{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03836_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Salem, Massachusetts | 1906 | mapsnap generated fit (2026-10-24)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-24"},{"label":"run","value":"corpus-v2.2"},{"label":"pages","value":"95"},{"label":"placed","value":"75"},{"label":"unplaced","value":"20"},{"label":"fit sources","value":"georef-snap 45, georef 30, snap:0 3, snap:1 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"16 sheet(s) cut into 33 panels"},{"label":"unplaced pages","value":"p12__2 (tier 1, 42.52272,-70.88296 +/-100m); p26__1 (tier 2, 42.51808,-70.88810 +/-223m); p26__2 (tier 1, 42.51699,-70.88752 +/-110m); p2__1 (tier 2, 42.53339,-70.89711 +/-903m); p2__2 (tier 1, 42.53418,-70.88564 +/-216m); p32__2 (tier 1, 42.51457,-70.89120 +/-100m); p34__2 (tier 1, 42.51181,-70.88745 +/-100m); p37__1 (tier 1, 42.50724,-70.89740 +/-100m); p39__1 (tier 1, 42.50602,-70.89236 +/-100m); p47__1 (tier 1, 42.51579,-70.90227 +/-116m); p55__2 (tier 1, 42.52023,-70.91645 +/-105m); p68__2 (tier 1, 42.52932,-70.90317 +/-100m); p6__2 (tier 1, 42.52964,-70.88755 +/-200m); p71__2 (tier 1, 42.52929,-70.87953 +/-136m); p72__2 (tier 1, 42.53316,-70.87052 +/-100m); p9__2 (tier 2, 42.52447,-70.88591 +/-177m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p1","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0001","type":"ImageService3","width":1687,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"513.2,1909.7 514.3,1884.0 587.4,1890.0 1304.9,1936.4 1307.3,1842.3 1421.3,1821.1 1673.6,1466.2 1673.9,1287.8 1661.6,1290.2 1664.8,580.7 1596.1,157.8 1517.4,88.5 1195.0,28.4 500.0,91.9 172.9,41.3 79.6,191.7 70.5,1818.3 1.0,1829.2 1.0,1844.0 513.2,1909.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1311.0,1420.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8879126,42.5334759]}},{"type":"Feature","properties":{"resourceCoords":[1311.0,587.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8872766,42.5348878]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p10","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0010","type":"ImageService3","width":1669,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"440.2,334.5 681.0,298.0 830.2,266.6 975.2,225.2 1103.2,178.2 1219.8,118.8 1288.4,75.3 1347.6,201.9 1446.6,485.1 1544.7,817.1 1582.5,977.6 1600.9,1121.2 1548.9,1120.2 1406.3,1117.3 1413.0,1921.8 1359.4,1862.6 1001.7,1936.6 761.4,1915.1 159.5,1710.5 87.2,1798.3 122.3,1346.4 155.4,1073.8 188.1,829.9 244.2,356.2 440.2,334.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[974.0,1103.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.884194,42.522676]}},{"type":"Feature","properties":{"resourceCoords":[681.0,298.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.885849,42.523585]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0011","type":"ImageService3","width":1671,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"362.4,1596.8 283.0,1166.7 243.3,1015.7 212.2,874.1 187.7,707.0 136.9,636.4 164.9,628.5 167.7,457.5 386.1,333.4 738.3,297.2 1063.3,99.4 1298.2,90.0 1533.6,169.5 1516.7,375.8 1532.8,402.3 1504.2,397.2 1499.3,446.6 1492.2,600.0 1505.3,651.6 1511.5,696.1 1513.6,722.6 1523.9,1092.0 1528.1,1352.4 1532.3,1471.2 1526.6,1692.9 1504.2,1772.7 1461.0,1879.7 1323.0,1834.8 1161.6,1800.1 819.0,1746.4 520.0,1714.5 380.1,1713.8 362.4,1596.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[938.0,1349.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88331815147485,42.524545731709615]}},{"type":"Feature","properties":{"resourceCoords":[1515.0,1349.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88213279513428,42.524013905971934]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0012__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p12 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.73"},{"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":"6684.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0012__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0012","type":"ImageService3","width":1671,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"83.4,10.8 78.8,10.6 54.1,9.4 67.8,214.2 87.4,264.4 112.5,378.1 183.8,841.0 218.4,1082.8 240.8,1306.0 228.3,1388.8 198.7,1501.6 133.4,1687.7 909.6,1935.2 1199.0,1806.6 1040.4,1805.0 862.8,1680.9 903.5,1274.8 903.5,1272.0 918.2,1272.0 1507.9,1157.3 1509.1,615.4 1371.8,183.8 878.3,45.7 154.9,100.6 83.4,10.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0012__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[207.0,1076.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8822609886375,42.523834826890116]}},{"type":"Feature","properties":{"resourceCoords":[191.0,962.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88212179009999,42.52400866394527]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0013","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"351.0,1805.3 168.7,1776.1 148.9,1473.0 92.5,1400.5 173.0,631.9 102.0,526.9 262.5,264.6 1178.5,214.7 1482.3,218.2 1541.8,499.2 1559.6,613.8 1569.5,796.8 1570.5,1112.4 1563.6,1159.8 1591.4,1161.6 1545.3,1576.1 1524.3,1597.5 1539.2,1631.6 1514.0,1858.5 1488.9,1852.7 1431.7,1850.9 1417.1,1730.6 1399.1,1660.9 458.9,1922.5 351.0,1805.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[725.0,213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89243453097032,42.527690187848016]}},{"type":"Feature","properties":{"resourceCoords":[1553.0,1092.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89240076708285,42.52555464298633]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0014","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1258.4,1906.5 1297.9,1926.5 1345.3,1829.0 1387.5,1696.1 1444.2,1451.2 1486.5,1287.8 1559.2,1031.7 1618.8,897.9 1665.0,917.2 1665.0,23.0 1657.0,23.0 1655.0,18.0 1511.0,18.0 1510.0,1.0 1483.0,1.0 1482.0,18.0 1233.3,18.0 1307.5,277.1 1250.1,280.8 123.4,141.4 159.9,249.4 200.1,425.1 254.0,730.8 255.2,778.0 282.4,775.0 307.2,1184.4 290.4,1208.7 310.5,1239.2 324.1,1463.4 331.2,1463.8 399.4,1485.0 985.7,1769.5 1258.4,1906.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1420.0,630.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89047300039009,42.52395579147601]}},{"type":"Feature","properties":{"resourceCoords":[277.0,601.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89211762560566,42.5256166018205]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p15","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0015","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"18.1,759.9 18.4,537.1 245.2,616.5 364.4,543.6 420.8,554.5 659.1,559.5 703.5,464.2 673.4,290.9 1152.1,268.8 1399.2,261.2 1457.0,820.3 1462.0,911.0 1526.2,1557.3 1520.5,1627.0 1419.5,1616.0 1194.1,1612.3 835.2,1613.0 508.1,1606.8 406.0,1599.0 374.4,1700.2 331.9,1904.1 297.1,1872.5 119.3,1819.0 67.7,1823.9 74.6,1800.7 18.1,759.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1462.0,911.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8872445,42.5213542]}},{"type":"Feature","properties":{"resourceCoords":[406.0,1599.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8897792,42.5225675]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0016","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"397.3,167.0 850.1,143.8 1051.5,270.4 1375.1,334.8 1505.5,448.9 1618.2,807.9 1633.4,1263.2 1517.3,1832.0 1345.6,1918.6 728.4,1667.0 658.5,1657.3 490.0,1603.7 348.0,1573.7 195.2,1532.3 203.3,1463.3 162.2,817.9 160.5,727.5 122.6,169.2 397.3,167.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[177.0,1136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8879179097553,42.521083659280805]}},{"type":"Feature","properties":{"resourceCoords":[177.0,1517.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88874313752159,42.52078786815243]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0017","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"94.0,1945.2 97.1,1901.6 97.5,1894.3 104.7,1826.7 149.4,1828.8 152.7,1719.4 136.5,1579.5 87.3,1330.5 58.6,1162.5 19.5,896.7 19.1,809.9 18.9,748.8 70.6,747.4 18.4,631.5 18.0,519.0 23.0,12.0 86.7,16.4 263.0,742.2 260.5,766.1 310.0,752.0 493.1,771.9 532.8,796.3 537.2,589.7 549.6,485.3 650.6,474.4 970.8,420.9 1320.8,355.1 1541.3,317.7 1641.8,310.1 1634.4,382.1 1591.5,604.8 1526.2,897.6 1538.7,983.6 1639.0,1223.9 1665.0,1309.6 1665.0,1463.7 1159.3,1468.2 1158.2,1402.8 1075.1,1401.4 124.2,1957.6 93.1,1958.0 94.0,1945.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1687.0,1451.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89141479637371,42.52019877191856]}},{"type":"Feature","properties":{"resourceCoords":[-7.0,758.