{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03680_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Athol, Massachusetts | 1911 | 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":"39"},{"label":"placed","value":"21"},{"label":"unplaced","value":"18"},{"label":"fit sources","value":"georef-snap 12, georef 8, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"13 sheet(s) cut into 31 panels"},{"label":"unplaced pages","value":"p12__2 (tier 1, 42.59463,-72.22682 +/-139m); p16__2 (tier 1, 42.59395,-72.21815 +/-100m); p17__1 (tier 1, 42.59018,-72.22841 +/-100m); p18__2 (tier 1, 42.58998,-72.21782 +/-100m); p20__1 (tier 4, 42.59193,-72.22561 +/-1468m); p20__2 (tier 4, 42.59193,-72.22561 +/-1468m); p20__3 (tier 4, 42.59193,-72.22561 +/-1468m); p21__1 (tier 1, 42.58735,-72.22823 +/-125m); p21__2 (tier 1, 42.58826,-72.22799 +/-162m); p22__1 (tier 1, 42.58301,-72.20216 +/-154m); p22__2 (tier 1, 42.58312,-72.20378 +/-229m); p22__3 (tier 1, 42.58507,-72.20522 +/-103m); p2__2 (tier 1, 42.59454,-72.23654 +/-108m); p3__2 (tier 1, 42.59626,-72.23343 +/-100m); p3__3 (tier 1, 42.59063,-72.23507 +/-100m); p4__2 (tier 1, 42.59412,-72.22729 +/-100m); p8__1 (tier 1, 42.59263,-72.24061 +/-107m); p8__2 (tier 2, 42.59108,-72.23697 +/-265m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p10","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1145.9,1857.7 348.6,1871.7 352.5,1912.0 207.2,1912.0 358.2,1858.1 329.0,1575.0 136.3,1594.1 123.7,1089.7 152.8,511.8 161.9,504.6 106.3,291.2 88.6,164.4 88.5,66.8 697.5,79.6 902.0,80.0 1296.5,88.4 1517.7,96.9 1561.0,99.1 1497.6,1143.7 1503.6,1143.6 1494.9,1575.6 1486.2,1578.0 1485.0,1805.8 1183.7,1912.0 1166.8,1912.0 1136.0,1912.0 1145.9,1857.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[329.0,1575.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.235263,42.590709]}},{"type":"Feature","properties":{"resourceCoords":[902.0,80.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.2347044,42.5936098]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.72"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"106.1,109.2 463.4,95.5 641.1,99.0 837.2,121.3 1183.8,184.4 1549.2,260.8 1563.0,263.9 1447.2,827.7 1476.0,807.6 1346.0,1808.8 1104.8,1767.3 988.1,1715.5 935.6,1712.4 875.2,1727.8 492.1,1662.0 487.9,1653.5 141.7,1808.8 124.1,1582.8 132.6,1579.7 105.6,1150.6 99.6,1151.2 76.5,110.1 106.1,109.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1492.0,755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.22936822330885,42.59304006161539]}},{"type":"Feature","properties":{"resourceCoords":[417.0,1501.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.23176229345117,42.591401682822514]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0012__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p12 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.82"},{"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":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0012__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"393.8,1848.4 490.3,1912.0 693.8,1912.0 713.7,1834.5 1057.8,620.4 1058.5,513.9 1123.4,510.8 1190.8,512.1 842.8,138.7 778.8,132.7 175.1,66.8 155.2,64.8 112.0,629.8 137.7,606.6 134.9,1600.8 1.0,1594.9 1.0,1603.3 5.7,1644.1 393.8,1848.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0012__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1082.0,491.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.22699856471552,42.593184226154605]}},{"type":"Feature","properties":{"resourceCoords":[665.0,1997.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.22799517124825,42.59035959167283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0013__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p13 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0013__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"29.7,1037.0 79.7,1108.3 39.0,1595.8 150.2,1730.3 118.6,1801.7 284.6,1807.3 406.4,1729.9 757.7,1865.7 1079.3,1806.6 1189.9,1873.1 1456.1,1874.9 1500.5,1675.7 1448.1,1324.2 1381.7,1246.8 1265.0,1278.2 1125.5,1247.2 860.9,440.8 861.4,440.8 860.7,438.6 1046.2,439.8 1525.5,437.2 1531.1,271.2 1612.0,203.8 1612.0,1.0 1427.0,1.0 1001.2,42.7 969.4,4.7 878.4,59.0 758.1,95.0 716.9,126.3 681.6,176.5 353.3,372.5 344.7,368.9 52.2,989.3 50.9,992.0 29.7,1037.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0013__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[139.0,2174.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.23443307212472,42.58850073177825]}},{"type":"Feature","properties":{"resourceCoords":[575.0,476.