{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03745_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Haverhill, 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":"100"},{"label":"placed","value":"72"},{"label":"unplaced","value":"28"},{"label":"fit sources","value":"georef-snap 40, georef 36"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"9 sheet(s) cut into 22 panels"},{"label":"unplaced pages","value":"p31__2 (tier 1, 42.77732,-71.07086 +/-112m); p32__2 (tier 1, 42.78005,-71.06807 +/-100m); p34__1 (tier 1, 42.77199,-71.06406 +/-177m); p57__1 (tier 3, 42.76655,-71.06535 +/-516m); p57__2 (tier 1, 42.76793,-71.06820 +/-117m); p57__3 (tier 1, 42.76568,-71.06637 +/-140m); p74 (tier 1, 42.77750,-71.07828 +/-304m); p75 (tier 1, 42.77812,-71.07616 +/-249m); p76 (tier 1, 42.77608,-71.07539 +/-258m); p77 (tier 4, 42.77617,-71.08146 +/-2911m); p78__1 (tier 4, 42.77617,-71.08146 +/-2911m); p78__2 (tier 4, 42.77617,-71.08146 +/-2911m); p79__1 (tier 4, 42.77617,-71.08146 +/-2911m); p79__2 (tier 4, 42.77617,-71.08146 +/-2911m); p79__3 (tier 1, 42.76906,-71.05774 +/-196m); p80__1 (tier 1, 42.79122,-71.07077 +/-100m); p80__2 (tier 3, 42.78994,-71.07225 +/-516m); p80__3 (tier 1, 42.79065,-71.07085 +/-125m); p81__1 (tier 4, 42.77617,-71.08146 +/-2911m); p81__2 (tier 4, 42.77617,-71.08146 +/-2911m); p82 (tier 1, 42.76637,-71.07890 +/-261m); p83__1 (tier 4, 42.77617,-71.08146 +/-2911m); p83__2 (tier 4, 42.77617,-71.08146 +/-2911m); p83__3 (tier 4, 42.77617,-71.08146 +/-2911m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p1","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0001","type":"ImageService3","width":1626,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"92.6,1645.2 50.4,1012.9 87.6,828.8 150.8,790.8 101.6,665.0 162.9,616.5 163.2,315.4 263.9,367.4 361.9,253.3 446.6,275.9 540.3,167.9 674.2,144.2 694.3,114.8 646.4,68.5 862.9,46.2 865.4,121.1 1101.6,240.5 1301.0,242.8 1530.5,384.9 1562.8,336.6 1479.4,828.5 1453.2,829.1 1440.1,1001.5 1436.8,1080.2 1432.3,1184.1 1430.0,1383.0 1549.3,1386.5 1544.0,1466.7 1547.8,1577.0 1563.0,1719.0 1383.8,1741.4 1175.7,1762.5 931.0,1792.6 583.8,1805.9 442.4,1812.7 285.7,1812.2 160.6,1787.0 28.7,1736.7 92.6,1645.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1563.0,1719.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.095991,42.768163]}},{"type":"Feature","properties":{"resourceCoords":[1430.0,1383.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.096731,42.768522]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0010","type":"ImageService3","width":1624,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"154.3,1440.7 126.3,513.4 157.4,494.6 316.2,155.2 326.7,78.5 335.8,11.5 379.3,11.3 429.1,62.1 741.7,365.4 962.4,576.9 1186.8,782.3 1347.1,945.2 1394.8,1002.9 1456.2,1101.7 1494.3,1266.7 1592.3,1254.0 1545.0,1671.7 1514.5,1665.6 1381.8,1752.0 811.5,1853.9 286.9,1876.0 259.7,1899.8 184.0,1901.0 177.2,1919.0 94.3,1449.3 139.9,1442.8 154.3,1440.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[969.0,590.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08454846980274,42.77455336580778]}},{"type":"Feature","properties":{"resourceCoords":[220.0,1438.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08575902192275,42.772705814425194]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0011","type":"ImageService3","width":1624,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"53.2,346.6 119.6,95.6 286.3,29.4 950.3,173.9 1579.0,721.6 1529.7,932.8 1513.0,1102.2 1502.6,1635.5 1234.8,1651.9 1167.1,1654.7 978.3,1674.6 864.0,1679.2 769.4,1692.7 682.5,1725.9 366.1,1899.0 268.9,1898.4 224.3,1763.7 193.1,1653.5 148.1,1439.3 125.6,1297.9 111.2,1155.0 104.9,1032.3 76.9,661.2 77.9,385.9 82.6,347.1 53.2,346.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[826.0,1680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.09165356336143,42.77337896596386]}},{"type":"Feature","properties":{"resourceCoords":[418.0,464.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.09446966961758,42.774458297326426]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0012","type":"ImageService3","width":1619,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1313.7,775.5 1377.3,891.1 1393.0,969.4 1392.7,1048.3 1374.7,1226.9 1283.9,1894.1 1057.2,1864.5 465.9,1783.4 463.4,1516.7 459.2,1416.5 421.5,1260.1 210.0,691.1 150.3,343.9 122.8,142.7 271.2,127.3 728.2,63.9 873.0,49.0 902.8,45.9 957.9,40.2 1104.6,17.6 1306.4,19.4 1351.6,55.8 1411.3,103.9 1618.0,412.3 1618.0,414.2 1618.0,448.3 1518.7,392.7 1313.7,775.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[976.0,1418.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08942168391091,42.77378061792653]}},{"type":"Feature","properties":{"resourceCoords":[180.0,602.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08947873921001,42.775865446264106]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p13","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0013","type":"ImageService3","width":1624,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"596.3,74.5 752.0,66.2 705.0,327.0 914.4,407.8 1426.9,617.5 1414.1,979.0 1372.2,1155.1 1462.7,1327.1 1524.2,1456.8 1525.9,1460.1 984.0,1642.6 978.8,1614.6 632.6,1708.2 634.8,1717.2 418.8,1800.2 427.1,1751.6 355.1,1643.5 190.9,1603.8 161.7,1506.2 142.3,617.8 67.4,365.5 177.9,158.1 571.2,64.4 596.3,74.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[705.0,327.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.092654,42.779563]}},{"type":"Feature","properties":{"resourceCoords":[1418.0,-18.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.091122,42.780487]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p14","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0014","type":"ImageService3","width":1619,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"97.8,1236.3 107.2,1066.4 147.3,853.3 204.0,898.5 302.1,787.3 395.1,255.8 432.7,206.9 664.9,234.7 667.2,225.7 1020.8,305.3 1012.2,332.8 1582.7,425.4 1580.5,537.4 1577.0,675.1 1599.2,791.0 1534.5,834.2 1493.2,892.3 1465.2,1001.1 1447.1,1155.7 1454.0,1297.4 1255.0,1344.1 913.0,1437.0 363.3,1703.1 210.2,1755.8 110.2,1769.5 97.8,1236.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[913.0,1437.