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8907314172871,42.5234199180231]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.75"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0018","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1250.9,1765.5 511.6,1786.6 511.3,1785.6 411.4,1412.2 370.6,1414.9 360.9,1262.0 330.2,1178.3 217.2,945.3 200.0,860.6 248.4,566.2 278.5,342.7 281.8,270.7 438.6,268.9 582.1,259.2 757.2,264.9 826.5,255.2 1483.0,328.5 1477.0,334.1 1526.8,740.9 1646.7,754.6 1644.1,777.6 1591.8,777.9 1554.5,998.9 1479.1,1003.2 1450.2,1037.7 1284.6,1384.1 1271.6,1424.8 1255.8,1680.1 1250.9,1765.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[389.0,1415.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89144872193808,42.5201973333626]}},{"type":"Feature","properties":{"resourceCoords":[456.0,259.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88865465664946,42.52044336400644]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0019","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"38.6,15.6 74.8,17.2 89.8,17.9 213.2,292.0 786.5,38.0 775.9,137.1 925.7,229.3 1204.1,259.3 1223.8,147.3 1312.6,137.9 1472.1,1057.2 1450.3,1061.7 1443.2,1367.1 1452.6,1488.5 1475.6,1540.3 1475.1,1820.3 1475.1,1887.5 1353.2,1886.8 1276.5,1879.0 269.6,1650.3 252.0,1490.8 268.8,1333.7 302.1,1110.8 337.4,838.6 336.4,746.7 318.7,658.2 288.9,581.4 168.7,309.8 38.6,15.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[244.0,1378.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8989094239603,42.52302279368953]}},{"type":"Feature","properties":{"resourceCoords":[1470.0,1179.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89601247968868,42.52360971910835]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0020","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1100.6,1882.2 1084.4,1863.6 657.0,1873.1 263.8,1865.0 284.7,1586.0 265.6,1532.7 265.0,1411.0 294.4,1107.2 316.4,1104.4 224.5,176.8 637.7,163.7 658.2,51.3 1426.5,638.9 1382.1,694.8 1295.7,778.2 1328.4,824.5 1341.7,854.3 1354.1,925.2 1369.6,1581.8 1372.7,1889.3 1304.9,1885.7 1254.0,1884.8 1154.5,1883.0 1100.6,1882.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[296.0,1545.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8958962592819,42.52304597887957]}},{"type":"Feature","properties":{"resourceCoords":[1366.0,1859.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89321115637105,42.52283730846986]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0021","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1254.1,1789.4 1165.9,1769.2 1025.3,1752.5 712.7,1691.2 572.9,1660.3 576.0,1640.1 217.8,1617.8 242.2,832.2 236.7,832.9 258.8,193.7 1259.2,438.2 1335.5,447.2 1457.1,449.9 1452.4,962.9 1472.9,1034.8 1473.2,1421.7 1468.9,1609.9 1468.7,1617.0 1468.2,1641.2 1419.2,1643.0 1380.3,1863.8 1254.1,1789.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[658.0,865.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89761553413972,42.52144220885708]}},{"type":"Feature","properties":{"resourceCoords":[1469.0,399.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89580321468655,42.52244786294159]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p22","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0022","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"26.2,1303.7 47.7,1117.8 82.7,734.7 69.0,661.6 120.5,154.1 127.7,87.9 517.4,109.8 941.8,115.4 957.2,134.4 1010.6,137.1 1096.6,141.7 1097.6,172.4 1665.0,1105.0 1665.0,1187.3 1600.2,1189.5 1614.6,1732.2 1239.0,1817.2 1095.4,1851.8 878.6,1902.8 751.9,1924.7 685.5,1923.6 560.7,1899.7 390.3,1828.8 192.6,1739.2 25.1,1629.1 22.2,1338.5 26.2,1303.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1214.0,192.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89319129296314,42.522709284258845]}},{"type":"Feature","properties":{"resourceCoords":[776.0,1939.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89332250415141,42.51947285385965]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p23","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0023","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1178.7,1412.7 1264.5,1445.8 1172.7,1462.5 1099.9,1514.9 1070.3,1564.2 1027.5,1653.8 1038.3,1545.1 1004.9,1550.4 804.6,1653.3 571.8,1781.6 451.0,1843.2 411.8,1552.4 379.9,1298.1 364.2,964.8 357.3,691.0 362.6,691.1 377.2,248.2 743.1,271.8 739.9,292.4 882.7,324.4 1202.0,387.6 1345.6,405.1 1435.7,425.9 1564.5,502.1 1552.8,558.4 1501.1,519.0 1376.5,456.7 1312.1,1402.0 1182.0,1374.7 1170.5,1376.7 1178.7,1412.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[785.0,1661.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89706787974943,42.517647224529235]}},{"type":"Feature","properties":{"resourceCoords":[371.0,698.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89832997684553,42.51922761706577]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0024","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1116.0,1970.7 1109.7,1978.0 1095.9,1978.0 1081.0,1978.0 1079.2,1966.9 1108.1,1841.5 194.6,1761.2 257.1,1641.8 296.2,1592.6 242.1,1580.2 24.6,1536.9 24.2,1516.3 23.9,1488.5 315.9,1465.5 413.5,1291.6 488.5,1089.2 547.0,915.1 562.0,789.6 558.4,723.8 527.8,599.5 462.1,387.9 418.1,248.8 1149.7,205.2 1149.0,234.8 1135.9,739.2 1324.2,736.5 1573.6,743.6 1560.9,811.3 1518.0,1111.9 1364.0,1269.8 1291.5,1409.2 1266.1,1483.8 1149.7,1888.4 1116.0,1970.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[494.0,386.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8925909575603,42.51969245880225]}},{"type":"Feature","properties":{"resourceCoords":[1146.0,743.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89322525556538,42.51843288703465]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p25","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0025","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"504.0,1824.0 249.0,1818.9 56.6,1823.4 65.5,1307.8 67.5,1190.7 73.2,931.7 84.6,889.9 238.2,532.7 266.1,496.6 342.2,489.2 371.0,264.0 423.9,261.6 500.5,264.4 713.5,286.2 679.1,538.8 1218.8,678.4 1200.6,840.4 1196.3,1036.5 1197.0,1227.0 1206.0,1828.3 504.0,1824.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1197.0,1227.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.891429,42.516598]}},{"type":"Feature","properties":{"resourceCoords":[504.0,1824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8930747,42.517668]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p27","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0027","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"212.1,312.6 798.3,298.4 984.0,296.0 1175.2,298.4 1329.2,314.3 1443.8,867.5 1415.0,863.9 1420.6,1290.2 1450.0,1286.6 1533.5,1393.2 1443.9,1379.8 1379.2,1709.0 1032.4,1664.5 1018.1,1754.4 842.4,1498.5 855.1,1563.2 224.6,1561.8 217.5,855.9 208.0,433.0 212.1,312.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[984.0,296.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8909765,42.5166452]}},{"type":"Feature","properties":{"resourceCoords":[208.0,433.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8928273,42.5162195]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p28","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0028","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"388.4,1600.0 359.3,1606.3 313.5,1179.3 342.7,1180.2 175.6,636.2 179.8,636.2 261.8,94.8 512.0,103.0 511.9,18.0 560.0,18.0 572.2,15.1 636.0,12.0 640.0,18.0 677.2,18.0 671.0,76.6 1202.2,109.6 1379.5,190.6 1464.8,328.5 1436.5,1602.1 1033.2,1775.9 928.6,1764.8 937.6,1720.1 778.8,1759.7 765.3,1714.3 482.3,1699.0 388.4,1600.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[512.0,103.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8893513,42.5176719]}},{"type":"Feature","properties":{"resourceCoords":[512.0,1573.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8892294,42.5150271]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p29","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0029","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1665.0,1553.3 187.7,1455.7 159.6,1437.8 110.1,1365.7 95.9,1275.9 214.4,868.9 240.3,793.9 313.7,653.8 469.3,495.2 513.5,192.7 526.5,124.5 1218.0,137.0 1339.7,143.7 1328.5,472.6 1299.3,455.1 1548.4,1479.8 1665.0,1514.5 1665.0,1553.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1278.0,135.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8928286656439,42.516331226678055]}},{"type":"Feature","properties":{"resourceCoords":[164.0,1500.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89651803942876,42.51794559301981]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0003","type":"ImageService3","width":1683,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1192.3,1945.7 1192.2,1948.4 522.7,1927.4 523.0,1924.6 214.1,1895.1 140.8,1688.7 155.1,464.1 73.7,314.3 62.4,109.3 74.7,49.1 181.1,32.7 750.5,107.2 751.6,81.3 825.4,87.5 1549.5,136.2 1544.1,598.2 1547.5,886.0 1543.5,1102.7 1537.0,1622.4 1537.5,1957.0 1192.3,1945.