{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn07832_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Monongahela City, Pennsylvania | 1918 | 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":"24"},{"label":"placed","value":"13"},{"label":"unplaced","value":"11"},{"label":"fit sources","value":"georef-snap 8, georef 5"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 14 panels"},{"label":"unplaced pages","value":"p10__1 (tier 1, 40.19356,-79.90715 +/-107m); p10__3 (tier 1, 40.19318,-79.90537 +/-100m); p10__4 (tier 1, 40.19325,-79.90733 +/-100m); p13__2 (tier 1, 40.20603,-79.94038 +/-100m); p13__3 (tier 1, 40.20643,-79.94056 +/-100m); p14__1 (tier 3, 40.20109,-79.91663 +/-706m); p14__2 (tier 3, 40.20109,-79.91663 +/-706m); p14__3 (tier 3, 40.20109,-79.91663 +/-706m); p16__2 (tier 1, 40.20268,-79.92793 +/-106m); p8__1 (tier 1, 40.19681,-79.91816 +/-255m); p8__2 (tier 2, 40.19557,-79.91644 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0010__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p10 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.07"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2234.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1582.4"},{"label":"split_canvas_h","value":"2510.4"}],"created":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0010__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"904.9,45.3 701.6,80.6 733.5,436.8 649.1,536.9 919.7,519.9 904.9,45.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0010__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[558.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.90607493331892,40.1930752024795]}},{"type":"Feature","properties":{"resourceCoords":[954.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.90599434559725,40.19343195210035]}},{"type":"Feature","properties":{"resourceCoords":[954.2,627.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.90525888540722,40.193333641093474]}},{"type":"Feature","properties":{"resourceCoords":[558.6,627.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.90533947312889,40.192976891472625]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"82.3,1838.1 984.2,1883.0 1514.0,1765.0 1574.5,175.5 1464.7,66.9 947.6,25.2 948.4,1.0 809.7,1.0 775.5,36.5 40.5,71.3 40.4,553.7 132.4,845.2 72.8,851.7 33.4,1112.3 113.7,1503.0 82.3,1838.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[253.0,1217.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.90271839394417,40.19183751500089]}},{"type":"Feature","properties":{"resourceCoords":[860.0,504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.90423392120209,40.19306288503678]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.67"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1557.6,1867.9 1019.9,1884.0 668.4,1865.7 670.5,1892.5 38.5,1860.0 28.3,217.6 311.2,100.6 561.4,114.5 788.6,25.3 1524.4,70.1 1573.5,221.3 1579.5,1810.6 1595.7,1805.5 1557.6,1867.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1064.0,930.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.94455922009112,40.207142020110865]}},{"type":"Feature","properties":{"resourceCoords":[289.0,1187.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.94436566724815,40.205688212357025]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0013__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p13 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.28"},{"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":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0013__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"926.1,1292.0 942.5,1292.0 942.5,1332.3 1031.4,1550.5 1380.0,1549.5 1463.0,1424.2 1473.0,1244.0 1577.0,1145.4 1610.7,356.0 1575.8,146.1 1450.5,63.0 1297.0,32.2 977.1,126.5 937.5,188.7 395.5,194.7 41.8,169.5 43.4,196.7 59.8,197.8 63.0,863.5 118.3,945.2 428.2,983.1 573.8,1395.3 715.0,1289.2 923.5,1285.7 926.1,1292.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0013__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[663.0,914.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.94063608601452,40.20690596043794]}},{"type":"Feature","properties":{"resourceCoords":[396.0,196.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.9423961225566,40.20669455291745]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p15","metadata":[{"label":"streets","value":"28"},{"label":"intersections","value":"49"},{"label":"confidence","value":"0.78"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1262.7,48.6 1300.5,45.0 1319.2,180.2 1381.0,369.9 1394.7,575.9 1411.1,661.8 1459.0,842.8 1531.0,1092.7 1595.0,1236.0 1586.5,1418.3 1580.5,1597.0 1577.3,1771.0 1576.4,1827.6 1294.7,1820.5 1294.4,1827.7 1019.5,1817.3 965.1,1818.0 934.4,1823.6 918.5,1834.9 889.5,1828.8 803.8,1798.9 698.8,1773.5 674.3,1858.2 594.3,1833.8 405.4,1864.0 345.9,1845.1 344.0,1848.6 328.6,1821.2 91.4,1807.8 87.8,1363.6 54.9,1312.9 84.8,1235.4 55.4,1221.7 46.6,1114.0 78.5,1009.3 45.9,828.5 73.8,778.1 19.6,505.4 38.8,78.8 70.4,35.0 259.3,62.7 426.6,29.0 787.9,24.4 875.6,57.2 1185.0,60.4 1248.2,24.6 1262.7,48.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[732.0,1659.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.9315072,40.2005138]}},{"type":"Feature","properties":{"resourceCoords":[822.0,409.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.936397,40.2029899]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0016__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p16 [1]","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"11"},{"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":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0016__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1545.5,137.0 1268.2,127.4 1267.9,134.4 997.4,121.5 943.9,121.7 913.5,126.9 897.9,137.9 869.3,131.6 785.2,101.3 682.1,75.3 657.2,158.5 578.6,133.7 392.4,161.6 334.0,142.4 332.1,145.8 388.9,248.9 343.6,320.5 365.0,397.8 272.5,453.1 209.5,623.5 139.3,696.1 159.3,863.2 89.5,906.0 79.8,996.1 97.1,1135.1 246.2,1205.5 321.5,1342.2 336.0,1537.8 370.6,1569.6 429.8,1554.0 557.4,1585.4 604.7,1563.5 670.4,1459.5 777.7,1400.3 950.7,1444.9 983.2,1427.0 1011.0,1463.3 1011.0,1369.2 1011.0,1367.9 1070.5,1242.0 1091.6,1161.3 1136.8,1172.4 1183.6,1043.4 1115.8,1025.5 1207.1,900.4 1319.9,926.3 1381.5,937.3 1394.0,940.6 1466.7,671.6 1473.7,673.7 1536.4,496.2 1542.3,250.9 1545.5,137.