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.089576,42.775709]}},{"type":"Feature","properties":{"resourceCoords":[102.0,1129.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0915871,42.7751534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0015","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"70.5,1262.6 79.8,529.2 149.2,146.2 331.8,186.7 710.5,33.1 1157.6,124.5 1210.2,59.5 1451.2,44.0 1592.8,96.2 1598.8,164.2 1580.3,163.6 1627.0,857.3 1627.0,1578.9 909.2,1714.4 904.7,1821.7 378.6,1618.1 163.8,1539.9 206.5,1273.3 48.1,1284.8 22.3,1275.0 70.5,1262.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[205.0,1265.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.09270104757154,42.78006310084962]}},{"type":"Feature","properties":{"resourceCoords":[162.0,1543.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.09265646020751,42.77955678995944]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0016","type":"ImageService3","width":1619,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"480.1,1541.4 406.8,1447.3 346.6,1321.6 295.5,1216.2 234.4,1082.8 144.3,905.7 189.6,726.3 207.9,357.1 215.9,249.6 941.3,137.4 945.3,17.6 984.9,17.9 986.2,57.4 1511.5,414.1 1510.9,446.4 1514.8,883.3 1514.4,1685.6 1199.7,1656.2 1040.4,1641.8 996.7,1637.8 789.6,1618.6 606.5,1590.7 540.4,1567.3 480.1,1541.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[184.0,375.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0907721407152,42.77931386337276]}},{"type":"Feature","properties":{"resourceCoords":[1500.0,1636.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08688328863288,42.77770594994944]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0017","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"437.4,904.9 517.1,783.3 756.2,389.8 837.9,265.3 931.8,160.4 1052.3,64.0 1140.5,11.0 1293.2,11.0 1287.9,73.0 1286.5,141.7 1317.0,320.9 1363.1,519.6 1408.6,714.2 1478.4,1016.3 1552.4,1341.3 1582.0,1483.8 1614.1,1677.5 1314.0,1723.0 876.4,1772.4 793.1,1783.6 290.8,1835.6 187.4,1835.9 20.6,1761.3 20.5,1711.3 179.7,1360.7 210.3,1297.3 187.0,1258.8 315.6,1103.8 390.6,976.0 437.4,904.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1543.0,1331.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0860240241886,42.77770432436006]}},{"type":"Feature","properties":{"resourceCoords":[-173.0,1865.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08498971909773,42.774499412261655]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p18","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"19"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0018","type":"ImageService3","width":1619,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"203.6,1788.3 285.9,1603.2 285.4,1500.2 232.5,1000.0 221.1,917.1 171.0,481.4 124.9,182.6 361.0,147.5 540.4,142.3 871.5,150.8 1102.0,152.2 1452.8,167.4 1421.2,330.6 1415.9,532.0 1414.8,975.5 1408.8,1463.0 1374.9,1460.6 1222.1,1445.2 1102.3,1413.7 629.5,1263.0 598.5,1494.8 527.5,1805.5 510.7,1861.2 478.6,1910.3 203.6,1788.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[632.0,1000.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0840268,42.7762237]}},{"type":"Feature","properties":{"resourceCoords":[632.0,145.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.083874,42.777793]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0019","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1493.8,1668.9 973.4,1810.8 635.6,1742.9 682.9,1331.6 586.2,1344.0 548.9,1181.4 488.6,1084.0 441.7,1027.2 284.1,866.5 63.4,663.8 110.3,628.6 145.1,582.0 317.8,314.0 426.0,106.7 819.1,409.6 921.0,480.1 1059.5,546.6 1090.5,560.5 1150.4,599.5 1301.8,619.9 1480.8,611.9 1475.6,742.7 1474.3,1312.0 1515.3,1310.8 1559.2,1679.7 1493.8,1668.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1479.0,1322.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0807090858252,42.77411940171432]}},{"type":"Feature","properties":{"resourceCoords":[419.0,118.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08408911635989,42.775717787122424]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p2","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0002","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1002.2,174.8 1125.1,194.7 1277.9,189.3 1415.6,177.5 1436.8,175.9 1452.0,370.1 1477.8,506.0 1500.6,667.5 1520.2,914.6 1527.8,1054.0 1523.4,1207.0 1537.6,1461.7 1563.9,1462.0 1583.3,1741.0 1506.7,1816.9 805.2,1799.8 357.6,1685.4 157.4,1712.9 71.1,1509.7 82.3,830.7 162.8,665.3 90.8,480.0 149.2,456.8 114.6,321.6 157.7,227.7 831.9,192.6 871.8,130.6 1002.2,174.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1029.0,1326.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.097093,42.764854]}},{"type":"Feature","properties":{"resourceCoords":[677.0,650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.098758,42.765552]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p20","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.71"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0020","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"907.5,1811.4 902.0,1852.0 341.6,1757.9 213.7,1731.5 215.9,1705.2 210.4,1318.3 212.3,1192.8 207.9,912.1 213.5,699.5 232.1,569.3 151.6,563.9 166.2,463.3 15.2,143.4 15.0,28.9 264.6,98.2 271.8,80.5 300.1,10.6 365.8,10.4 431.3,69.2 574.5,98.3 709.3,115.2 1050.5,142.4 1138.0,133.0 1202.3,145.4 1433.3,206.8 1418.2,227.5 1491.8,723.5 1424.6,934.5 1422.2,1402.7 1277.9,1828.4 907.5,1811.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1138.0,133.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07657,42.775093]}},{"type":"Feature","properties":{"resourceCoords":[902.0,1852.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0807273,42.7741348]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p21","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0021","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"452.7,1538.6 436.0,1474.0 389.1,1397.6 264.9,1071.8 221.5,940.5 185.6,796.0 211.0,710.0 182.1,649.7 105.5,654.2 86.0,655.3 37.8,379.8 19.6,388.4 19.5,342.6 129.2,208.7 126.5,190.7 233.5,148.9 485.9,71.4 654.2,50.4 929.6,37.4 1246.7,29.7 1396.8,29.8 1471.3,30.1 1391.0,352.4 1325.9,582.6 1321.8,630.3 1292.1,749.9 1627.0,807.6 1627.0,842.7 1627.0,874.7 1261.7,815.8 1103.5,1461.8 1094.1,1460.3 1027.1,1764.7 784.9,1831.8 497.3,1777.9 452.7,1538.