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1188.0,1937.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8904970964702,42.529777299606074]}},{"type":"Feature","properties":{"resourceCoords":[1538.0,105.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88832367312598,42.53266281140753]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p30","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0030","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"412.6,1491.8 416.6,1453.2 304.0,1406.5 161.8,360.1 189.1,380.6 234.2,54.0 659.9,97.6 1369.6,179.1 1622.2,208.1 1509.2,1186.8 1376.7,1837.9 1295.5,1898.8 734.8,1732.5 736.6,1701.1 257.3,1465.2 412.6,1491.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1081.0,1726.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8962506,42.514002]}},{"type":"Feature","properties":{"resourceCoords":[811.0,115.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8926209,42.5151911]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p31","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0031","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"229.7,1666.2 349.5,1014.9 443.9,37.4 1509.2,139.7 1414.2,1172.9 1377.0,1566.9 1347.3,1918.2 514.4,1829.3 149.8,1728.5 229.7,1666.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0031/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1456.0,718.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8933921,42.5116878]}},{"type":"Feature","properties":{"resourceCoords":[654.0,1809.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.896434,42.512637]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0032__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p32 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6664.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0032__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0032","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"101.7,1876.8 225.2,1871.8 659.3,1801.1 1486.5,1663.9 1665.0,1636.7 1665.0,1635.2 1613.7,1631.3 1640.8,1329.4 1602.4,1003.0 1519.8,937.9 1528.8,709.9 957.0,645.0 881.8,527.5 909.4,365.1 733.6,102.6 745.8,168.6 104.3,159.8 103.9,415.4 102.3,1495.2 101.7,1876.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0032__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[105.0,1298.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89204920780769,42.51218402780638]}},{"type":"Feature","properties":{"resourceCoords":[1484.0,1668.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88862304416077,42.51187215771164]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0033","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1482.6,300.0 1449.6,689.8 1382.3,1483.4 1382.1,1648.9 1365.2,1832.8 1352.7,1969.0 1349.0,1969.0 1348.0,1978.0 1241.0,1978.0 903.5,1899.8 772.7,1901.7 668.2,1921.8 658.9,1875.1 132.9,1823.9 159.7,1469.0 193.4,1071.0 279.8,27.4 660.1,60.4 1465.3,130.2 1504.4,127.8 1503.8,133.6 1482.6,300.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0033/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1424.0,1164.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89405288079158,42.509397312156565]}},{"type":"Feature","properties":{"resourceCoords":[212.0,90.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89217343450753,42.5119282836356]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0034__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p34 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"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":"6676.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0034__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0034","type":"ImageService3","width":1669,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1115.2,1931.1 1159.0,1660.8 1190.7,1431.7 1225.8,1199.4 1256.2,994.2 1271.1,900.0 1261.7,898.7 1294.8,517.5 1239.8,531.9 1209.3,510.9 1201.5,505.6 977.2,384.4 926.5,316.8 896.8,296.4 896.9,277.3 779.5,120.8 307.4,91.2 264.6,277.3 266.5,457.9 279.3,1295.0 284.8,1734.2 271.4,1856.9 1069.1,1977.8 1108.1,1978.0 1115.2,1931.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0034__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[899.0,1400.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89037004974833,42.51031946614351]}},{"type":"Feature","properties":{"resourceCoords":[272.0,1294.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89055566366437,42.51144619465409]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p35","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0035","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"225.1,1384.0 229.8,1009.6 227.4,649.0 387.1,647.2 384.0,223.0 776.2,220.4 944.2,226.4 997.6,226.2 1272.6,227.7 1504.8,223.6 1509.0,617.0 1506.5,1754.2 951.4,1750.1 555.7,1746.5 228.3,1748.8 225.1,1384.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0035/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[384.0,223.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8929217,42.5095408]}},{"type":"Feature","properties":{"resourceCoords":[1509.0,617.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.890107,42.509112]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p36","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0036","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"97.7,264.3 97.7,239.9 330.9,240.4 490.9,240.3 536.9,240.3 631.5,241.2 631.4,231.7 1010.5,208.6 988.3,156.6 1008.5,115.3 1242.7,224.1 1365.0,430.8 1512.6,459.2 1512.0,838.0 1604.7,1093.6 1619.9,1361.0 1528.0,1742.0 1140.7,1824.3 442.8,1752.1 87.9,1752.9 98.9,628.9 97.7,264.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[464.0,1752.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8888412,42.5072044]}},{"type":"Feature","properties":{"resourceCoords":[95.0,1003.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8899884,42.5084449]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0037__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p37 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.71"},{"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":"6664.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0037__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0037","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1665.0,1309.0 1665.0,1295.7 1426.6,1280.8 1447.9,1144.2 1523.0,741.0 1562.0,554.5 1114.0,57.8 1107.8,146.0 641.1,48.1 463.1,66.8 427.0,135.7 167.9,62.8 58.6,785.0 17.6,770.2 17.3,808.1 17.2,822.0 102.5,869.4 128.3,1325.5 140.9,1325.5 149.1,1325.5 150.9,1288.4 207.8,1269.0 466.3,1265.9 522.2,1329.8 561.0,1913.8 989.2,1936.0 1082.6,1923.7 1162.3,1825.3 1591.0,1923.4 1641.2,1311.1 1665.0,1309.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0037__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[494.0,281.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.898784,42.507943]}},{"type":"Feature","properties":{"resourceCoords":[1559.0,571.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8960795,42.5077936]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p38","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0038","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"161.4,1930.6 116.8,1817.5 58.9,1830.2 72.8,1340.7 106.6,1345.8 107.0,1311.2 108.4,1174.8 110.4,990.9 97.3,826.6 100.2,33.6 521.6,34.9 521.8,193.5 880.0,194.8 1251.8,203.3 1614.2,203.8 1612.8,362.0 1561.6,357.6 1526.0,603.9 1621.8,1317.0 1608.3,1318.6 1604.8,1560.3 1465.7,1545.4 1054.3,1488.9 863.9,1458.5 383.3,1935.5 161.4,1930.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0038/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[485.0,1414.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89610450689536,42.50850639153414]}},{"type":"Feature","properties":{"resourceCoords":[885.0,565.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89392614148575,42.50801509619126]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0039__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p39 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"6664.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0039__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0039","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1630.4,1449.2 1529.8,1175.6 1518.2,1059.3 1514.0,369.5 1516.1,110.3 1123.6,103.9 798.8,104.0 640.8,103.0 602.3,570.5 524.0,650.8 524.0,668.0 507.2,668.0 504.5,670.8 538.7,751.7 461.0,763.5 405.1,1052.2 490.6,1201.1 585.4,1229.7 577.0,1289.3 680.4,1311.5 674.3,1516.0 595.5,1535.3 673.5,1629.9 673.9,1842.8 918.9,1885.0 1107.2,1789.9 1659.0,1874.1 1630.4,1449.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0039__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1523.0,112.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8910599386318,42.506982876278975]}},{"type":"Feature","properties":{"resourceCoords":[1523.0,1029.