1806.2 507.2,1808.9 615.5,1811.5 654.2,476.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0021__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[640.0,1812.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8923654,40.3072349]}},{"type":"Feature","properties":{"resourceCoords":[123.0,472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8914588,40.3098129]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p22","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"176.3,17.5 21.9,403.6 55.4,1628.2 162.9,1771.5 534.2,1730.0 785.8,1796.8 1231.1,1707.7 1384.3,1790.5 1406.0,1870.8 1527.1,1872.6 1480.7,1764.5 1506.0,1513.0 1572.1,1464.2 1592.5,1207.2 1612.0,1189.9 1552.5,1037.7 1571.2,799.8 1570.8,334.4 1574.4,106.3 818.4,106.0 818.6,116.2 209.9,72.0 203.1,1.0 168.8,1.0 176.3,17.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1027.0,1258.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.89332011490308,40.30408751372639]}},{"type":"Feature","properties":{"resourceCoords":[1551.0,576.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.89131154852114,40.30438036149707]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p23","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"101.7,1681.8 135.9,1685.0 136.2,1756.8 733.9,1856.2 734.6,1846.0 1443.4,1912.0 1449.1,1912.0 1482.2,1912.0 1497.2,1688.6 1517.7,1457.1 1548.7,999.6 1567.4,648.0 1567.5,528.0 1578.3,29.2 857.1,27.4 538.5,32.0 165.6,19.2 143.8,20.7 110.1,1379.3 1.0,1377.2 1.0,1396.0 101.7,1681.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[142.0,1387.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.89236226508244,40.307216784623066]}},{"type":"Feature","properties":{"resourceCoords":[1540.0,528.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88844613844061,40.30696704092911]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0024__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p24 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.37"},{"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":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0024__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0024","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1567.0,1662.0 1449.1,1499.3 1349.8,1489.4 1328.5,1458.1 1354.5,1430.4 1271.0,1390.0 1075.7,1383.8 1042.2,1489.7 984.5,1485.3 958.0,1379.5 955.8,1379.4 955.7,1370.5 876.3,1053.4 793.7,1039.6 770.5,892.4 848.0,809.9 775.8,606.8 867.0,441.6 818.1,258.4 587.5,113.7 581.5,54.4 342.4,25.0 184.9,46.4 125.5,116.1 40.2,404.3 90.4,1358.0 130.7,1358.4 692.1,1861.0 824.3,1861.0 1546.8,1873.4 1567.0,1662.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0024__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[859.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8889853,40.308406]}},{"type":"Feature","properties":{"resourceCoords":[505.0,1861.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.889674,40.3087808]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p25","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"371.0,1517.0 257.2,1070.6 205.0,851.0 143.6,632.7 85.6,408.3 653.2,265.9 675.2,368.0 1316.0,180.4 1321.4,196.3 1437.0,160.4 1427.5,129.7 1495.6,182.1 1414.6,367.3 1549.5,929.9 1540.8,1848.9 998.1,1783.7 881.3,1838.0 577.5,1774.6 505.2,1881.2 502.6,1871.0 411.1,1749.8 371.0,1517.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[205.0,851.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8905279,40.3049887]}},{"type":"Feature","properties":{"resourceCoords":[371.0,1517.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8916292,40.3040528]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p26","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"250.6,1287.9 254.9,934.4 250.1,814.0 240.3,313.4 248.7,100.8 792.2,82.0 1173.3,213.7 1460.4,145.2 1520.7,315.4 1520.5,1750.0 1612.0,1879.5 1612.0,1912.0 1490.1,1912.0 1489.7,1895.2 817.4,1884.7 826.6,1780.0 238.3,1748.0 250.6,1287.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[562.0,1081.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88821041995502,40.306203370440514]}},{"type":"Feature","properties":{"resourceCoords":[257.0,1760.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88979123016372,40.305586128768]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1565.1,1414.0 1575.8,1413.0 1583.0,1412.3 1585.5,1435.2 1586.5,1435.2 1573.3,1313.4 1553.2,491.2 1590.4,471.0 1589.3,402.4 1586.6,382.6 926.8,42.1 918.3,96.9 710.5,448.4 602.0,393.3 234.7,346.1 171.1,295.2 165.6,337.3 106.0,821.5 36.6,1294.2 1.0,1574.7 1.0,1817.8 166.9,1873.9 283.8,1899.3 388.6,1885.8 484.3,1845.3 971.7,1616.9 1214.9,1516.7 1342.2,1467.5 1440.9,1438.5 1565.1,1414.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[840.0,521.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.87950286238622,40.29438168252081]}},{"type":"Feature","properties":{"resourceCoords":[475.0,1360.