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[436.0,1474.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07657,42.775093]}},{"type":"Feature","properties":{"resourceCoords":[1421.0,248.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.074132,42.777306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p22","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0022","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"234.7,1524.4 244.2,1524.0 278.6,868.5 643.6,858.5 631.3,793.4 296.0,799.0 302.8,677.6 298.0,630.6 318.8,395.4 337.2,68.2 340.5,67.6 568.8,56.0 807.6,65.7 1143.5,105.2 1406.9,130.6 1395.7,441.7 1377.5,675.5 1372.9,819.5 1404.1,825.4 1627.0,901.5 1627.0,933.6 1627.0,974.4 1579.0,951.5 1370.3,890.0 1340.0,1486.2 1346.0,1486.1 1295.8,1695.7 1289.0,1693.2 794.5,1848.6 225.8,1831.9 234.7,1524.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1149.0,112.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07203597518438,42.77733894881452]}},{"type":"Feature","properties":{"resourceCoords":[841.0,69.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07277107813076,42.77752342701569]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p23","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0023","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"306.4,1501.8 300.4,1502.4 285.8,900.9 500.1,947.0 550.1,966.2 544.6,893.0 314.8,833.4 283.1,829.9 276.7,684.8 277.2,448.5 265.0,135.0 313.7,134.9 875.5,45.5 866.0,135.0 1126.0,156.7 1353.3,183.2 1380.8,186.4 1384.2,315.3 1402.0,635.7 1399.9,709.5 1399.2,734.5 1414.8,994.0 1427.5,1019.8 1450.5,1280.4 1519.4,1315.3 1592.1,1396.3 1444.7,1420.4 1422.1,1857.0 1402.1,1827.0 706.4,1839.8 271.9,1716.2 306.4,1501.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[866.0,135.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0699748,42.7769284]}},{"type":"Feature","properties":{"resourceCoords":[265.0,135.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0714122,42.7772158]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0024","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"95.3,1289.6 242.2,1272.6 174.2,1189.7 107.9,1152.3 97.8,895.2 86.5,869.3 83.8,613.6 91.3,516.7 89.3,201.1 92.2,74.2 256.5,100.9 533.8,151.8 735.2,185.7 871.9,204.1 824.5,276.2 1059.5,85.8 1069.8,120.7 1194.8,108.0 1310.1,186.9 1474.9,150.3 1599.1,981.6 1501.8,1458.7 1522.5,1857.3 685.0,1878.8 81.0,1766.3 51.6,1717.5 95.3,1289.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0024/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06896218435708,42.77676298647413]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06498367281745,42.77611081650204]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06602416517237,42.772642360550144]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.070002676712,42.773294530522236]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p25","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0025","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"330.7,895.0 320.5,466.1 320.9,214.5 803.6,244.2 926.9,259.9 1145.8,265.4 1344.8,245.3 1355.0,351.7 1352.2,517.9 1333.3,803.3 1297.4,1209.2 1250.7,1790.2 1013.9,1751.9 819.2,1724.3 674.4,1709.7 341.8,1682.5 330.7,895.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1320.0,765.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08498267647826,42.77967840219545]}},{"type":"Feature","properties":{"resourceCoords":[1320.0,247.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08528519450275,42.78060039312513]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p26","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"23"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0026","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1314.5,1836.8 969.6,1768.0 741.8,1731.2 415.4,1672.1 237.1,1649.8 194.3,1070.7 167.6,665.5 142.4,381.6 119.9,217.6 579.2,217.8 979.0,230.0 1319.6,230.8 1375.9,996.6 1576.2,961.5 1543.2,1062.8 1490.3,1267.0 1403.2,1570.0 1347.7,1778.3 1314.5,1836.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[979.0,1042.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082826,42.779049]}},{"type":"Feature","properties":{"resourceCoords":[979.0,230.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082993,42.780536]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p27","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0027","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1449.3,406.7 1425.1,580.9 1382.0,926.0 1290.2,1419.7 1276.4,1508.2 1295.0,1831.9 1316.8,1903.5 1253.0,1904.0 1252.0,1919.0 1248.0,1904.0 1223.0,1904.0 1222.0,1910.0 1213.0,1911.0 1213.0,1919.0 1203.0,1919.0 1202.0,1904.0 1186.0,1904.0 1185.0,1919.0 1127.9,1919.0 853.6,1704.8 821.5,1608.5 747.1,1639.9 705.2,1515.3 614.5,1323.0 484.4,1074.4 429.6,961.6 250.8,618.7 240.9,594.2 180.0,426.2 154.4,276.0 173.8,207.4 659.5,235.4 1101.5,256.5 1301.9,270.9 1463.1,309.8 1449.3,406.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[635.0,234.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08207,42.776121]}},{"type":"Feature","properties":{"resourceCoords":[1382.0,926.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.080283,42.777465]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p28","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0028","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"268.9,11.8 334.6,14.0 545.6,58.8 852.9,130.1 1059.7,172.3 1162.7,200.2 1203.4,319.9 1401.8,819.0 1428.8,876.6 1483.0,1047.4 1545.0,1320.4 1625.8,1710.5 1627.0,1772.1 1596.5,1777.0 1556.1,1776.9 1185.6,1779.2 693.8,1775.0 431.3,1770.2 96.0,1778.8 78.3,1780.8 19.9,1729.7 19.7,1589.1 41.5,1590.3 19.6,1500.5 19.4,1272.5 19.3,1174.9 38.1,1086.9 158.2,597.1 221.0,253.6 255.1,80.3 268.9,11.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0028/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1402.0,824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07981043279635,42.77976078877889]}},{"type":"Feature","properties":{"resourceCoords":[604.0,680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08010972201268,42.77828793237928]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p29","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0029","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"104.0,1554.7 109.6,1292.3 115.3,800.7 114.2,430.3 883.0,213.8 1442.1,53.4 1550.8,16.9 1610.0,18.0 1614.1,65.5 1548.8,387.0 1477.0,788.8 1439.6,972.1 1340.3,1344.7 1220.0,1772.0 907.6,1768.0 636.0,1770.8 469.6,1785.4 218.3,1852.7 111.5,1889.9 104.0,1554.