{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn07634_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Duquesne, Pennsylvania | 1901 | 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":"17"},{"label":"placed","value":"7"},{"label":"unplaced","value":"10"},{"label":"fit sources","value":"georef 4, georef-snap 3"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 12 panels"},{"label":"unplaced pages","value":"p1__1 (tier 1, 40.37698,-79.84952 +/-221m); p1__2 (tier 1, 40.37174,-79.84472 +/-223m); p1__3 (tier 1, 40.37759,-79.84592 +/-100m); p2__1 (tier 1, 40.37438,-79.84888 +/-252m); p3__1 (tier 1, 40.37411,-79.84652 +/-258m); p3__2 (tier 1, 40.36414,-79.84295 +/-100m); p4__1 (tier 1, 40.37240,-79.84950 +/-100m); p5__3 (tier 1, 40.36841,-79.84917 +/-144m); p8__1 (tier 3, 40.36336,-79.83965 +/-880m); p8__2 (tier 1, 40.37075,-79.84112 +/-102m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1901 | sanborn07634_003 p2 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.83"},{"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":"2785.6"},{"label":"split_canvas_h","value":"2392.0"}],"created":"2026-10-19T08:04:24Z","modified":"2026-10-19T08:04:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"174.4,360.9 619.2,500.6 588.7,30.4 308.2,57.7 190.7,1.0 96.2,1.0 102.2,341.9 174.4,360.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[327.2,147.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.85003193764584,40.372932291336035]}},{"type":"Feature","properties":{"resourceCoords":[551.3,147.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.84957730033082,40.37316793927198]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1901 | sanborn07634_003 p4 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.91"},{"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":"2026-10-19T08:04:24Z","modified":"2026-10-19T08:04:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"528.6,1673.7 734.4,1750.7 1040.8,1650.8 1240.2,1733.7 1289.4,1855.6 1544.1,1870.4 1554.0,1709.5 1547.2,1707.7 1562.3,1575.4 1612.0,767.1 1612.0,756.7 1546.7,80.5 109.3,27.1 35.4,135.5 132.8,678.5 37.8,869.7 92.0,1489.1 45.4,1492.7 334.1,1600.8 392.1,1617.5 392.9,1617.7 532.4,1657.7 528.6,1673.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[664.0,286.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8484787,40.3749594]}},{"type":"Feature","properties":{"resourceCoords":[443.0,1375.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8474322,40.3730646]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1901 | sanborn07634_003 p5 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"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":"0.0"},{"label":"split_canvas_w","value":"4076.0"},{"label":"split_canvas_h","value":"1546.4"}],"created":"2026-10-19T08:04:24Z","modified":"2026-10-19T08:04:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"95.3,299.9 402.6,385.2 974.7,356.5 997.9,137.8 907.9,82.8 930.7,1.0 545.6,1.0 151.3,21.4 95.3,299.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005__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":[-79.84299500313557,40.367981327725374]}},{"type":"Feature","properties":{"resourceCoords":[1019.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84366277252605,40.369808821312716]}},{"type":"Feature","properties":{"resourceCoords":[1019.0,386.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84275045187466,40.370001755160516]}},{"type":"Feature","properties":{"resourceCoords":[0.0,386.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.84208268248419,40.368174261573174]}},{"type":"Feature","properties":{"resourceCoords":[657.0,275.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8427749,40.3692972]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1901 | sanborn07634_003 p5 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3802.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2649.2"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T08:04:24Z","modified":"2026-10-19T08:04:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1406.7,1839.4 1417.4,1776.4 1494.5,1794.0 1499.3,1524.0 1585.5,1235.4 1548.8,861.4 1593.1,423.4 1538.6,104.0 1103.3,75.5 1028.2,631.7 1054.9,843.9 1077.5,844.3 1067.3,1043.7 1067.1,1272.7 1076.8,1491.3 1059.8,1703.2 1056.7,1851.8 1381.1,1751.0 1406.7,1839.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1528.1,946.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.85270605272326,40.372711830638664]}},{"type":"Feature","properties":{"resourceCoords":[1707.9,1634.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.85122808523103,40.373433841265005]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1901 | sanborn07634_003 p5 [4]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.78"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4782.0"},{"label":"split_canvas_w","value":"4068.0"},{"label":"split_canvas_h","value":"2870.0"}],"created":"2026-10-19T08:04:24Z","modified":"2026-10-19T08:04:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"36.5,1234.2 58.6,1241.3 73.6,1861.9 172.9,1898.5 255.6,1842.2 373.1,1891.5 500.4,1833.7 867.3,1866.6 859.8,1712.1 938.5,1712.2 923.0,1208.3 713.2,1215.1 496.6,1226.6 276.7,1227.3 36.5,1234.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0005__4/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[502.0,1727.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8488845,40.3682425]}},{"type":"Feature","properties":{"resourceCoords":[69.0,1231.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8502817,40.3689192]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1901 | sanborn07634_003 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:04:24Z","modified":"2026-10-19T08:04:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1295.2,1877.5 1514.3,1872.5 1526.0,1872.8 1555.4,95.5 1082.5,87.5 1006.8,89.8 855.0,87.2 638.7,70.9 415.5,81.8 181.8,82.5 1.0,74.1 1.0,74.5 34.2,88.7 107.0,173.5 33.5,618.9 137.0,1543.9 98.2,1785.2 373.0,1880.3 622.9,1878.8 851.5,1883.4 1076.9,1876.6 1295.2,1874.5 1295.2,1877.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[417.0,1613.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.85045401442687,40.36939023121349]}},{"type":"Feature","properties":{"resourceCoords":[1508.0,811.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.84853286658644,40.37141057384243]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duquesne, Pennsylvania | 1901 | sanborn07634_003 p7","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T08:04:24Z","modified":"2026-10-19T08:04:24Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"935.8,27.1 635.1,29.9 431.9,128.1 119.8,119.2 124.8,259.2 18.6,475.8 90.0,954.1 27.2,1178.2 29.8,1832.3 327.4,1882.3 324.0,1895.0 738.9,1900.1 924.7,1912.0 1108.6,1912.0 1131.1,1847.4 1571.8,1839.7 1595.1,318.4 1610.8,319.1 1611.4,307.5 1612.0,272.8 1612.0,90.3 1095.1,81.1 1099.1,1.0 939.5,1.0 935.8,27.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824dm:g3824dm_g076341901:07634_1901-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[840.0,1399.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.844601,40.3688655]}},{"type":"Feature","properties":{"resourceCoords":[1060.0,1177.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.8452892,40.3691158]}}]}}]}