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89074879377011,42.505356035348974]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0039__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p39 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.35"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5478.8"},{"label":"split_canvas_w","value":"2348.0"},{"label":"split_canvas_h","value":"2437.2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0039__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0039","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"49.5,1900.4 109.1,1949.0 184.6,1949.2 233.1,1943.9 362.4,1901.1 373.1,1890.3 394.5,1858.0 410.5,1820.3 187.1,1372.6 186.2,1372.4 55.0,1373.2 30.5,1373.4 19.9,1377.6 18.1,1383.2 19.4,1685.9 49.5,1900.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0039__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1369.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.89292909353838,42.504264910787576]}},{"type":"Feature","properties":{"resourceCoords":[587.0,1369.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.89193557176407,42.50500044879025]}},{"type":"Feature","properties":{"resourceCoords":[587.0,1979.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.89090601355909,42.504233943654086]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1979.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.89189953533341,42.50349840565141]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p4","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0004","type":"ImageService3","width":1683,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"892.1,1808.5 892.1,1809.8 108.3,1766.6 113.1,1550.0 110.7,1262.0 117.7,799.9 120.7,704.9 235.9,684.2 492.9,327.5 494.2,147.3 761.9,98.6 990.3,184.7 1138.7,345.0 1526.8,355.1 1617.8,437.8 1582.4,1660.2 1519.5,1688.7 1516.1,1826.1 1289.7,1892.4 1187.3,1860.7 1186.3,1863.6 892.1,1808.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[920.0,1086.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8867018,42.5316839]}},{"type":"Feature","properties":{"resourceCoords":[116.0,889.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8883909,42.5324551]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0040__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p40 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"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":"6664.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0040__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0040","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"173.0,1506.2 199.4,1525.2 324.0,1847.3 926.9,1467.4 923.8,1406.0 994.5,1164.4 1496.3,1108.6 1523.5,1091.5 1590.2,811.0 1527.8,597.0 1575.7,580.7 1551.3,196.8 1653.9,174.4 1653.9,173.5 954.5,105.8 597.7,108.9 46.0,104.3 45.5,363.9 53.8,1055.0 66.1,1171.3 168.5,1444.8 173.0,1506.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0040__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[654.0,970.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88933451986823,42.50559516787946]}},{"type":"Feature","properties":{"resourceCoords":[61.0,115.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89103765311525,42.50696876587472]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0040__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p40 [2]","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":"4058.8"},{"label":"split_canvas_y","value":"4784.0"},{"label":"split_canvas_w","value":"2605.2"},{"label":"split_canvas_h","value":"3132.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0040__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0040","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1605.1,1925.5 1595.5,1923.0 1571.8,1819.7 1572.8,1476.8 1541.9,1351.1 1499.2,1254.8 1391.7,1302.9 1248.4,1303.0 1210.7,1213.1 1127.8,1243.1 1037.7,1827.6 1084.8,1952.2 1571.1,1896.2 1570.8,1930.1 1595.4,1926.8 1605.1,1925.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0040__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1014.7,1196.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.89742106376109,42.510516142941235]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,1196.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.89583988135115,42.5105154528443]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,1979.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.8958409977197,42.509105797939384]}},{"type":"Feature","properties":{"resourceCoords":[1014.7,1979.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.89742218012964,42.509106488036316]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p41","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.60"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0041","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1354.0,1583.2 1220.2,1518.7 1152.2,1645.6 875.5,1731.1 875.8,1710.0 448.8,1723.8 398.7,203.3 682.1,194.1 760.7,195.2 845.4,211.2 927.1,243.2 1155.3,371.8 1340.6,481.0 1473.7,552.0 1443.8,635.4 1439.2,683.4 1478.2,1346.7 1489.5,1541.3 1493.6,1612.3 1495.8,1650.8 1412.5,1611.4 1354.0,1583.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1452.0,1670.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90138452391588,42.52187456178201]}},{"type":"Feature","properties":{"resourceCoords":[837.0,1351.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90140738826958,42.52316846217707]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p42","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0042","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"263.8,1166.4 312.2,542.4 349.1,526.2 604.0,414.1 1240.5,133.3 1289.3,120.3 1381.9,119.2 1395.0,279.0 1365.8,919.1 1371.2,918.5 1338.2,1704.0 900.0,1781.4 900.0,1785.0 417.5,1877.0 246.9,1903.4 200.3,1218.6 169.7,1216.5 263.8,1166.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1395.0,279.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8987774,42.5225449]}},{"type":"Feature","properties":{"resourceCoords":[900.0,1785.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8994746,42.5197635]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p43","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0043","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"340.7,1044.0 322.8,951.2 289.5,828.9 202.3,414.9 385.1,406.3 558.0,397.1 1048.9,353.4 1049.2,349.8 1494.4,316.4 1432.6,749.1 1427.5,748.5 1405.0,1016.9 1384.8,1344.6 1388.8,1596.7 1151.0,1582.9 635.4,1572.3 587.8,1311.2 570.2,1192.5 548.3,1091.9 375.0,1153.5 340.7,1044.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0043/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[542.0,1077.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90025809575702,42.51830218376762]}},{"type":"Feature","properties":{"resourceCoords":[195.0,386.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90146030791382,42.5193539234505]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p44","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"},{"label":"confidence","value":"1.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0044","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1217.8,1978.0 1186.3,1978.0 1201.1,1904.8 107.5,1916.2 74.8,1741.6 10.0,1755.8 10.0,1742.5 104.5,1682.3 467.1,1474.8 361.2,1109.0 227.6,591.6 192.9,478.2 107.5,156.8 622.6,130.9 860.9,127.8 888.5,415.1 1009.5,359.1 1243.2,241.6 1444.0,147.9 1477.0,144.0 1462.3,250.4 1507.7,163.9 1520.3,144.7 1412.0,1475.8 1217.8,1978.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[603.0,748.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8983487,42.5165906]}},{"type":"Feature","properties":{"resourceCoords":[1477.0,144.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.896506,42.517904]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p45","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0045","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"943.8,1784.9 734.3,1745.9 633.9,1749.6 526.1,1776.0 312.5,1857.0 76.6,1473.8 18.4,638.4 18.0,514.1 18.6,505.2 23.2,487.1 25.2,466.9 23.0,440.4 23.0,358.7 36.1,358.2 59.2,127.5 499.1,171.8 495.9,193.3 791.4,143.5 878.5,22.7 1063.1,144.1 1143.1,195.8 1665.0,528.0 1665.0,633.4 1659.1,642.9 1630.0,699.4 1591.7,815.2 1572.0,895.6 1553.5,1053.9 1574.7,1281.5 1593.4,1413.7 1623.2,1568.5 1665.0,1738.8 1665.0,1905.8 1586.5,1898.3 1068.2,1789.2 1031.9,1786.7 943.8,1784.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0045/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[544.0,530.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90281074572738,42.52234441384106]}},{"type":"Feature","properties":{"resourceCoords":[858.0,22.