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1127.0,710.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.074882,42.779646]}},{"type":"Feature","properties":{"resourceCoords":[106.0,1649.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.077357,42.777859]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p3","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0003","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"43.2,1539.0 17.0,1536.6 17.5,1335.2 23.5,1280.8 40.3,1128.1 44.0,988.0 44.4,739.4 34.7,576.0 19.9,438.1 20.4,242.5 339.2,244.0 579.8,224.8 784.2,212.9 960.4,198.5 1048.8,182.7 1329.5,155.1 1330.3,132.8 1588.7,148.2 1495.5,943.3 1491.0,943.5 1556.5,1365.4 1599.2,1388.2 1564.4,1512.9 1493.9,1532.8 1474.4,1739.3 1611.3,1844.0 1548.6,1908.0 1538.2,1908.0 1535.8,1908.0 1411.0,1817.8 1372.3,1836.5 967.5,1859.2 60.6,1802.3 40.0,1819.6 43.2,1539.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[364.0,557.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.096633,42.766972]}},{"type":"Feature","properties":{"resourceCoords":[44.0,988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.096614,42.765984]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p30","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0030","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"974.1,1860.7 734.7,1842.5 505.0,1846.0 428.6,1857.4 281.5,1879.9 319.6,1434.7 347.2,1047.5 349.5,859.1 344.4,448.3 349.0,41.0 1099.4,36.0 1165.6,185.3 1281.7,406.8 1367.1,561.4 1441.5,709.0 1476.0,812.3 1505.6,938.5 1493.5,1115.8 1374.2,1653.7 1312.2,1903.7 1256.8,1904.0 974.1,1860.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[505.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0739981,42.7777]}},{"type":"Feature","properties":{"resourceCoords":[349.0,41.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.073686,42.780998]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0031__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p31 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"6468.0"},{"label":"split_canvas_h","value":"7680.0"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0031__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0031","type":"ImageService3","width":1617,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"269.8,153.3 374.0,377.3 451.0,534.0 517.5,683.1 546.8,786.8 570.0,912.8 549.8,1087.2 406.8,1612.6 331.4,1864.7 589.9,1911.5 637.3,1919.0 1056.0,1919.0 1057.0,1902.0 1090.0,1902.0 1091.0,1919.0 1197.9,1919.0 1201.9,1904.3 1202.0,1902.0 1202.5,1902.0 1312.2,1496.3 1414.7,1055.5 1484.0,771.8 1484.9,525.6 1533.1,359.7 1503.6,375.8 1490.8,53.8 885.7,31.2 887.1,15.1 871.0,15.0 870.6,9.4 848.9,9.2 846.0,15.0 784.0,15.0 782.0,11.0 727.0,9.0 726.9,8.0 724.8,8.0 724.0,13.0 527.0,15.0 526.9,14.5 513.0,14.7 512.0,15.0 467.0,15.0 464.4,5.3 462.0,15.0 216.7,16.1 269.8,153.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0031__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1050.0,30.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.06975126172581,42.780577986975175]}},{"type":"Feature","properties":{"resourceCoords":[1465.0,777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0689159297149,42.77912416341777]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_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":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p32 [1]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"},{"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":"6512.0"},{"label":"split_canvas_h","value":"7680.0"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0032__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0032","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"643.0,1785.0 809.6,1784.2 1091.8,1788.5 1296.4,1788.6 1434.3,1784.1 1399.9,1863.6 1599.2,1635.5 1567.0,1569.2 1543.3,421.6 1382.5,420.3 999.0,417.2 999.0,417.1 993.7,415.1 915.9,185.2 703.5,33.8 94.0,36.3 21.8,107.3 21.1,281.1 88.4,519.1 100.0,812.5 122.9,1266.8 130.7,1796.0 388.9,1786.2 643.0,1785.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0032__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[643.0,1785.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.068777,42.776592]}},{"type":"Feature","properties":{"resourceCoords":[498.0,421.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.067825,42.779013]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0033","type":"ImageService3","width":1617,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"987.8,336.9 1420.7,414.7 1358.1,796.3 1354.5,875.0 1393.5,1432.4 1218.6,1462.5 1158.5,1481.4 642.0,1608.8 519.0,1632.6 318.2,1650.6 326.7,889.6 332.1,435.9 607.6,423.2 725.5,407.0 826.3,383.0 929.5,349.4 987.8,336.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0033/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[472.0,1756.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08141766644798,42.779046626964124]}},{"type":"Feature","properties":{"resourceCoords":[846.0,1554.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08057077799023,42.779531075860085]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p34 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"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":"6512.0"},{"label":"split_canvas_h","value":"4749.6"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1138.2,963.5 1144.2,962.1 1200.1,960.1 1199.9,959.1 1198.0,949.3 1205.8,835.8 1248.7,658.9 1317.3,357.8 1339.6,201.3 1341.6,100.2 1341.2,87.7 1341.1,82.4 1341.0,65.8 1228.3,124.7 1208.6,121.4 743.0,116.0 325.9,108.2 330.0,501.2 340.1,580.6 476.7,1131.7 748.9,1059.3 1138.2,963.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[743.0,116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07858,42.781772]}},{"type":"Feature","properties":{"resourceCoords":[1198.0,949.