{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn07516_007.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Beaver Falls, Pennsylvania | 1921 | 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":"48"},{"label":"placed","value":"36"},{"label":"unplaced","value":"12"},{"label":"fit sources","value":"georef 28, georef-snap 6, snap:0 1, georef-street 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"8 sheet(s) cut into 19 panels"},{"label":"unplaced pages","value":"p15__1 (tier 1, 40.75353,-80.32376 +/-216m); p28__1 (tier 1, 40.76949,-80.32218 +/-100m); p29__1 (tier 1, 40.77092,-80.32824 +/-125m); p29__2 (tier 1, 40.78465,-80.33162 +/-122m); p30 (tier 2, 40.76712,-80.31473 +/-153m); p32__1 (tier 1, 40.78634,-80.33136 +/-106m); p32__2 (tier 1, 40.78492,-80.33128 +/-210m); p34__1 (tier 1, 40.75365,-80.32185 +/-250m); p37 (tier 1, 40.73876,-80.32740 +/-258m); p6 (tier 2, 40.75889,-80.31928 +/-120m); p8__2 (tier 1, 40.75444,-80.31182 +/-100m); p8__3 (tier 1, 40.75360,-80.31183 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p10","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"566.5,1758.2 435.0,1723.2 379.6,1571.1 221.3,331.9 190.7,321.4 277.2,186.9 273.0,92.0 805.5,87.6 1363.2,83.0 1365.6,379.6 1347.5,676.0 1348.2,1081.2 1341.4,1235.2 1336.7,1282.8 1323.3,1378.8 1296.8,1492.5 849.6,1909.5 794.7,1755.3 566.5,1758.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1101.0,558.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3203351,40.7457328]}},{"type":"Feature","properties":{"resourceCoords":[273.0,92.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3223195,40.746634]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p11","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"282.6,564.0 389.2,561.4 759.8,296.4 756.5,116.4 1099.1,342.9 1114.7,319.9 1539.2,654.8 1537.1,658.1 1531.8,1578.6 1354.4,1599.6 1136.2,1826.9 116.8,1744.1 117.5,1736.5 123.2,1580.2 119.5,1169.2 135.8,868.5 131.2,567.6 282.6,564.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[773.0,1035.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3181641,40.7457056]}},{"type":"Feature","properties":{"resourceCoords":[124.0,104.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3196438,40.7474386]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.44"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"184.8,892.5 1.0,941.0 1.0,941.5 38.2,950.2 132.7,1447.8 43.2,1708.9 62.8,1858.4 523.5,1737.2 687.6,1876.0 903.0,1801.1 1171.3,1837.0 1524.4,1753.2 1564.0,731.2 1519.7,175.3 1547.4,127.8 579.1,280.5 584.8,319.3 594.8,413.0 596.5,526.4 272.9,1025.0 184.8,892.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[576.0,278.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.31980319549535,40.74446418475433]}},{"type":"Feature","properties":{"resourceCoords":[576.0,2480.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.32128515344829,40.74043897169766]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p13","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"640.7,1791.6 572.8,1668.2 127.9,1331.2 146.3,1111.2 358.2,1078.5 354.4,844.2 152.7,276.3 813.0,265.3 813.0,281.0 1361.0,287.3 1353.7,726.8 1357.0,1136.6 1348.1,1136.8 1346.3,1595.6 813.0,1594.0 816.2,1689.1 728.0,1822.7 640.7,1791.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[813.0,1594.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3223195,40.746634]}},{"type":"Feature","properties":{"resourceCoords":[813.0,281.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3222681,40.7490527]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p14","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1516.0,138.0 1520.7,676.5 1516.8,1216.5 1518.2,1732.0 859.6,1745.8 622.0,1085.9 539.9,999.9 328.1,1004.2 288.9,1231.4 142.9,1234.4 257.6,1129.8 303.3,858.6 298.2,610.4 192.4,437.2 261.9,260.5 243.1,145.2 273.6,139.1 980.0,138.9 1516.0,138.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1253.0,677.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3228616,40.75104]}},{"type":"Feature","properties":{"resourceCoords":[1516.0,138.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3221937,40.7520256]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0015__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p15 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.75"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2651.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3800.4"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0015__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1527.0,673.3 1528.1,94.4 923.0,82.6 801.3,260.6 802.2,1221.4 748.2,1508.3 786.9,1750.9 873.0,1741.2 994.0,1746.3 1526.2,1747.6 1521.7,1212.2 1527.0,673.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0015__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1262.3,1747.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3241419,40.7520531]}},{"type":"Feature","properties":{"resourceCoords":[1528.1,130.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3234323,40.7550192]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p16","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"273.9,225.2 998.9,138.6 998.9,96.1 1032.2,111.1 1482.0,118.2 1505.5,226.6 1502.3,915.6 1583.7,1451.0 1514.1,1626.2 1516.5,1773.5 760.3,1766.3 760.4,1754.8 274.0,1754.0 273.9,679.8 273.9,225.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[274.0,1218.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3127031,40.7558678]}},{"type":"Feature","properties":{"resourceCoords":[274.0,1754.