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90135169726956,42.522420380296815]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p46","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0046/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0046","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1593.6,1772.2 1584.7,1836.8 1342.0,1774.9 1074.0,1698.0 929.2,1651.1 766.5,1612.8 531.1,1541.8 470.6,1530.3 375.5,1529.3 333.9,1530.4 314.1,1365.3 252.5,1202.0 204.6,1052.6 170.3,924.1 122.3,701.8 121.7,543.2 131.6,461.4 155.7,342.4 177.7,283.0 195.2,245.6 840.0,446.0 800.4,621.0 1214.5,646.7 1338.9,647.1 1431.3,654.4 1543.7,650.6 1590.5,1181.8 1608.2,1453.4 1626.8,1660.5 1593.6,1772.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0046/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1074.0,1698.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.903422,42.517929]}},{"type":"Feature","properties":{"resourceCoords":[840.0,446.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9010028,42.5193975]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0047__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p47 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"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":"6664.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0047__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0047","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"521.2,128.2 230.4,438.1 96.0,575.0 31.9,647.9 252.4,761.5 285.1,868.1 170.3,1105.3 479.1,1114.3 626.3,1219.1 812.8,1478.2 937.7,1796.8 1184.9,1821.4 1382.3,1930.5 1536.0,1886.7 1577.2,1904.3 1571.8,612.8 1575.5,612.1 1464.0,575.0 1399.1,563.9 1469.3,321.4 1555.3,53.6 1438.9,79.5 1077.1,144.6 719.5,203.4 644.5,211.1 601.1,195.2 521.2,128.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0047__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1586.0,1174.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.901962,42.516225]}},{"type":"Feature","properties":{"resourceCoords":[96.0,575.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9058333,42.5157829]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p48","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0048/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0048","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"576.3,1915.1 105.1,1631.3 79.8,1396.8 228.8,1351.6 234.4,1353.7 275.6,1371.7 278.2,74.7 282.0,74.0 492.3,63.1 767.9,55.7 1307.3,28.7 1490.0,22.5 1480.5,124.4 1461.5,242.1 1428.0,503.5 1389.0,831.5 1379.3,948.9 1313.0,1475.5 1276.5,1851.9 865.7,1910.5 756.4,1931.3 751.5,1943.7 576.3,1915.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0048/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1356.0,1125.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8991318,42.5164643]}},{"type":"Feature","properties":{"resourceCoords":[282.0,74.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.902684,42.517084]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p49","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0049/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0049","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"628.1,1711.3 537.1,1589.7 438.2,1456.8 390.0,1379.5 336.3,1253.0 319.6,1193.5 284.8,1010.1 263.1,864.5 232.2,741.8 127.1,402.9 55.6,232.6 386.2,69.5 484.2,202.9 551.6,262.1 614.4,299.8 650.4,213.7 659.0,197.0 1472.7,90.5 1471.0,94.0 1453.0,304.3 1437.3,489.0 1469.1,491.1 1526.0,1153.8 1469.1,1143.5 1480.0,1821.5 1314.9,1819.6 866.8,1793.7 787.5,1831.4 744.5,1862.2 628.1,1711.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[451.0,1278.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90940116377693,42.519184623804435]}},{"type":"Feature","properties":{"resourceCoords":[727.0,1811.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90812955647579,42.51866064971223]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p5","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0005","type":"ImageService3","width":1688,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1270.5,1826.4 409.7,1507.4 409.8,1506.6 157.9,1684.3 106.0,1406.9 165.3,1135.8 121.5,916.6 190.2,440.2 292.6,339.9 254.4,237.8 564.2,262.2 563.9,265.0 1234.6,274.8 1234.6,272.1 1580.3,277.6 1598.2,1049.2 1620.4,1124.6 1614.8,1329.1 1594.1,1361.7 1590.1,1663.6 1548.0,1950.7 1270.5,1826.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1242.0,795.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8908888,42.5288832]}},{"type":"Feature","properties":{"resourceCoords":[1594.0,1545.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8906821,42.527427]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p50","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0050","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"959.0,1867.8 599.9,1853.8 269.1,1844.5 269.5,1163.3 326.5,1174.6 280.4,508.0 248.5,505.4 288.9,109.2 315.9,53.4 308.4,18.0 371.0,18.0 371.7,12.9 395.0,11.0 417.0,6.8 417.0,8.0 422.4,8.7 417.0,17.2 747.1,178.8 1119.3,157.9 1137.1,131.9 1281.7,156.3 1306.7,153.4 1470.7,747.7 1401.4,742.5 1578.4,901.5 1529.9,906.1 1147.4,1154.6 1234.8,1369.1 1264.1,1477.7 1270.4,1579.3 1236.0,1792.6 1236.4,1882.0 959.0,1867.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[977.0,195.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90742794586238,42.522522894268974]}},{"type":"Feature","properties":{"resourceCoords":[1280.0,1854.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90456106999086,42.52038894542963]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p51","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0051/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0051","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"224.3,1961.0 213.9,1961.0 99.2,1184.2 122.6,827.1 108.7,378.5 96.5,69.0 450.0,122.5 574.9,148.3 716.4,192.5 898.0,241.4 959.3,252.4 1097.6,259.1 1188.9,249.4 1352.8,218.0 1493.5,190.7 1508.2,271.9 1519.3,453.9 1534.2,640.3 1593.5,741.9 1665.0,1136.1 1665.0,1431.4 1656.4,1423.5 1543.2,1312.0 1503.0,1272.9 1584.3,1779.0 1593.7,1771.0 1665.0,1836.0 1665.0,1841.3 1665.0,1842.7 1645.9,1835.6 1587.0,1914.9 1421.5,1933.8 1175.7,1788.3 862.8,1842.0 404.2,1814.3 227.9,1919.2 227.8,1961.0 224.3,1961.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0051/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[114.0,825.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.91212221400538,42.51900299653493]}},{"type":"Feature","properties":{"resourceCoords":[1094.0,667.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90989897401089,42.51835404994767]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0052__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p52 [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":"6716.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0052__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0052","type":"ImageService3","width":1679,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"29.5,1134.5 13.2,1261.0 20.0,1261.0 20.0,1283.0 14.7,1283.8 15.3,1292.5 20.0,1296.0 21.0,1327.0 20.7,1373.8 78.9,1454.6 232.9,1702.5 118.6,1763.5 154.5,1845.5 447.6,1931.3 555.9,1828.3 483.3,1520.3 530.6,1191.7 784.8,1178.3 957.3,1217.0 1065.3,1217.0 1119.0,1217.0 1119.0,1217.0 1119.0,1218.4 1119.0,1253.3 1171.7,1265.2 1212.2,1867.2 1594.0,1932.1 1619.9,1502.7 1616.6,1387.0 1618.6,1194.1 1613.4,767.2 1609.2,633.4 1585.0,433.9 1548.4,378.8 1527.9,276.9 1527.4,214.6 1092.2,168.1 896.8,143.0 370.7,63.1 180.0,44.5 115.5,300.2 73.3,481.1 99.1,594.8 47.5,994.8 17.3,1089.8 17.1,1109.2 29.5,1134.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0052__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.90886090293978,42.5188634520163]}},{"type":"Feature","properties":{"resourceCoords":[1679.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.90491956853673,42.51817394549089]}},{"type":"Feature","properties":{"resourceCoords":[1679.0,1979.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.90601444755474,42.51472564004646]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1979.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.90995578195779,42.515415146571875]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0052__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p52 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.74"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2512.0"},{"label":"split_canvas_y","value":"4868.0"},{"label":"split_canvas_w","value":"1964.0"},{"label":"split_canvas_h","value":"3048.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0052__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0052","type":"ImageService3","width":1679,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"990.6,1239.5 689.3,1651.8 701.6,1652.7 701.2,1753.5 753.1,1867.5 909.9,1900.0 904.4,1978.0 1034.4,1978.0 1012.9,1686.0 998.8,1587.0 1044.6,1483.3 1118.0,1378.4 1118.0,1357.7 1118.0,1342.8 992.9,1466.5 992.4,1453.5 991.2,1295.3 990.6,1239.