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0774615,42.7802465]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p35","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0035","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1374.0,146.4 1485.9,24.9 1584.9,28.5 1582.9,94.8 1578.3,370.4 1554.0,979.7 1548.5,1377.0 1366.0,1452.5 819.0,1650.5 102.5,1906.0 65.8,1906.0 64.0,1878.6 54.8,1837.8 59.4,1724.8 97.1,1548.0 156.8,1247.1 174.6,1091.1 173.7,990.6 251.4,1079.0 787.4,717.0 803.2,735.4 984.2,558.6 1304.1,222.9 1374.0,146.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0035/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[831.0,1645.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0755035791672,42.78055139231147]}},{"type":"Feature","properties":{"resourceCoords":[1180.0,1522.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07462011910188,42.780755159305656]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p36","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0036","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"858.0,1869.2 109.5,1812.0 99.8,1412.0 100.8,798.0 96.7,606.3 395.0,421.4 421.0,501.7 1038.7,230.4 1039.2,181.9 1226.8,17.3 1242.5,17.4 1227.5,83.7 1504.1,115.5 1561.1,185.5 1603.7,1383.7 1542.0,1897.8 1492.0,1898.2 1377.0,1893.0 1376.1,1898.0 1116.0,1890.8 1113.8,1881.0 858.0,1869.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[107.0,329.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07342498108278,42.78369626836324]}},{"type":"Feature","properties":{"resourceCoords":[868.0,406.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0715525557706,42.78345558293968]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p37","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0037","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"158.3,1230.8 191.9,1195.5 275.2,1099.0 320.4,1036.2 372.9,932.1 439.9,761.6 493.3,548.5 536.4,290.8 941.8,290.8 1541.0,282.3 1573.7,779.2 1571.7,779.2 1542.5,1512.8 1485.8,1514.8 1022.1,1521.0 769.1,1515.2 771.2,1491.0 137.5,1361.2 146.3,1243.8 158.3,1230.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0037/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1188.0,777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0760114480864,42.783734908168654]}},{"type":"Feature","properties":{"resourceCoords":[439.0,777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07736761099251,42.78278544150219]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p38","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0038","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"39.8,1280.4 82.8,550.6 84.8,550.6 61.9,55.2 204.5,55.9 383.0,55.0 736.6,48.2 1088.7,56.0 1292.9,55.2 1438.1,60.3 1532.5,92.8 1627.0,140.9 1627.0,157.4 1627.0,211.1 1574.6,263.9 1611.6,1681.0 1545.2,1862.3 1455.0,1901.4 1296.4,1901.9 1132.7,1880.0 1096.2,1911.1 492.5,1627.0 535.4,1555.3 203.7,1453.2 266.5,1396.0 315.9,1352.1 250.9,1277.9 86.4,1279.7 39.8,1280.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0038/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[791.0,1272.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.072773,42.784193]}},{"type":"Feature","properties":{"resourceCoords":[383.0,55.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.075654,42.785257]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p39","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0039/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0039","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1306.0,1765.0 1090.0,1739.1 969.5,1712.1 494.8,1637.5 473.8,1855.0 20.9,1491.6 19.0,916.0 15.7,915.5 15.8,912.2 19.0,910.0 19.0,872.0 17.7,871.4 18.0,864.4 19.0,864.0 19.0,845.0 50.0,159.8 598.7,240.1 599.4,231.2 1591.6,273.0 1591.1,316.9 1590.9,397.1 1567.6,594.0 1532.5,774.8 1482.8,1033.8 1473.8,1156.9 1488.5,1374.3 1504.8,1763.8 1306.0,1765.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0039/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[880.0,1698.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.086763,42.780355]}},{"type":"Feature","properties":{"resourceCoords":[1306.0,1765.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.085697,42.780493]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p4","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0004","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"239.0,1905.2 97.2,1498.9 101.5,1497.8 26.0,338.8 47.2,334.1 275.7,235.3 533.0,135.9 688.2,73.7 760.0,50.5 897.4,29.6 1011.7,31.9 1099.8,44.7 1116.2,18.6 1389.4,19.4 1387.2,37.7 1382.3,48.2 1395.0,102.6 1596.1,147.5 1532.0,460.4 1477.8,1169.7 1504.2,1163.6 1481.7,1715.3 1462.0,1751.5 1098.1,1814.9 949.8,1764.2 288.1,1891.5 286.8,1905.8 239.0,1905.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[737.0,536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.093468,42.769764]}},{"type":"Feature","properties":{"resourceCoords":[1505.0,586.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.091709,42.770319]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p40","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0040","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"320.0,1344.0 292.9,947.5 271.9,726.4 277.8,600.6 321.4,335.4 841.6,270.1 1406.0,184.4 1419.5,538.9 1430.7,620.1 1397.8,624.3 1373.6,762.8 1315.0,1017.6 1260.2,1277.6 1172.4,1656.6 778.6,1555.1 323.1,1452.2 320.0,1344.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0040/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[571.0,670.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.085133,42.781912]}},{"type":"Feature","properties":{"resourceCoords":[320.0,1344.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.085226,42.780614]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p41","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0041","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"318.4,1146.5 408.4,901.4 501.3,661.9 544.5,530.7 577.0,531.2 577.6,450.7 614.5,104.1 1277.3,101.2 1259.2,553.4 1252.7,726.6 1231.8,1270.6 1122.5,1274.2 1018.1,1269.3 899.4,1252.0 629.1,1187.2 497.0,1625.0 179.6,1502.6 318.4,1146.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[888.0,539.