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3127248,40.7548709]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p17","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.77"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"256.0,139.0 748.3,139.9 748.3,151.5 1513.7,158.8 1515.7,281.3 1436.2,356.1 1447.8,620.1 1521.4,626.3 1583.1,808.8 1538.0,1639.2 1349.5,1781.7 843.4,1812.1 844.5,1815.3 625.1,1760.5 256.0,1759.0 256.0,139.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[256.0,1759.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3127894,40.7518942]}},{"type":"Feature","properties":{"resourceCoords":[256.0,139.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3127248,40.7548709]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p18","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.77"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1352.0,1830.1 1352.0,1637.0 1352.0,236.3 818.6,236.5 818.6,244.8 21.9,249.7 35.7,628.5 46.1,741.6 40.4,755.8 67.3,1494.9 1.0,1479.4 1.0,1532.9 1352.0,1830.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1352.0,1116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3206731,40.7615015]}},{"type":"Feature","properties":{"resourceCoords":[1352.0,1637.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3206952,40.7605417]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p19","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.02"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"148.3,138.7 1349.0,402.9 1349.0,405.2 1430.2,440.2 1612.0,441.6 1612.0,1385.0 1440.5,1483.2 1349.0,1483.8 1349.0,1524.5 339.6,1739.3 107.9,1678.0 82.5,1485.6 181.5,1479.7 148.3,138.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1349.0,1170.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3207396,40.7586074]}},{"type":"Feature","properties":{"resourceCoords":[1349.0,230.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3206952,40.7605417]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p2","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"943.8,1594.5 795.5,1598.0 241.8,1606.4 235.3,1151.5 244.1,1151.1 233.4,744.9 232.7,309.0 459.1,307.5 729.8,304.0 849.2,293.8 1402.6,285.2 1400.0,727.0 1407.7,1156.5 1410.9,1332.6 1048.1,1592.0 943.8,1594.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[533.0,1602.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3203088,40.7466048]}},{"type":"Feature","properties":{"resourceCoords":[1400.0,727.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3181101,40.7481742]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0020__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p20 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3741.6"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0020__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"862.7,1806.8 854.4,151.0 583.3,184.0 582.8,209.0 107.8,258.0 34.7,770.9 60.6,959.4 35.5,960.0 70.9,1823.4 862.7,1815.0 862.7,1806.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0020__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[575.2,780.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3225815,40.7650545]}},{"type":"Feature","properties":{"resourceCoords":[854.4,151.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3218648,40.7662095]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0020__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p20 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3721.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2730.4"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0020__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0020","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1532.0,1765.4 1532.0,1222.0 1536.2,1222.0 1538.7,136.6 1000.0,134.6 1001.9,677.9 995.1,1222.8 993.8,1758.7 1532.0,1765.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0020__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1270.2,675.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.32156012089146,40.751028878264634]}},{"type":"Feature","properties":{"resourceCoords":[1534.0,675.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.32092214577011,40.75102155962292]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p21","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1556.7,1544.0 1559.6,1804.1 1568.7,1832.7 674.0,1833.0 133.6,1833.2 132.5,144.0 674.0,85.0 674.0,89.5 1173.2,17.8 1165.7,27.6 1315.4,106.6 1515.8,110.5 1547.0,199.1 1577.4,1544.0 1556.7,1544.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[674.0,1833.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3206359,40.7631222]}},{"type":"Feature","properties":{"resourceCoords":[674.0,85.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3205628,40.7662996]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p22","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0022","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"283.9,151.4 1351.1,142.4 1356.5,672.9 1352.8,1209.5 1364.9,1744.5 298.6,1752.9 283.9,151.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[820.0,1214.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3166309,40.7559206]}},{"type":"Feature","properties":{"resourceCoords":[820.0,678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3165966,40.7569179]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p23","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0023","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"283.8,1207.7 294.2,672.5 295.4,143.2 1350.2,147.6 1348.6,675.7 1345.5,1746.6 289.1,1741.5 283.8,1207.