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.23118544598515,42.59074259641548]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0013__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p13 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.76"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3442.8"},{"label":"split_canvas_y","value":"1754.4"},{"label":"split_canvas_w","value":"3009.2"},{"label":"split_canvas_h","value":"3227.6"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0013__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1220.5,471.9 1218.5,442.1 1095.9,484.2 988.2,553.6 952.5,471.1 915.0,598.6 1106.9,1111.6 1196.3,1148.2 1211.2,1228.6 1365.3,1234.0 1456.5,1142.2 1575.3,1140.6 1581.3,476.3 1521.3,442.7 1521.3,442.7 1220.5,471.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0013__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1231.3,847.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.20928143673056,42.586486663283175]}},{"type":"Feature","properties":{"resourceCoords":[1231.3,498.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.21008286966587,42.58677147068599]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p14","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"16"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"365.1,407.1 372.9,299.0 439.1,300.3 508.6,306.4 715.3,340.3 790.1,333.7 1032.0,285.6 1242.9,240.2 1363.7,208.6 1536.3,174.3 1520.7,293.9 1450.2,602.5 1412.2,740.5 1374.5,911.3 1324.5,1081.6 1605.0,1153.0 1511.3,1540.5 1564.5,1579.2 1612.0,1579.5 1612.0,1848.9 1433.6,1861.8 1439.1,1838.8 1148.7,1798.8 1052.8,1752.5 926.0,1703.0 736.1,1647.9 725.2,1694.9 329.0,1696.1 337.9,1672.9 31.0,1341.3 365.1,407.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1605.0,1153.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.2238207,42.5917672]}},{"type":"Feature","properties":{"resourceCoords":[825.0,1294.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.2257286,42.5913905]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"163.1,1296.2 56.0,335.6 23.9,79.0 834.2,64.2 1014.4,65.3 1315.4,77.6 1516.6,82.5 1612.0,95.7 1612.0,1627.0 1574.4,1679.2 1185.7,1587.2 1115.5,1868.6 944.6,1819.4 773.2,1782.6 634.8,1745.1 325.2,1676.1 205.2,1661.1 163.1,1296.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1160.0,1591.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.22383508285102,42.59181350365551]}},{"type":"Feature","properties":{"resourceCoords":[512.0,62.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.2201702094253,42.59321446255278]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0016__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p16 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0016__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1388.9,1816.7 1361.9,1476.0 1339.8,1272.6 1313.3,1095.0 1297.7,940.6 1281.2,570.2 1399.8,538.3 1358.8,129.0 1183.6,23.8 788.0,128.7 691.7,299.1 691.0,306.1 684.3,367.8 646.5,379.2 605.6,451.6 237.2,523.3 208.5,615.9 130.2,641.4 99.7,845.5 27.3,931.5 38.1,1085.4 153.7,1085.2 104.0,1248.3 84.7,1344.2 79.4,1466.1 100.4,1727.6 909.9,1769.6 1089.5,1783.4 1388.9,1816.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0016__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[564.0,1782.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.22027058898198,42.59324891050776]}},{"type":"Feature","properties":{"resourceCoords":[1326.0,1014.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.21810208121846,42.592076965331]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0017__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p17 [2]","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.86"},{"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":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0017__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1142.8,1.0 931.9,1.0 948.3,40.4 681.4,121.0 444.9,84.0 143.6,181.8 132.3,255.1 64.9,265.7 31.9,1032.1 99.3,1193.3 172.2,1198.0 354.4,1198.0 377.4,1211.2 503.6,1473.5 499.6,1716.6 588.8,1700.1 685.3,1853.4 1256.2,1799.2 1282.1,1908.2 1310.4,1912.0 1595.0,1912.0 1595.0,1890.0 1612.0,1889.0 1612.0,1788.2 1554.7,1660.4 1578.7,1657.7 1515.4,1364.0 1526.3,1255.5 1529.5,1116.2 1516.0,914.0 1466.9,920.0 1326.8,539.0 1352.2,539.4 1563.8,127.7 1264.2,129.4 1180.7,132.0 1142.8,1.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0017__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1516.0,1364.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.22482,42.590518]}},{"type":"Feature","properties":{"resourceCoords":[1516.0,914.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.225876,42.59073]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0018__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p18 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"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":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0018__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1439.9,1293.5 1539.0,1215.7 1582.7,676.9 1551.9,657.0 1474.0,481.8 1422.1,332.7 1424.5,263.9 1327.0,1.0 1259.5,1.0 1245.5,29.9 140.8,75.5 118.4,60.4 137.3,473.1 16.8,498.6 13.2,871.0 20.6,1026.7 37.5,1206.2 48.7,1411.3 57.4,1754.5 257.3,1784.3 351.7,1809.7 338.9,1912.0 888.6,1912.0 917.4,1834.2 950.6,1744.3 1285.7,1350.3 1425.3,1324.9 1429.8,1343.1 1439.9,1293.