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082439,42.782698]}},{"type":"Feature","properties":{"resourceCoords":[497.0,1625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082143,42.780586]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p42","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0042","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"141.1,533.5 170.8,78.0 1469.0,94.0 1498.8,396.9 1560.3,899.5 1592.5,1160.5 1602.1,1381.6 1586.3,1565.4 1565.4,1681.0 1539.9,1754.5 1487.1,1871.5 1472.3,1900.4 1391.6,1900.6 1345.0,1900.7 1329.2,1888.7 918.2,1669.1 551.5,1469.7 155.8,1261.6 95.4,1255.9 130.2,708.0 141.1,533.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[722.0,1103.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.079655,42.782528]}},{"type":"Feature","properties":{"resourceCoords":[1469.0,94.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.079145,42.784787]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p43","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0043","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"136.3,1219.0 198.5,923.0 298.1,526.1 388.5,215.8 1024.6,196.7 1191.2,188.9 1192.2,269.4 1534.2,258.3 1537.4,1051.1 1517.5,1051.2 1515.7,1717.9 1372.0,1721.0 1192.7,1722.3 449.8,1720.4 44.2,1713.7 136.3,1219.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0043/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1372.0,1721.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.075654,42.785257]}},{"type":"Feature","properties":{"resourceCoords":[170.0,1051.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.078971,42.784583]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p44","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0044","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"51.5,1724.0 51.8,1043.3 72.2,1043.2 67.0,233.7 393.6,221.4 393.6,195.1 1244.2,132.5 1228.1,264.1 1462.6,300.1 1615.8,294.2 1586.4,315.3 1564.6,324.4 1573.2,1868.2 1186.0,1877.1 1181.6,1881.5 1181.2,1809.5 1084.1,1760.7 987.1,1727.8 838.1,1723.3 628.7,1725.1 267.5,1718.9 51.5,1724.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1103.0,1049.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07472440870289,42.78763661897637]}},{"type":"Feature","properties":{"resourceCoords":[988.0,1697.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07381320888209,42.78666056458765]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p45","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0045","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"858.5,1738.5 209.1,1658.4 232.7,1416.8 249.2,1276.6 289.4,696.3 313.4,86.7 1393.5,119.2 1400.0,782.6 1406.6,1344.0 1399.5,1859.5 1223.3,1804.2 1029.8,1759.0 949.9,1749.7 858.5,1738.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0045/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[656.0,97.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08277585970157,42.78497604388439]}},{"type":"Feature","properties":{"resourceCoords":[656.0,1713.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08643207823462,42.78370387540645]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p46","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0046/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0046","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"236.2,367.9 253.1,136.6 304.1,137.9 1408.7,141.2 1421.2,1052.1 1428.9,1378.0 1454.1,1790.1 152.8,1775.9 217.2,686.5 236.2,367.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0046/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[891.0,1774.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08040676740615,42.784347484970795]}},{"type":"Feature","properties":{"resourceCoords":[1427.0,566.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08058389505716,42.78674854770722]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p47","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0047/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0047","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1601.5,1807.2 1276.3,1808.3 928.7,1808.3 930.4,1726.6 761.0,1729.1 114.5,1727.7 407.7,858.5 555.4,418.3 628.6,232.3 703.8,77.9 877.4,90.6 1146.6,112.7 1468.8,120.4 1502.0,505.2 1498.4,505.1 1502.1,896.8 1497.6,896.8 1483.6,1265.2 1489.4,1265.2 1468.5,1719.8 1604.8,1718.3 1602.4,1781.2 1601.5,1807.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0047/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[398.0,889.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08106504205595,42.78737121422109]}},{"type":"Feature","properties":{"resourceCoords":[640.0,120.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08202714496325,42.78864538873434]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p48","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0048/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0048","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"136.0,127.5 718.5,152.8 1006.7,197.9 971.8,139.8 1062.0,29.9 1095.5,71.0 1456.8,163.7 1583.5,873.7 1562.7,1855.3 1442.4,1900.4 1270.3,1900.8 1269.5,1900.8 1041.3,1857.5 1061.6,1729.3 227.2,1761.0 229.5,1699.2 95.4,1700.5 116.3,1253.1 110.7,1253.1 124.8,890.5 129.2,890.6 125.9,505.1 129.4,505.2 97.2,126.5 136.0,127.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0048/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1157.0,896.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.077399,42.79017]}},{"type":"Feature","properties":{"resourceCoords":[1061.0,1733.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.076045,42.7889845]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p49","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0049/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0049","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1543.0,1834.3 553.7,1820.4 553.3,1829.2 22.6,1766.8 22.5,1741.7 22.4,1700.2 35.7,1706.5 35.3,483.6 85.2,201.1 103.6,200.2 114.4,156.7 827.1,27.6 1394.5,75.3 1413.2,76.9 1421.8,155.0 1550.3,152.4 1542.7,249.5 1525.5,621.4 1524.3,826.7 1529.7,1083.2 1535.7,1136.1 1530.8,1136.3 1542.2,1786.5 1543.0,1834.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[565.0,1168.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.089087,42.783901]}},{"type":"Feature","properties":{"resourceCoords":[1537.0,361.