{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn07763_007.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Leechburg, Pennsylvania | 1927 | 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":"18"},{"label":"placed","value":"9"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 5, georef-snap 3, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"5 sheet(s) cut into 10 panels"},{"label":"unplaced pages","value":"p10__1 (tier 1, 40.63386,-79.60674 +/-100m); p11__1 (tier 4, 40.63001,-79.60327 +/-539m); p11__2 (tier 4, 40.63001,-79.60327 +/-539m); p12__1 (tier 1, 40.62856,-79.60349 +/-257m); p12__2 (tier 4, 40.63001,-79.60327 +/-539m); p13 (tier 4, 40.63001,-79.60327 +/-539m); p1__1 (tier 1, 40.63049,-79.60901 +/-100m); p9__1 (tier 1, 40.62809,-79.60066 +/-166m); p9__2 (tier 1, 40.62845,-79.60084 +/-212m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0010__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Leechburg, Pennsylvania | 1927 | sanborn07763_007 p10 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.44"},{"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":"2026-10-20T00:38:50Z","modified":"2026-10-20T00:38:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0010__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"973.1,1831.8 1281.8,1874.2 1306.5,1912.0 1556.8,1912.0 1482.0,1804.3 1525.4,1749.8 1452.3,1570.8 1509.8,1524.5 1510.3,1323.6 1442.4,1219.7 1578.9,703.1 1397.6,385.6 1461.0,187.1 1383.3,54.8 300.7,413.8 138.9,327.6 81.1,400.3 386.4,1229.9 647.3,1521.5 823.8,1563.1 973.1,1831.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0010__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":[-79.6074812911347,40.636166798584206]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.60421671530958,40.63453564634227]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.60674803789222,40.63157671444685]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-79.61001261371736,40.633207866688785]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Leechburg, Pennsylvania | 1927 | sanborn07763_007 p2","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T00:38:50Z","modified":"2026-10-20T00:38:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"176.1,1826.4 138.2,1573.9 43.0,1440.7 52.9,1111.0 223.1,270.6 383.0,205.8 698.1,197.0 1238.2,60.4 1459.0,77.2 1475.2,63.5 1488.0,1294.0 1488.0,1811.0 988.4,1812.7 488.6,1809.7 488.3,1849.1 176.1,1826.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1488.0,1294.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.6061187,40.6282241]}},{"type":"Feature","properties":{"resourceCoords":[1488.0,1811.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.6049637,40.627912]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Leechburg, Pennsylvania | 1927 | sanborn07763_007 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T00:38:50Z","modified":"2026-10-20T00:38:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"159.8,47.2 609.5,33.1 767.0,137.9 922.1,71.1 1366.5,43.2 1541.1,110.2 1612.0,236.3 1612.0,465.4 1538.6,495.6 1591.8,655.9 1588.6,1080.7 1612.0,1124.8 1612.0,1257.5 1611.2,1357.8 1612.0,1385.2 1612.0,1872.5 1390.3,1874.8 682.5,1881.1 54.4,1893.5 43.5,1387.8 5.3,184.4 159.8,47.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[438.0,963.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.60674108417231,40.62918009645796]}},{"type":"Feature","properties":{"resourceCoords":[1354.0,1389.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.60498657239279,40.63047641454369]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Leechburg, Pennsylvania | 1927 | sanborn07763_007 p4","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T00:38:50Z","modified":"2026-10-20T00:38:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"397.1,118.8 398.2,80.2 886.6,93.4 1375.0,102.0 1366.3,520.8 1362.8,883.5 1355.7,920.5 1577.1,924.9 1573.0,1747.0 1333.5,1747.0 1100.4,1739.3 1103.2,1764.1 1097.3,1898.4 1068.9,1868.0 1013.6,1907.5 1016.2,1857.0 664.0,1889.2 240.0,1752.2 59.5,1348.9 25.1,688.4 99.7,146.2 92.4,90.2 397.1,118.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1573.0,1747.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.601026,40.6273021]}},{"type":"Feature","properties":{"resourceCoords":[1375.0,102.