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0018__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[643.0,965.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.21784701747096,42.59098905979683]}},{"type":"Feature","properties":{"resourceCoords":[38.0,1732.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.22000810084937,42.59178878889666]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0019__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p19 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.54"},{"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":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0019__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"872.1,9.3 471.1,75.4 341.7,185.6 296.5,435.2 157.1,519.4 139.0,646.2 75.4,656.0 129.9,777.0 28.8,921.2 80.4,1342.8 37.4,1771.4 118.3,1844.7 117.4,1859.2 387.4,1785.3 473.8,1779.5 670.5,1753.6 771.8,1718.9 745.5,1705.7 713.4,1276.4 761.5,860.9 785.5,820.8 888.3,744.2 1513.0,733.4 1468.8,371.4 1416.0,405.5 1203.7,246.4 1170.3,190.7 1053.0,99.0 903.2,1.0 898.5,1.0 872.1,9.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0019__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1262.0,227.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.21574991952107,42.58996886543282]}},{"type":"Feature","properties":{"resourceCoords":[818.0,558.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.21536234598423,42.58893697474687]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0019__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p19 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.23"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3109.2"},{"label":"split_canvas_y","value":"2999.6"},{"label":"split_canvas_w","value":"3342.8"},{"label":"split_canvas_h","value":"4652.4"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0019__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1549.4,775.2 1437.7,792.6 1228.3,783.3 1137.4,773.4 842.9,800.5 797.0,990.7 830.2,1727.8 793.0,1789.8 807.3,1881.0 932.3,1839.9 1065.0,1829.7 1059.2,1859.8 1362.7,1905.5 1351.8,1895.1 1565.8,1837.7 1585.3,1518.3 1512.3,1112.1 1604.0,816.0 1549.4,775.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0019__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1167.2,773.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.2127529,42.5873546]}},{"type":"Feature","properties":{"resourceCoords":[807.3,1881.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.210226,42.586315]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0021__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p21 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.53"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3385.2"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4266.8"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0021__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0021","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"15.8,1056.5 69.7,1080.2 80.7,1105.8 46.0,1131.5 22.9,1386.2 76.7,1909.5 854.9,1911.9 974.5,1827.9 1224.8,1829.4 1384.0,1893.3 1498.9,1853.7 1596.5,1892.9 1612.0,1892.0 1612.0,1774.6 1340.7,1443.4 1272.4,1403.0 1212.6,1367.5 1221.5,1318.4 753.6,1315.1 753.6,1315.0 753.6,1315.0 855.4,957.0 855.9,901.0 737.1,852.5 521.8,850.7 178.8,847.8 36.4,1035.8 15.8,1056.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0021__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[440.0,979.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.2226016,42.5903637]}},{"type":"Feature","properties":{"resourceCoords":[272.0,1700.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.2222639,42.5887527]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p2 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"},{"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":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1375.6,1158.0 1366.7,943.4 1497.2,297.6 1355.9,1.0 1353.7,1.0 1269.5,48.9 870.5,22.7 580.2,97.0 517.6,849.3 487.0,854.6 487.0,888.5 486.0,888.5 275.3,891.3 76.9,1012.2 122.9,1143.4 88.9,1690.4 1.0,1703.0 1.0,1707.7 482.9,1753.3 822.2,1715.5 1430.5,1653.3 1375.6,1158.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[504.0,1751.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.2374578,42.593177]}},{"type":"Feature","properties":{"resourceCoords":[1492.0,323.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.2353859,42.595951]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p3 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.91"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"895.8,1812.9 967.3,1814.2 1318.5,1818.4 1492.7,1830.6 1492.2,1776.2 1511.8,1474.0 1531.1,785.1 1567.6,681.1 1612.0,610.6 1612.0,535.9 1598.5,548.4 1513.3,458.4 816.8,491.5 781.0,457.5 776.0,457.5 776.0,452.8 748.7,426.8 692.0,114.8 574.4,40.5 472.6,35.4 163.1,205.3 277.1,513.3 94.1,1128.1 84.0,1337.0 94.0,1822.2 293.7,1816.1 679.4,1811.7 895.8,1812.