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.087355,42.785861]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0005","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"158.5,1212.0 167.2,1042.0 192.9,1040.7 263.1,554.3 421.9,303.6 514.0,338.1 790.0,282.1 1128.9,91.0 1145.7,65.7 1147.6,77.2 1320.1,172.7 1375.2,12.3 1400.2,12.3 1422.1,824.9 1428.8,824.9 1451.8,1153.5 1467.5,1325.2 1201.0,1394.5 963.2,1466.5 941.6,1468.8 924.2,1822.3 663.9,1824.3 664.5,1846.9 384.6,1893.6 333.9,1906.3 295.8,1906.0 278.6,1776.1 272.1,1667.5 275.4,1588.5 157.8,1587.9 155.2,1392.0 158.5,1212.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[900.0,852.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.09620219989722,42.77039420595551]}},{"type":"Feature","properties":{"resourceCoords":[299.0,1892.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.09601915051717,42.768200903461384]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p50","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0050","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"20.0,1801.7 20.0,1780.7 20.0,1748.0 44.0,1490.7 68.7,1285.5 128.4,915.1 147.1,818.9 18.2,806.8 18.5,727.6 35.4,731.0 105.8,63.0 1407.0,27.6 1410.5,17.7 1536.0,19.4 1597.2,1257.8 1596.0,1318.1 1592.0,1548.0 1590.7,1864.3 980.0,1856.4 398.2,1831.4 257.4,1818.6 20.0,1801.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[96.0,1026.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08738701169942,42.785850813431374]}},{"type":"Feature","properties":{"resourceCoords":[977.0,1848.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08454030295647,42.78512484196846]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p51","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0051/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0051","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1502.5,419.5 1430.0,586.1 1357.5,792.6 1337.1,879.2 1322.4,971.9 1302.0,1138.4 1293.3,1333.4 1296.5,1786.7 210.6,1774.3 160.4,1772.5 165.4,1712.9 187.7,171.7 284.1,142.7 284.8,132.3 1439.1,135.3 1442.3,136.4 1590.2,196.2 1502.5,419.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0051/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[922.0,1782.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.081946,42.7871095]}},{"type":"Feature","properties":{"resourceCoords":[257.0,522.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.084901,42.788609]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p52","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0052/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0052","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"28.6,1713.5 106.2,1509.1 182.8,1344.5 276.1,1123.7 289.9,1092.1 409.8,809.1 515.3,447.3 553.0,174.4 571.6,87.0 1529.4,93.7 1554.9,119.7 1615.8,118.5 1615.8,134.4 1540.8,151.9 1561.1,1303.6 1596.5,1326.9 1544.1,1457.8 1594.5,1502.2 1308.6,1545.8 750.4,1696.2 411.3,1794.2 154.4,1852.6 20.8,1884.3 19.6,1747.7 28.6,1713.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0052/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[287.0,1104.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08229874953221,42.79032508570297]}},{"type":"Feature","properties":{"resourceCoords":[-21.0,1890.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08201857052619,42.7887751984401]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p53","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0053/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0053","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"46.9,411.3 55.0,411.1 289.7,89.6 293.1,36.1 561.5,56.9 666.6,79.0 942.8,117.0 1309.2,223.5 1595.7,344.6 1622.0,371.6 1563.6,506.6 1562.3,509.8 1530.9,1676.9 1541.4,1677.8 1568.3,1776.0 1608.6,1777.5 1608.5,1808.4 1608.2,1858.5 1461.8,1897.4 1416.0,1897.1 1416.0,1896.0 1352.0,1896.0 1352.0,1896.7 195.1,1888.3 84.7,1844.2 35.6,412.5 46.9,411.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0053/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1002.0,132.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0825584266312,42.791485940220284]}},{"type":"Feature","properties":{"resourceCoords":[1502.0,1678.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08533011228407,42.789317628188336]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p54","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0054/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0054","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"19.0,1321.1 19.0,1313.0 18.0,1301.7 36.7,1301.4 30.7,294.9 91.0,57.6 1559.5,45.8 1611.5,1223.3 1568.9,1827.8 1542.2,1888.9 1489.5,1900.3 1353.1,1900.5 1327.8,1873.8 359.7,1850.0 363.5,1833.5 389.2,1565.8 335.8,1561.4 19.0,1321.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0054/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[812.0,913.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0831031,42.794129]}},{"type":"Feature","properties":{"resourceCoords":[540.0,1530.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082922,42.792901]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0055/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p55","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0055/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0055","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"75.2,1750.4 37.6,476.8 96.3,63.6 1573.2,57.1 1611.8,966.4 1558.5,1892.8 653.6,1878.2 75.2,1750.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0055/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[569.0,215.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.055252,42.76878]}},{"type":"Feature","properties":{"resourceCoords":[569.0,1628.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.056953,42.766527]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p56","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0056/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0056","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"625.0,27.4 1549.3,59.5 1594.3,230.8 1522.5,1440.2 1563.5,1887.3 88.1,1877.8 22.6,1482.8 94.5,128.4 436.4,122.7 625.0,27.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0056/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1416.0,208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.05189088729682,42.764696579652664]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,1676.