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[818.0,1210.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3140062,40.7558853]}},{"type":"Feature","properties":{"resourceCoords":[818.0,1744.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.314024,40.754889]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p24","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"23"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0024","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"293.5,114.8 1370.0,116.0 1366.2,654.0 1368.5,1192.4 1366.5,1731.0 293.8,1729.3 293.5,114.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[828.0,654.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3166678,40.7539323]}},{"type":"Feature","properties":{"resourceCoords":[564.0,654.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3173103,40.7539406]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p25","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"22"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0025","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"277.4,1744.5 284.9,1205.5 287.9,666.6 297.1,128.2 1367.1,140.3 1351.8,1756.3 809.4,1750.7 545.0,1747.7 277.4,1744.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[826.0,1211.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3140588,40.7529055]}},{"type":"Feature","properties":{"resourceCoords":[826.0,672.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3140496,40.7538984]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p26","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0026","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"46.1,1873.3 34.4,292.0 129.2,98.7 416.1,29.4 866.8,68.4 1320.8,20.1 1427.5,89.8 1606.2,96.5 1582.7,1339.5 1586.8,1452.5 1580.3,1466.2 1572.2,1894.0 1347.6,1885.8 1347.2,1898.2 205.3,1889.9 205.8,1878.1 46.1,1873.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[678.0,997.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.32609516433165,40.763011642849925]}},{"type":"Feature","properties":{"resourceCoords":[1365.0,1864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.32433679765326,40.76145619049613]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p27","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0027","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"212.9,53.5 1357.0,76.2 1357.6,64.0 1582.5,74.9 1572.8,383.7 1506.8,363.6 1503.2,416.7 1513.9,419.8 1510.9,488.8 1449.2,1912.0 1338.7,1912.0 1336.0,1871.0 399.2,1889.3 44.1,1827.5 53.6,34.9 213.6,41.7 212.9,53.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[423.0,1051.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3265317,40.7595061]}},{"type":"Feature","properties":{"resourceCoords":[1122.0,1051.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3248292,40.7595715]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0028__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p28 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"},{"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":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0028__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0028","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1558.2,39.8 1384.9,27.5 1369.5,52.4 1337.8,41.4 1251.1,152.2 1035.8,150.8 811.7,73.6 831.8,1.0 609.9,1.0 1.0,820.4 1.0,928.5 1.9,974.0 54.5,972.3 57.7,972.1 174.3,955.5 194.2,951.0 235.8,941.6 386.0,891.5 409.7,900.0 437.4,1025.5 456.7,1025.3 457.4,1115.8 633.5,1912.0 728.2,1912.0 732.4,1887.8 1344.2,1833.8 1489.1,1885.1 1535.2,1407.1 1510.6,1401.6 1531.9,1127.9 1578.0,592.7 1582.5,593.5 1608.2,96.9 1558.2,39.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0028__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[966.0,1303.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3225271,40.7671796]}},{"type":"Feature","properties":{"resourceCoords":[1280.0,534.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.32055,40.7668595]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0029__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p29 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.87"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3586.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4066.0"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0029__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0029","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"983.9,1908.5 1107.3,1824.5 1561.6,1870.5 1567.0,955.2 1410.4,1000.0 857.6,916.5 609.0,938.3 609.0,959.5 609.0,959.5 347.9,961.2 58.9,986.5 57.8,1851.3 983.9,1908.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0029__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[604.0,1306.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3145473,40.7675255]}},{"type":"Feature","properties":{"resourceCoords":[1564.0,1306.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3143468,40.7657448]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p3","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"25"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"225.8,1763.2 221.9,1223.7 226.1,1223.7 220.8,146.1 1403.5,141.7 1402.9,439.1 1416.2,606.3 1408.2,679.0 1409.4,1215.2 1417.1,1588.4 1417.3,1753.5 859.9,1755.4 739.4,1764.2 466.7,1764.5 225.8,1763.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[464.0,1222.