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0052__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[628.0,1217.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.91065637650237,42.51693627655142]}},{"type":"Feature","properties":{"resourceCoords":[1119.0,1217.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.90951335381301,42.5171538736355]}},{"type":"Feature","properties":{"resourceCoords":[1119.0,1979.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.90905841167648,42.515837137608976]}},{"type":"Feature","properties":{"resourceCoords":[628.0,1979.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.91020143436585,42.515619540524895]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p53","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0053/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0053","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1431.5,1465.5 1273.7,1340.8 1208.9,1327.3 1122.4,1269.3 1078.0,1225.5 737.4,1496.8 581.4,1615.7 152.8,1926.8 120.9,1884.5 81.1,1806.2 95.8,1357.2 89.0,862.5 88.2,504.5 90.7,227.8 127.5,228.0 656.9,303.3 778.6,306.9 875.0,313.1 935.6,328.1 1170.2,412.9 1333.0,460.6 1477.0,516.0 1500.5,633.7 1557.9,998.9 1609.0,1359.8 1615.1,1435.5 1598.2,1478.7 1529.0,1557.5 1431.5,1465.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0053/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1017.0,361.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90369403359837,42.51877332147254]}},{"type":"Feature","properties":{"resourceCoords":[91.0,874.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90593899950095,42.519691827478624]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p54","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0054/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0054","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1112.5,1906.7 1104.3,1941.9 1059.3,1978.0 281.0,1707.9 265.8,1719.0 195.3,1780.2 155.6,1718.1 121.3,1634.6 92.2,1470.6 78.2,1220.8 63.2,171.0 61.9,84.5 536.9,63.0 609.0,46.3 821.5,53.7 858.0,146.7 1025.0,163.7 1389.1,39.8 1470.2,89.3 1501.1,352.4 1579.0,456.4 1503.9,702.1 1500.8,1116.8 1392.4,1320.4 1491.7,1491.0 1490.0,1773.1 1220.1,1947.0 1214.8,1944.7 1193.6,1937.8 1112.5,1906.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0054/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.91432379791918,42.52210539402022]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.91230487229676,42.52468183578526]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,1979.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.90818139408873,42.522901841774946]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1979.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.91020031971115,42.52032540000991]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0055__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p55 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.98"},{"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":"6664.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0055__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0055","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"139.2,42.7 254.7,170.2 293.9,205.1 285.5,303.1 160.8,404.4 73.3,454.9 104.7,652.6 144.9,878.6 165.4,1042.1 168.5,1217.7 160.8,1709.9 161.1,1763.7 162.9,1938.1 163.1,1957.0 167.7,1956.9 168.0,1956.0 233.0,1956.0 264.9,1978.0 759.4,1775.5 759.0,1256.0 1113.5,1248.0 1113.3,1396.3 1113.2,1415.3 1584.4,1399.8 1628.8,1390.2 1656.2,1384.2 1655.0,1384.2 1654.3,388.6 1590.6,106.7 1316.9,62.8 1203.9,152.0 1099.9,150.2 1012.2,70.6 755.4,25.9 287.9,65.0 247.5,17.0 132.7,22.4 132.0,23.0 123.4,22.9 139.2,42.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0055__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[759.0,1256.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.914836,42.521709]}},{"type":"Feature","properties":{"resourceCoords":[759.0,1924.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.913412,42.52112]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p56","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0056/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0056","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"406.9,783.4 438.6,805.5 933.0,606.4 935.6,88.2 1289.3,82.2 1288.2,230.2 1287.2,334.3 1277.1,1368.7 1285.0,1615.0 920.0,1606.3 904.6,1788.6 600.1,1791.2 159.0,1791.0 175.2,1495.7 296.4,1500.8 374.2,1484.8 344.9,1410.1 338.2,959.1 337.2,784.0 406.9,783.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0056/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[159.0,1791.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.912107,42.518992]}},{"type":"Feature","properties":{"resourceCoords":[1285.0,1615.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9111478,42.5209253]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0057/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p57","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0057/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0057","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1477.2,117.3 1494.8,135.9 1622.3,254.6 1665.0,286.3 1665.0,319.7 1665.0,385.9 1547.9,499.0 1464.0,557.5 1512.8,754.3 1573.0,978.8 1607.9,1142.0 1626.2,1318.9 1661.1,1816.0 1665.0,1870.3 1483.8,1872.0 1009.4,1886.0 804.5,1889.6 447.7,1889.7 286.1,1882.8 62.1,1882.3 62.9,1842.2 155.9,1782.5 65.5,1541.5 41.2,494.5 76.6,222.9 260.4,88.8 556.4,25.1 1532.2,31.0 1601.8,100.6 1477.2,117.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0057/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[748.0,1875.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.91570570763741,42.51896647030405]}},{"type":"Feature","properties":{"resourceCoords":[1380.0,-67.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9187249154175,42.52183908469697]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p58","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0058","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1491.4,1412.8 1501.5,1530.5 1578.4,1556.0 1558.3,1762.2 964.2,1908.6 766.9,1918.7 633.0,1856.2 578.9,1914.5 287.8,1900.2 121.0,1857.0 42.2,1714.1 82.4,1717.5 97.6,1493.0 115.0,1331.5 138.2,974.0 148.1,768.4 165.1,292.1 175.3,109.2 352.6,103.8 550.2,97.5 1009.8,78.6 1085.1,46.7 1103.5,125.6 1101.5,249.2 1403.0,257.9 1377.8,615.6 1488.8,1394.7 1502.7,1394.8 1491.4,1412.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0058/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1358.0,693.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.91273065013962,42.51836799962254]}},{"type":"Feature","properties":{"resourceCoords":[1064.0,244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.91279231441794,42.519317719169386]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0059/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p59","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0059/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0059","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"45.6,790.0 79.8,760.5 219.8,677.2 291.4,644.1 672.2,544.1 743.9,510.2 851.9,423.3 848.5,340.4 831.1,196.8 824.1,75.6 954.0,108.0 1094.0,132.4 1214.7,162.2 1346.9,212.9 1389.5,231.8 1536.3,341.9 1602.3,397.4 1605.5,634.1 1603.6,739.9 1604.3,1536.2 1605.8,1833.7 1177.1,1813.2 1177.0,1825.0 899.7,1824.5 899.9,1804.5 201.4,1736.5 102.3,1418.7 166.5,1334.4 162.2,1179.5 80.2,1067.0 73.8,880.1 19.4,859.7 45.6,790.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0059/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[482.0,592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.909715,42.525801]}},{"type":"Feature","properties":{"resourceCoords":[1177.0,1825.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9064749,42.5249702]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p60","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0060","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"263.6,1768.2 331.3,1780.9 234.5,1176.9 209.5,1177.1 69.6,1137.1 181.5,1007.0 93.6,901.7 168.7,837.4 108.0,527.5 168.4,480.3 118.5,327.2 814.5,386.1 814.6,406.0 1090.6,403.0 1090.5,391.3 1517.4,406.3 1523.2,741.2 1520.3,1256.1 1530.9,1257.2 1503.9,1796.9 1495.4,1966.8 1375.0,1968.0 1374.1,1976.8 1365.7,1975.2 1365.0,1969.0 1348.0,1969.0 1275.5,1958.3 420.8,1944.3 263.6,1768.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0060/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[815.0,754.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90642657322138,42.524170096019624]}},{"type":"Feature","properties":{"resourceCoords":[1521.0,754.