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0016__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1363.0,139.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.9292885,40.2022634]}},{"type":"Feature","properties":{"resourceCoords":[296.0,1181.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.9273987,40.1970426]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"118.2,1688.7 197.1,1288.2 175.8,894.0 208.9,626.2 134.8,613.9 119.4,560.7 182.6,544.4 177.4,345.3 383.9,130.2 995.2,80.1 1149.8,171.2 1493.3,128.7 1592.7,573.2 1515.6,1826.2 1522.4,1846.6 806.2,1851.0 806.0,1840.5 105.7,1861.3 118.2,1688.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[779.0,1075.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.93541465801535,40.205914374880884]}},{"type":"Feature","properties":{"resourceCoords":[432.0,1838.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.93387142054807,40.20496206151628]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p3","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"49.0,984.6 59.4,984.6 76.9,279.9 677.4,100.8 1321.2,151.3 1386.4,339.9 1490.8,369.1 1583.5,336.2 1454.5,1007.9 1437.3,1005.2 1221.8,1652.8 918.7,1691.9 412.4,1686.2 48.2,1674.2 49.0,984.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[916.0,1342.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.9317998,40.2046248]}},{"type":"Feature","properties":{"resourceCoords":[758.0,991.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.9319847,40.2053175]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p4","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1172.1,1694.3 832.8,1695.8 484.1,1691.9 128.3,1683.2 133.3,999.5 150.5,996.7 65.6,316.8 381.3,74.5 632.5,36.5 917.6,55.5 1125.5,146.0 1414.7,85.5 1548.2,151.8 1572.0,188.2 1520.3,672.2 1468.3,673.1 1478.9,962.6 1505.1,994.6 1502.4,1361.2 1508.2,1692.8 1172.1,1694.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[483.0,992.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.9296677,40.2047019]}},{"type":"Feature","properties":{"resourceCoords":[1504.0,1332.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.927977,40.2032102]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.82"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"51.3,1246.8 59.1,867.9 32.5,834.4 25.4,534.9 79.2,534.7 139.2,34.9 209.1,144.8 674.0,52.6 1057.2,77.7 1340.0,248.4 1595.2,663.5 1570.9,757.8 1507.8,1136.3 1522.6,1141.7 1483.9,1280.0 1425.7,1509.9 1363.3,1840.1 917.2,1728.5 921.1,1714.1 555.1,1592.5 52.7,1589.8 51.3,1246.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[683.0,1260.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.92676062408384,40.20258637937831]}},{"type":"Feature","properties":{"resourceCoords":[92.0,1233.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.92791816085149,40.203150933348915]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.82"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"935.5,1802.9 925.8,1710.8 652.7,1710.0 664.9,1848.8 369.2,1762.2 341.9,1533.6 321.0,1410.9 318.6,1385.2 211.4,1393.9 166.2,1070.6 148.2,841.0 140.8,701.7 125.5,701.5 65.8,333.5 58.9,239.2 92.8,267.5 807.1,138.4 926.5,204.2 1161.1,105.5 1407.2,105.7 1493.6,164.5 1497.2,329.0 1479.8,330.8 1612.0,683.5 1612.0,1019.9 1503.8,1136.2 1503.6,1628.4 1586.8,1701.6 1555.1,1750.7 1376.4,1814.9 1100.9,1788.1 935.5,1802.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[920.0,1715.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.92552089480195,40.199734920307094]}},{"type":"Feature","properties":{"resourceCoords":[521.0,710.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.92434875286791,40.20149420037453]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p7","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.16"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1414.0,61.8 1018.9,53.0 889.0,1.0 733.5,1.0 747.6,30.9 527.7,90.4 224.6,19.4 94.3,137.0 88.5,364.1 248.1,662.8 228.1,828.0 84.6,1055.8 101.8,1857.5 969.0,1867.5 1010.0,1795.0 1240.2,1721.8 1339.3,1576.8 1507.5,1483.2 1407.0,1301.2 1568.8,547.0 1556.8,147.9 1569.4,139.4 1409.0,79.2 1414.0,61.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[602.0,1860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.9193105,40.1979455]}},{"type":"Feature","properties":{"resourceCoords":[1019.0,53.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.9225807,40.2000272]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Monongahela City, Pennsylvania | 1918 | sanborn07832_006 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.34"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T11:50:07Z","modified":"2026-10-19T11:50:07Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"23.7,1578.9 80.5,1164.1 29.6,365.8 130.0,126.7 414.7,33.0 902.5,29.6 1149.7,46.7 1234.0,182.6 1407.6,195.9 1488.3,509.7 1575.3,548.3 1594.8,661.1 1521.3,1074.3 1513.5,1782.9 1394.3,1868.9 71.6,1849.1 23.7,1578.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824mm:g3824mm_g078321918:07832_1918-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[879.0,694.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.91462650747089,40.195221573224934]}},{"type":"Feature","properties":{"resourceCoords":[879.0,1876.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.91562902443344,40.193233076177876]}}]}}]}