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3203579,40.7500135]}},{"type":"Feature","properties":{"resourceCoords":[782.0,144.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3195253,40.751988]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p31","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0031","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1565.6,1850.2 1121.8,1887.5 52.2,1824.8 51.3,46.1 439.5,43.5 708.8,122.6 982.1,41.0 1538.3,72.7 1611.8,401.2 1565.6,1850.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0031/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[513.0,740.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3322146,40.7860132]}},{"type":"Feature","properties":{"resourceCoords":[1032.0,678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3314263,40.7852578]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0033__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p33 [1]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3795.2"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3856.8"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0033__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0033","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1.0,1197.4 1.0,1590.1 39.3,1590.2 40.3,1776.5 185.2,1776.6 719.6,1776.8 1249.2,1777.0 1249.2,1814.6 1612.0,1771.0 1612.0,1755.9 1612.0,1749.8 1566.4,1729.3 1549.2,1570.0 1473.3,1379.1 1353.3,1156.2 1272.4,1096.0 1249.5,1031.1 1063.7,990.7 1021.6,997.0 831.6,1104.0 808.1,1093.2 764.8,1084.7 714.2,1084.2 184.9,1083.5 184.9,1113.8 130.3,1196.2 41.0,1197.0 1.0,1197.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0033__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[586.0,1342.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3158767,40.7595125]}},{"type":"Feature","properties":{"resourceCoords":[185.0,1342.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3178439,40.7595381]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0033__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p33 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"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":"3832.0"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0033__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0033","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"175.6,937.4 220.8,957.0 475.1,957.0 619.9,956.0 709.8,955.3 764.9,872.5 765.0,842.0 1297.4,844.0 1348.4,844.6 1392.0,853.3 1415.5,864.2 1607.0,756.9 1565.5,762.9 1531.6,449.3 1436.7,450.7 1406.8,403.7 1395.4,129.9 1365.8,104.8 1073.9,120.1 827.8,21.4 623.7,50.0 622.7,1.0 612.5,1.0 613.6,128.0 618.0,142.1 177.7,141.1 175.8,839.8 175.6,937.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0033__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[177.0,399.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3206578,40.7621696]}},{"type":"Feature","properties":{"resourceCoords":[765.0,842.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3178224,40.7605012]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0034__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p34 [2]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3920.4"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2531.6"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0034__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0034","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1018.7,1742.3 1287.3,1742.7 1555.0,1743.0 1555.0,1475.0 1555.8,1307.5 1555.0,1206.0 1555.0,935.5 1555.0,310.4 1555.0,150.0 991.5,269.9 1108.4,300.9 1098.2,553.7 1073.8,627.3 1030.0,631.8 1024.0,917.4 1018.7,917.3 1018.5,1206.2 1016.1,1475.2 1018.7,1742.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0034__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1555.0,1206.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3208458,40.7539862]}},{"type":"Feature","properties":{"resourceCoords":[1555.0,1743.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3208913,40.7520072]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0034__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p34 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"2786.0"},{"label":"split_canvas_w","value":"3983.6"},{"label":"split_canvas_h","value":"4866.0"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0034__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0034","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"931.0,1849.9 968.0,1802.7 979.9,724.8 455.6,708.0 29.2,732.6 45.6,1884.2 362.4,1895.0 479.3,1859.6 931.0,1849.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0034__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,696.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.33197039126365,40.75818453055427]}},{"type":"Feature","properties":{"resourceCoords":[995.9,696.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.33191705434396,40.75449590160147]}},{"type":"Feature","properties":{"resourceCoords":[995.9,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.33782538230209,40.75444618621874]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.33787871922178,40.75813481517154]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p35","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0035","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.6,1841.2 55.6,1696.5 104.3,1392.3 68.4,705.8 98.7,323.7 84.2,130.7 110.2,86.2 329.1,42.1 803.9,54.0 1527.2,55.2 1590.0,170.3 1573.2,1339.1 1532.5,1346.4 1532.2,1520.8 1573.0,1524.6 1572.8,1576.5 1513.5,1587.5 1513.2,1728.5 1535.4,1776.8 1195.1,1810.7 1181.3,1797.0 492.6,1874.6 77.6,1841.