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1114.0,1818.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.232656,42.5939]}},{"type":"Feature","properties":{"resourceCoords":[84.0,1337.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.235461,42.5944151]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p4 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"141.1,233.1 149.5,434.4 140.4,794.0 120.9,1174.6 118.3,1209.6 68.0,1837.1 66.5,1860.2 1031.3,1695.9 1008.8,1647.9 998.6,1438.4 1088.5,1217.0 1095.8,1217.0 1415.2,1216.0 1489.2,1140.1 1581.5,150.4 1484.8,81.4 1407.7,96.4 1326.6,66.1 1213.0,51.0 507.9,177.1 196.4,221.1 141.1,233.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[134.0,1187.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.22937085547096,42.59397797147358]}},{"type":"Feature","properties":{"resourceCoords":[1385.0,4.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.232226854143,42.59625822527068]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.61"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1555.0,1690.8 1526.2,1698.9 1368.1,1911.6 1367.6,1865.0 497.7,1834.3 404.1,1785.2 257.4,1874.1 72.5,1823.2 30.4,683.1 93.8,365.4 35.8,270.7 46.1,90.8 254.3,36.9 1298.2,21.5 1418.8,44.0 1428.2,109.7 1612.0,142.6 1612.0,383.3 1598.7,432.7 1494.3,1604.4 1555.0,1690.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[396.0,1636.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.2278868778401,42.597696720899606]}},{"type":"Feature","properties":{"resourceCoords":[1087.0,229.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.22380275320623,42.59757426574315]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.43"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1512.5,553.8 1514.5,723.4 1523.1,843.4 1528.8,1051.2 1531.7,1288.7 1524.8,1360.7 1456.2,1550.6 1455.9,1551.6 1016.1,1791.0 1002.2,1829.8 82.1,1726.8 43.1,1484.7 169.0,1249.0 196.6,1236.6 123.2,1159.5 56.4,39.2 908.9,80.7 918.3,43.5 1292.4,142.8 1538.7,201.7 1512.5,553.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[141.0,1158.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.22663853998601,42.595760694954045]}},{"type":"Feature","properties":{"resourceCoords":[1528.0,182.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.22325576067153,42.59370460879235]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.41"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"11.6,1901.0 901.3,1838.8 906.5,1798.8 1306.8,1856.1 1569.5,1887.0 1532.8,910.5 1519.5,649.5 1499.3,385.0 1505.0,261.8 1524.7,164.8 1574.9,1.0 1459.2,1.0 1467.0,118.5 1234.5,23.1 756.1,18.4 482.2,97.5 88.8,75.6 18.6,1527.2 1.0,1528.8 1.0,1841.0 11.6,1901.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.21928786514256,42.597018984668416]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.21869382148563,42.59411186715963]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.22334456040551,42.593589566956275]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.22393860406243,42.59649668446506]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0008__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p8 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.24"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2890.0"},{"label":"split_canvas_w","value":"3938.8"},{"label":"split_canvas_h","value":"4762.0"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0008__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"215.2,895.7 95.9,1152.1 97.0,1178.0 43.9,1191.9 67.5,1849.4 346.3,1878.1 582.8,1769.9 808.2,1820.1 854.7,1407.8 747.5,1058.6 601.4,1087.8 741.8,1002.4 653.8,724.5 194.0,868.0 215.2,895.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0008__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[741.8,1002.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.235035,42.590216]}},{"type":"Feature","properties":{"resourceCoords":[653.8,724.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.235263,42.590709]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Athol, Massachusetts | 1911 | sanborn03680_006 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T21:46:58Z","modified":"2026-10-19T21:46:58Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1419.4,138.4 1420.5,234.6 1439.3,359.3 1496.2,569.1 1487.4,576.2 1464.6,1146.1 1482.3,1643.1 1211.3,1672.8 1226.2,1703.0 1074.2,1912.0 1078.6,1839.7 823.1,1784.0 443.6,1887.1 95.0,1610.3 24.1,1423.8 100.4,972.0 43.7,788.6 185.3,343.6 145.1,119.1 227.5,47.9 618.4,36.0 617.9,40.4 1084.1,138.1 1419.4,138.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036801911:03680_1911-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1186.0,1675.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.23643223034196,42.59042108531943]}},{"type":"Feature","properties":{"resourceCoords":[876.0,136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.23802308018162,42.59309030713283]}}]}}]}