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90512289096974,42.5249960855177]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p61","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0061","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"227.8,144.1 289.4,391.7 349.2,654.8 366.3,831.9 362.1,907.4 339.4,1010.8 283.9,1173.2 253.1,1248.0 93.7,1576.2 45.8,1667.9 21.2,1700.0 22.0,1728.0 1.0,1730.9 1.0,1731.2 9.0,1733.0 9.0,1756.0 1.0,1756.9 1.0,1777.0 8.0,1777.0 9.0,1807.0 1.0,1807.9 1.0,1822.1 9.0,1823.0 9.0,1839.0 1.0,1839.9 1.0,1846.1 9.0,1847.0 9.0,1893.4 70.4,1922.2 175.4,1923.7 965.5,1920.2 1594.6,1915.0 1635.0,1915.6 1627.1,1492.5 1647.2,1096.0 1653.4,648.8 1655.3,648.8 1627.4,69.7 1619.5,70.0 1439.3,75.5 1236.3,89.8 995.4,88.3 524.6,107.5 227.8,144.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0061/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[989.0,1093.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90460284640851,42.52681120304769]}},{"type":"Feature","properties":{"resourceCoords":[1341.0,98.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90220769036486,42.52751449058353]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0062/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p62","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0062/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0062","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1219.5,142.7 1582.3,217.1 1224.8,1963.3 1026.4,1950.2 497.4,1915.0 496.1,1925.3 30.7,1915.2 26.0,1498.7 48.6,1108.5 57.9,668.3 59.8,668.4 36.4,98.2 115.7,96.2 163.2,95.5 709.0,100.3 1119.7,107.0 1216.9,101.9 1219.5,142.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0062/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[597.0,1117.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.902661,42.525156]}},{"type":"Feature","properties":{"resourceCoords":[679.0,418.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.901229,42.525893]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0063/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p63","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0063/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0063","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1656.0,1258.5 1665.0,1261.7 1665.0,1590.2 1653.2,1649.3 1665.0,1681.2 1665.0,1716.2 1665.0,1765.1 1653.3,1776.9 1621.3,1814.7 1620.5,1813.8 1619.6,1813.0 1513.4,1719.0 1410.5,1648.6 1287.7,1576.5 1177.3,1500.5 1141.3,1616.7 1107.2,1757.6 1081.2,1836.5 949.4,1880.1 870.2,1886.7 477.8,1846.8 398.9,1852.8 238.3,1881.7 195.8,1897.3 146.8,1953.5 62.5,1880.2 46.5,1785.8 66.6,1132.0 147.6,994.5 79.1,705.2 96.5,464.5 168.2,357.6 140.2,192.6 935.5,60.0 1164.2,135.2 1537.2,30.6 1606.7,96.5 1565.2,452.9 1646.7,589.6 1665.0,579.8 1665.0,670.8 1655.9,696.7 1656.0,1258.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0063/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[685.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90972242807202,42.52582435737672]}},{"type":"Feature","properties":{"resourceCoords":[685.0,247.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9131570996351,42.52717411833525]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0064/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p64","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0064/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0064","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1482.5,133.4 1481.5,185.5 1567.0,234.2 1566.7,234.5 1588.1,694.0 1609.0,694.2 1582.8,1133.6 1523.6,1198.1 1491.6,1804.3 1129.4,1814.5 1012.6,1936.2 523.9,1928.2 153.5,1791.2 143.8,1651.3 79.1,1630.4 142.8,157.4 366.6,149.6 443.5,73.4 624.6,49.1 673.0,112.7 827.9,29.4 1295.8,63.9 1464.8,126.8 1482.5,133.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0064/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[724.0,725.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.901228,42.505594]}},{"type":"Feature","properties":{"resourceCoords":[1372.0,510.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.899785,42.506206]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0065/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p65","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0065/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0065","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"182.7,534.7 1599.5,36.1 1615.0,805.1 1613.0,1371.0 1633.1,1689.5 1665.0,1706.5 1665.0,1792.4 1139.3,1978.0 989.0,1978.0 915.8,1910.9 178.4,1943.2 73.0,1856.8 54.4,578.1 151.9,482.9 154.5,467.8 182.7,534.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0065/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[795.0,319.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.908688,42.530773]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1371.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.909228,42.52843]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0066/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p66","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0066/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0066","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"53.8,1946.1 79.5,1624.2 163.0,1057.8 258.1,285.2 506.6,233.6 571.0,223.1 1120.0,118.0 1549.9,24.9 1570.4,284.8 1586.5,559.9 1574.0,741.2 1557.1,816.5 1516.8,917.0 1433.7,1071.2 1390.0,1141.5 1174.3,1445.3 1110.7,1529.7 1054.5,1582.3 1034.6,1701.5 1035.8,1750.7 1092.8,1790.0 855.5,1754.6 789.2,1811.6 655.1,1940.5 630.6,1978.0 628.4,1978.0 626.0,1978.0 586.9,1953.7 572.8,1944.5 489.6,1961.0 462.0,1978.0 234.0,1978.0 233.0,1954.0 168.0,1957.0 166.0,1963.0 165.0,1954.0 63.5,1953.2 53.8,1946.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0066/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1487.0,975.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9056403,42.5277427]}},{"type":"Feature","properties":{"resourceCoords":[492.0,1295.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.907966,42.528418]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p67","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0067/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0067","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"137.4,1539.5 128.5,22.9 136.0,23.0 138.3,22.3 201.7,18.1 299.6,71.9 1193.9,247.4 1514.0,212.9 1600.7,356.9 1524.7,537.1 1649.2,895.2 1626.3,1446.2 1512.5,1620.8 1504.7,1798.8 1188.2,1840.0 1004.2,1939.7 1110.9,1668.3 1051.5,1677.8 650.0,1711.7 379.0,1777.3 196.4,1794.4 141.1,1792.8 137.4,1539.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0067/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[137.0,274.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9095351674162,42.53112025522084]}},{"type":"Feature","properties":{"resourceCoords":[137.0,1816.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90628588454949,42.529822690222026]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0068__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p68 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"3236.0"},{"label":"split_canvas_w","value":"6664.0"},{"label":"split_canvas_h","value":"4680.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0068__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0068","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1504.1,1124.4 1537.5,1008.5 1259.0,863.6 1278.3,913.5 1176.1,961.0 578.5,1000.5 604.7,1029.7 547.4,998.2 296.6,860.4 298.3,919.5 281.1,1314.7 311.2,1586.8 305.0,1766.7 296.5,1820.3 359.7,1830.2 902.9,1900.4 1331.4,1945.3 1313.2,1856.8 1316.0,1782.0 1373.7,1629.0 1394.5,1545.2 1412.6,1473.3 1439.9,1365.0 1504.1,1124.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0068__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1436.0,1353.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90332427777754,42.52989354923702]}},{"type":"Feature","properties":{"resourceCoords":[257.0,1292.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.90595496555572,42.53076072476715]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p69","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0069","type":"ImageService3","width":1666,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"97.2,283.8 165.4,251.7 329.0,232.6 413.6,212.4 595.8,169.7 840.6,116.0 1098.0,65.0 1098.0,1443.0 1415.0,1440.8 1665.0,1482.8 1665.0,1485.3 1635.6,1485.2 1581.5,1739.8 1512.5,1749.3 1458.0,1919.4 1098.0,1921.9 606.4,1893.3 96.0,1881.6 95.3,1833.0 93.0,1743.8 88.5,1562.3 75.2,1357.6 78.1,1114.8 61.5,640.2 26.4,340.9 97.2,283.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0069/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1098.0,1443.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9003679,42.5287634]}},{"type":"Feature","properties":{"resourceCoords":[1098.0,65.