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0035/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.3295625,40.7807442]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.3218182,40.7807539]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.3218029,40.7737988]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-80.3295472,40.7737891]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p36","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0036","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"948.1,1481.8 941.6,1483.2 944.2,1511.2 956.2,1569.3 965.2,1599.8 995.1,1673.7 991.6,1685.9 929.4,1703.8 930.1,1713.5 884.6,1716.7 489.8,1830.3 492.2,1877.9 83.4,1834.5 95.8,1275.5 32.9,789.5 43.2,118.8 67.5,36.3 59.9,34.7 748.7,35.1 760.9,50.2 1152.2,60.8 1163.8,71.7 1561.0,92.8 1583.2,151.2 1612.0,1692.7 1612.0,1706.7 1579.5,1861.8 1535.8,1886.5 1473.3,1873.3 1457.2,1864.0 1452.5,1790.7 1450.5,1758.5 1018.1,1477.4 988.4,1479.2 948.1,1481.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[481.0,493.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3249087,40.772442]}},{"type":"Feature","properties":{"resourceCoords":[749.0,1303.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3231756,40.7696101]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p38","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0038","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"36.5,1615.8 41.2,1052.4 83.5,802.4 105.2,329.4 75.6,47.9 141.8,21.7 685.5,14.5 1134.9,57.2 1229.4,22.4 1530.6,38.7 1571.9,104.6 1592.5,244.8 1532.8,735.4 1536.8,932.0 1571.6,1026.5 1563.4,1062.3 1561.2,1219.9 1566.1,1510.8 1584.1,1612.8 1547.0,1807.5 1565.8,1857.0 1453.3,1838.7 1148.2,1889.2 892.7,1887.2 576.6,1837.4 90.7,1839.0 95.0,1738.3 36.5,1615.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0038/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1102.0,1488.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.32835016391256,40.744208582904996]}},{"type":"Feature","properties":{"resourceCoords":[688.0,191.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.33171431399713,40.74851782769742]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p4","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"241.4,1224.7 242.7,890.0 240.8,687.1 240.1,146.7 1421.6,146.4 1424.3,1760.0 242.0,1760.0 241.4,1224.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[803.0,1760.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3195253,40.751988]}},{"type":"Feature","properties":{"resourceCoords":[242.0,1760.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3208913,40.7520072]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p5","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"219.9,1752.6 1404.1,1753.8 1403.4,134.2 1110.9,134.1 1110.2,1.0 553.5,1.0 322.3,133.3 220.1,133.9 219.9,500.6 219.9,1752.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[782.0,1213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3194347,40.7559582]}},{"type":"Feature","properties":{"resourceCoords":[782.0,134.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3193893,40.7579437]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1179.2,131.0 1446.0,130.3 1514.7,130.1 1475.3,454.5 1513.0,478.1 1454.5,565.8 1538.1,1786.0 1509.9,1785.8 1304.3,1647.7 913.4,1376.5 659.1,1742.0 120.5,1743.3 120.3,1578.5 113.0,1205.9 112.3,670.5 120.4,597.9 107.3,430.9 108.2,133.9 1179.2,131.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[472.0,1078.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.31717489524316,40.75020904233132]}},{"type":"Feature","properties":{"resourceCoords":[466.0,128.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.31714005180486,40.75196351782897]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p8 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"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":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1308.1,140.6 934.9,125.8 384.9,105.7 186.7,98.3 133.2,426.3 170.7,451.9 107.6,538.6 142.3,1782.0 113.6,1780.7 1.0,1698.1 1.0,1745.4 318.8,1878.2 670.9,1841.1 933.0,1734.6 966.0,1564.4 1147.5,1397.0 1231.8,871.1 1235.3,870.3 1235.4,863.6 1264.5,864.0 1485.5,816.5 1575.9,365.0 1528.0,203.9 1308.1,140.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[895.0,120.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.31288518090544,40.75190335676516]}},{"type":"Feature","properties":{"resourceCoords":[368.0,120.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.31414827489037,40.75188507382475]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Beaver Falls, Pennsylvania | 1921 | sanborn07516_007 p9","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:11:42Z","modified":"2026-10-19T01:11:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1020.3,1650.7 1020.0,1678.0 616.3,1678.0 371.9,1322.6 129.4,951.1 573.3,647.6 578.0,203.0 1052.9,207.3 1161.9,206.7 1189.7,244.2 1519.0,163.0 1515.2,166.6 1550.0,1695.2 1020.3,1650.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd382m:g3824m:g3824bm:g3824bm_g075161921:07516_1921-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1020.0,1678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3173243,40.7469431]}},{"type":"Feature","properties":{"resourceCoords":[578.0,203.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-80.3161144,40.7496405]}}]}}]}