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.88057696819494,40.29292554823633]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p4","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.60"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1391.6,1912.0 1268.8,1912.0 448.9,1843.2 432.9,1804.0 364.6,1797.6 167.8,1803.3 170.1,1368.6 168.1,944.2 175.5,499.1 95.0,500.5 98.1,457.0 201.7,44.3 739.2,33.6 1078.4,168.7 1551.3,193.8 1559.1,522.5 1547.5,518.9 1391.6,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.8733933,40.2951429]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.8733698,40.292199]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.87794720000001,40.2921778]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.8779707,40.2951217]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p5","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"504.9,1870.2 420.2,1901.8 211.7,1692.7 113.7,1612.1 66.5,1578.3 214.9,734.2 145.3,751.1 54.4,488.4 8.6,314.7 53.2,315.8 41.0,212.4 139.5,104.4 531.4,40.6 1231.0,43.4 1545.8,117.5 1565.7,206.4 1597.2,206.3 1486.2,615.4 1482.3,658.6 1562.5,658.8 1546.7,1102.0 1540.7,1524.6 1535.0,1756.9 715.5,1827.3 648.6,1840.8 504.9,1870.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[389.0,114.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8733472,40.2969916]}},{"type":"Feature","properties":{"resourceCoords":[1547.0,397.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8739572,40.2948575]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1421.8,1317.5 1483.5,1355.2 774.0,1850.5 766.5,1805.3 634.5,1809.7 62.8,1817.5 57.4,1359.2 77.2,1244.5 66.2,784.6 46.0,777.2 69.5,152.6 588.4,202.6 995.6,308.1 1077.5,394.4 1259.5,273.1 1311.2,306.1 1224.6,398.4 1337.0,517.1 1560.9,602.0 1575.4,844.2 1612.0,882.9 1612.0,950.5 1544.9,1065.2 1421.8,1317.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[827.0,1030.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.87544867049274,40.29852988552777]}},{"type":"Feature","properties":{"resourceCoords":[74.0,1803.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8780143863904,40.29845170955164]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p7","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.24"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1572.5,768.1 1592.6,775.5 1605.0,1235.5 1585.6,1350.2 1592.4,1808.6 1593.3,1827.4 504.0,1898.3 427.2,1912.0 188.9,1912.0 134.3,1811.5 147.4,1038.8 298.8,863.6 138.4,533.8 39.9,473.6 75.0,101.0 571.0,28.7 1517.5,30.3 1583.2,142.3 1594.0,143.3 1572.5,768.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.8778301,40.3028153]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.8750528,40.3007957]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.87819340000001,40.298283700000006]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.8809707,40.3003033]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p8","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"48.7,960.0 71.8,130.9 137.2,118.4 133.3,32.2 676.8,35.8 1041.1,317.8 1367.4,261.3 1509.2,167.4 1506.7,310.9 1612.0,469.8 1612.0,852.0 1493.5,1912.0 1416.2,1912.0 1289.2,1894.9 851.3,1827.4 775.8,1821.3 292.1,1731.9 49.9,1692.0 52.0,960.0 48.7,960.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[425.0,1758.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8798241,40.2969633]}},{"type":"Feature","properties":{"resourceCoords":[52.0,960.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8819078,40.2972001]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0009__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p9 [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":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0009__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"191.1,1746.0 217.7,1731.1 589.0,1675.6 595.0,1725.4 1606.9,1554.7 1482.2,1428.8 1612.0,1308.7 1612.0,1275.9 1005.1,749.6 948.6,711.0 826.8,627.9 744.6,588.9 749.4,291.9 738.9,164.8 723.4,61.9 591.8,64.5 22.2,65.0 13.5,84.2 12.5,84.2 24.8,160.3 28.3,288.8 31.6,732.5 37.7,808.0 26.8,1300.4 26.1,1546.2 64.7,1751.9 93.7,1749.7 102.8,1780.3 109.3,1791.4 191.1,1746.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0009__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[50.0,1184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.87982213647919,40.296914605901364]}},{"type":"Feature","properties":{"resourceCoords":[50.0,520.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.87874605712977,40.297803256601426]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0009__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Clairton, Pennsylvania | 1924 | sanborn07581_003 p9 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.84"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3352.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3100.0"},{"label":"split_canvas_h","value":"4297.2"}],"created":"2026-10-19T13:27:15Z","modified":"2026-10-19T13:27:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0009__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"955.1,681.4 1333.0,678.2 1450.4,718.9 1612.0,334.4 1612.0,277.4 1342.2,181.8 1361.5,134.4 1006.0,1.0 877.0,1.0 880.7,193.8 882.1,438.0 883.4,638.5 955.1,681.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824cm:g3824cm_g075811924:07581_1924-0009__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1333.0,678.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8800386,40.294658]}},{"type":"Feature","properties":{"resourceCoords":[1513.0,189.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8793581,40.2954317]}}]}}]}