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.902583,42.530606]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p6 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.99"},{"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":"5250.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0006","type":"ImageService3","width":1671,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"102.0,1715.0 175.6,1716.9 319.2,1734.5 535.1,1771.5 903.8,1820.9 1195.2,1853.5 1233.2,1859.9 1311.5,1723.4 1298.5,1697.2 1269.3,880.4 1169.5,359.7 1259.0,217.8 1281.5,211.1 1179.0,179.9 1178.0,182.8 884.0,129.2 884.0,130.4 101.0,91.0 95.1,610.5 96.0,944.8 102.0,1715.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[454.8,837.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8888149,42.5295322]}},{"type":"Feature","properties":{"resourceCoords":[102.0,1715.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8902821,42.5282522]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p7","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0007","type":"ImageService3","width":1671,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1460.7,1945.5 1404.5,1929.5 373.5,1411.3 362.8,1124.4 336.1,835.9 268.9,541.9 281.3,505.4 238.7,305.5 199.4,237.6 271.2,220.9 414.9,202.0 633.4,183.7 1003.0,139.0 1293.7,97.5 1347.5,92.9 1493.3,86.6 1342.5,508.1 1200.5,940.2 1551.8,1169.3 1533.7,1323.4 1501.8,1462.2 1482.8,1615.2 1670.0,1632.6 1670.0,1688.3 1526.7,1670.1 1670.0,1721.2 1670.0,1740.6 1478.0,1672.2 1460.7,1945.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[788.0,671.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8896579,42.5270434]}},{"type":"Feature","properties":{"resourceCoords":[1003.0,139.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8885321,42.5276286]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p70","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0070/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0070","type":"ImageService3","width":1673,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"153.7,1898.0 156.2,506.0 16.6,533.4 17.0,480.0 16.9,458.4 17.0,458.0 18.1,214.1 83.4,140.7 585.6,138.2 661.7,52.7 1190.6,43.3 1260.8,136.4 1494.6,160.5 1508.5,305.6 1589.5,306.2 1648.3,848.4 1592.9,1840.3 1274.9,1945.4 727.3,1941.8 726.3,1941.8 473.9,1896.3 153.7,1898.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0070/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[969.0,1525.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.89950045892824,42.53021446653453]}},{"type":"Feature","properties":{"resourceCoords":[154.0,1525.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9009620329578,42.529256682051034]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0071__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p71 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"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":"6692.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0071__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0071","type":"ImageService3","width":1673,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1179.3,1729.8 1251.7,1736.3 1241.1,1781.0 1271.0,1739.4 1567.4,1786.5 1669.1,1168.8 1646.7,1150.4 1630.8,824.5 1574.1,738.9 938.0,656.4 483.0,722.5 319.5,588.2 307.6,138.6 114.2,409.8 87.5,402.4 103.5,762.0 93.2,1254.6 100.7,1765.2 659.5,1748.5 1080.0,1739.0 1179.3,1729.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0071__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[425.0,750.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.899081,42.527693]}},{"type":"Feature","properties":{"resourceCoords":[425.0,1755.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.900963,42.526554]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0072__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p72 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"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":"6692.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0072__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0072","type":"ImageService3","width":1673,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1591.2,1825.9 1577.9,1825.7 1575.7,1569.2 1468.2,1611.5 1504.5,535.1 1566.8,530.0 1563.2,123.5 840.1,23.4 607.9,103.2 271.9,58.1 196.2,102.8 163.8,162.4 249.4,226.1 615.3,184.5 615.6,189.2 617.5,189.0 617.5,220.4 628.3,397.6 617.5,490.4 601.4,494.6 250.5,492.8 296.9,518.0 250.6,587.3 152.5,594.1 87.7,713.4 34.0,1302.2 91.7,1891.5 309.1,1949.5 1278.1,1840.5 1411.2,1895.7 1446.7,1846.2 1488.3,1911.8 1577.3,1874.3 1588.1,1836.6 1591.2,1825.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0072__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1490.0,536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.86665062658436,42.53466517036768]}},{"type":"Feature","properties":{"resourceCoords":[1047.0,586.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.86727042461517,42.53531871817371]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p73","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0073/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0073","type":"ImageService3","width":1675,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"318.9,1968.0 311.5,1704.6 201.9,1750.2 217.6,643.5 281.4,637.1 269.6,219.5 289.5,221.8 1101.4,171.1 1434.6,387.3 1525.4,582.7 1568.9,936.9 1487.0,1566.7 1209.3,1597.4 1092.4,1772.5 977.5,1809.0 720.8,1815.7 448.9,1919.3 355.9,1879.8 332.5,1968.0 318.9,1968.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0073/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[849.0,982.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8666557129122,42.53339630916769]}},{"type":"Feature","properties":{"resourceCoords":[849.0,625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.86590700419046,42.533682093205805]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0074/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p74","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0074/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0074","type":"ImageService3","width":1650,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"61.8,367.9 165.7,386.8 126.7,796.9 66.5,832.9 74.8,1914.6 199.8,1951.4 1549.8,1865.3 1570.2,117.2 810.0,49.2 809.1,1.0 785.5,1.0 187.8,349.1 73.6,20.1 48.5,20.4 61.8,367.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0074/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[226.0,566.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88966507449513,42.50359339298965]}},{"type":"Feature","properties":{"resourceCoords":[164.0,238.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88994480391345,42.50414830382746]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p8","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0008","type":"ImageService3","width":1671,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"524.1,1823.7 543.1,1681.5 546.9,1525.1 173.0,1328.0 275.0,881.1 387.0,444.0 241.2,464.0 225.8,466.7 258.7,280.9 671.6,140.4 1459.2,98.7 1522.2,168.7 1507.0,308.9 1466.2,990.7 1446.7,1387.6 1418.3,1718.2 1407.5,1886.8 1386.8,1966.8 1160.0,1969.0 1159.0,1978.0 519.4,1978.0 524.1,1823.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[173.0,1328.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8891753,42.5262476]}},{"type":"Feature","properties":{"resourceCoords":[387.0,444.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.8874743,42.5272366]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0009__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Salem, Massachusetts | 1906 | sanborn03836_002 p9 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6684.0"},{"label":"split_canvas_h","value":"7916.0"}],"created":"2026-10-24T15:04:59Z","modified":"2026-10-24T15:04:59Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0009__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0009","type":"ImageService3","width":1671,"height":1979},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1312.4,79.3 1208.0,171.2 724.7,639.4 446.4,914.9 205.8,1136.3 85.8,1251.7 18.1,1295.7 18.1,1311.0 26.0,1333.4 18.2,1336.6 18.8,1458.3 19.4,1588.2 127.2,1675.4 135.7,1731.7 210.1,1956.2 229.0,1956.0 229.3,1958.0 291.1,1963.8 304.0,1964.0 313.9,1966.0 465.9,1880.3 626.5,1766.8 818.9,1618.8 933.9,1519.5 1040.3,1413.3 1129.3,1310.6 1202.3,1202.5 1241.1,1131.5 1294.7,1026.8 1480.2,633.1 1535.8,488.1 1592.8,355.7 1670.0,206.3 1670.0,119.8 1512.4,62.5 1312.1,100.4 1312.4,79.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764sm:g038361906:03836_1906-0009__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1303.0,1033.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88478953698515,42.52469114222357]}},{"type":"Feature","properties":{"resourceCoords":[143.0,1654.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.88747168395356,42.52343094103603]}}]}}]}