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.6049637,40.627912]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Leechburg, Pennsylvania | 1927 | sanborn07763_007 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T00:38:50Z","modified":"2026-10-20T00:38:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"683.5,132.9 1389.3,140.2 1433.5,140.5 1390.3,250.6 1395.9,848.8 1441.4,867.7 1612.0,938.8 1612.0,1463.1 1519.2,1687.7 1493.7,1764.5 1432.5,1757.0 1206.8,1758.6 751.4,1765.7 514.0,1764.6 292.7,1769.8 277.7,949.5 56.8,950.3 63.0,913.1 58.1,551.2 57.0,133.2 683.5,132.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1196.0,1379.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.60117884014753,40.62911398122305]}},{"type":"Feature","properties":{"resourceCoords":[289.0,1780.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.60100556360385,40.62728931723904]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Leechburg, Pennsylvania | 1927 | sanborn07763_007 p6","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"29"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T00:38:50Z","modified":"2026-10-20T00:38:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"9.4,691.0 165.4,1114.5 1.0,1177.5 1.0,1298.8 224.1,1851.6 273.4,1852.6 655.1,1858.5 881.0,1853.0 1337.7,1863.4 1567.0,1863.8 1576.7,1247.8 1558.7,1248.1 1562.7,1020.1 1554.6,803.4 1567.2,803.3 1578.8,16.4 1589.0,12.2 1019.7,85.1 619.6,16.8 308.3,16.6 85.8,84.8 57.6,41.4 12.1,334.1 1.0,343.7 1.0,670.0 9.4,691.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[657.0,1019.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.603058,40.6314016]}},{"type":"Feature","properties":{"resourceCoords":[881.0,1853.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.6011757,40.6307008]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Leechburg, Pennsylvania | 1927 | sanborn07763_007 p7","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T00:38:50Z","modified":"2026-10-20T00:38:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1002.6,1858.7 536.6,1868.4 65.0,1873.5 72.1,1258.7 54.1,1259.1 57.1,1031.6 48.1,815.3 60.6,815.2 68.8,29.9 79.0,25.7 148.1,16.5 1050.0,78.2 1472.5,27.1 1557.2,79.0 1592.3,262.4 1550.5,1507.2 1589.7,1872.0 1002.6,1889.3 1002.6,1858.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[760.0,1029.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.600482,40.633633]}},{"type":"Feature","properties":{"resourceCoords":[760.0,1863.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.5989602,40.6326144]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Leechburg, Pennsylvania | 1927 | sanborn07763_007 p8","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"33"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-20T00:38:50Z","modified":"2026-10-20T00:38:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"79.1,1840.9 78.6,1912.0 389.0,1912.0 478.2,1876.7 560.3,1844.1 804.8,1847.8 885.2,1843.2 896.3,1885.7 1612.0,1853.1 1612.0,1817.5 1569.0,1810.4 1610.8,1318.0 1435.5,589.8 1508.3,419.1 1489.3,232.2 1584.4,197.1 1310.8,40.3 935.5,21.5 577.6,132.7 419.8,19.5 99.4,29.9 98.5,1.0 68.0,1.0 77.2,464.4 81.6,934.2 81.9,1162.2 73.0,1616.3 79.1,1840.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[878.0,927.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.598588,40.6306743]}},{"type":"Feature","properties":{"resourceCoords":[878.0,1616.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.5996994,40.6297157]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0009__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Leechburg, Pennsylvania | 1927 | sanborn07763_007 p9 [3]","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":"1865.6"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"5786.4"}],"created":"2026-10-20T00:38:50Z","modified":"2026-10-20T00:38:50Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0009__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"192.9,1334.4 1.0,1437.8 1.0,1475.5 63.2,1587.2 22.9,1575.1 1.0,1645.3 1.0,1650.3 120.7,1882.7 1305.8,1908.5 1353.0,1821.5 1571.1,1776.3 1587.4,1351.5 1551.2,1356.1 1426.5,636.3 1410.0,642.9 1210.1,754.9 808.6,984.1 597.0,1099.5 402.7,1212.5 192.9,1334.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824lm:g3824lm_g077631927:07763_1927-0009__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[809.0,986.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.60065499568414,40.62809880113]}},{"type":"Feature","properties":{"resourceCoords":[1451.0,632.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.60006320049119,40.62935289417791]}}]}}]}