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.04835888209905,42.764008403934014]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p58","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0058","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"109.2,155.2 401.9,40.5 1322.0,41.8 1316.2,16.3 1328.3,16.3 1342.7,16.4 1531.2,624.0 1499.5,623.7 1505.6,953.9 1509.0,1378.8 1505.6,1560.0 1508.8,1877.8 1295.8,1778.9 825.7,1844.6 626.3,1796.0 295.4,1823.0 125.1,1751.8 39.3,1422.0 81.1,251.2 36.2,253.1 46.7,156.1 109.2,155.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0058/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1509.0,635.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08855480823884,42.765567542002664]}},{"type":"Feature","properties":{"resourceCoords":[1509.0,1525.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08858729801669,42.763936075440164]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0059/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p59","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0059/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0059","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"652.7,94.2 830.9,116.0 1250.0,156.1 1576.0,183.8 1545.5,450.8 1533.5,614.1 1524.1,613.1 1529.5,1074.4 1523.7,1073.8 1552.4,1521.1 1610.6,1527.7 1610.6,1536.7 1534.6,1592.9 1420.2,1677.5 1341.7,1725.2 1227.9,1778.7 843.3,1890.4 57.9,1820.6 62.9,115.5 90.5,52.1 339.1,64.9 652.7,94.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0059/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[666.0,78.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08864074554074,42.763893907823395]}},{"type":"Feature","properties":{"resourceCoords":[712.0,1942.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08397109495311,42.76428381140151]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0006","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"698.8,1911.0 617.6,1874.4 508.5,1840.7 370.8,1822.9 295.6,1825.3 129.3,1842.3 142.1,1670.2 173.6,1342.0 166.9,1340.9 279.2,535.2 254.5,531.1 173.7,680.4 19.1,557.7 19.1,555.3 19.2,546.0 53.8,508.8 84.6,43.0 468.8,128.9 1296.7,63.5 1307.7,19.1 1329.8,19.2 1337.0,19.2 1332.8,57.9 1336.1,331.7 1369.5,700.3 1377.7,822.3 1394.2,964.1 1418.8,1104.5 1466.7,1316.8 1499.5,1425.9 1548.2,1565.8 1562.6,1603.7 1180.5,1820.3 1036.5,1910.5 1023.0,1919.0 954.1,1919.0 888.4,1919.0 738.0,1875.8 698.8,1911.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1334.0,1735.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.09236032967442,42.7718914843823]}},{"type":"Feature","properties":{"resourceCoords":[173.0,1346.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.09513529914568,42.770963969415945]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p60","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0060","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1446.3,114.5 1524.9,129.6 1614.9,111.6 1614.8,221.8 1519.3,308.7 1566.3,1086.7 1438.9,1895.1 1426.2,1895.3 1379.3,1798.2 1358.8,1864.5 913.4,1809.7 915.0,1804.0 460.1,1723.7 462.9,1714.6 304.3,1672.5 77.3,1602.2 70.3,971.0 45.1,963.4 98.8,147.8 477.6,42.3 1103.8,135.6 1253.8,33.8 1439.8,39.5 1446.3,114.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0060/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1379.0,1763.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08523574594517,42.76595450137383]}},{"type":"Feature","properties":{"resourceCoords":[42.0,1599.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08858661695953,42.765574974034735]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p61","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0061","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"299.1,1502.5 267.8,1381.8 235.8,1296.5 174.3,1169.5 186.9,1169.3 312.6,368.6 305.9,259.4 304.7,238.8 364.1,233.8 362.5,119.4 376.4,64.3 403.4,41.3 443.6,34.8 725.8,34.1 1082.1,37.6 1447.0,44.0 1446.8,1245.6 1446.8,1477.2 1347.8,1507.8 1146.2,1590.8 1017.5,1650.5 1025.7,1711.3 897.0,1918.1 901.2,1870.1 345.0,1871.2 337.4,1897.8 299.1,1502.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0061/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1082.0,1620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0825,42.765393]}},{"type":"Feature","properties":{"resourceCoords":[1447.0,44.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082693,42.768408]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0062/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p62","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0062/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0062","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"244.8,1910.0 277.0,1910.0 277.5,1914.3 486.4,1878.7 578.7,1869.4 802.3,1869.2 1080.5,1899.9 1134.1,1899.8 1156.3,1702.0 1176.5,1475.8 1202.7,1006.9 1213.6,857.5 1236.4,786.3 1266.1,748.2 1437.0,576.3 1261.6,418.3 805.9,13.0 791.0,13.0 789.6,10.2 782.2,9.0 763.0,9.0 762.6,5.7 734.9,1.0 728.9,1.0 728.0,11.0 719.4,11.1 717.4,16.3 707.4,154.5 712.9,518.0 356.8,482.7 261.9,1692.2 244.8,1910.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0062/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[712.0,-59.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08232484349578,42.7695741610823]}},{"type":"Feature","properties":{"resourceCoords":[712.0,1860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08065633711335,42.766246356258]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0063/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p63","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0063/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0063","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"44.5,976.1 148.2,130.0 291.9,122.8 307.9,81.2 366.3,72.2 398.5,131.5 1338.7,153.7 1574.3,203.7 1575.8,1151.0 1566.8,1231.8 1608.0,1273.0 1602.0,1321.8 1593.4,1343.7 1581.7,1482.2 1582.7,1846.9 1225.9,1807.0 858.5,1767.2 499.4,1731.1 214.7,1706.0 173.5,1708.9 144.2,1729.7 125.2,1784.0 116.3,1899.5 55.9,1899.2 75.1,1249.3 178.3,1171.0 188.3,1061.0 96.8,1070.9 19.7,1048.7 19.9,973.1 44.5,976.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0063/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[104.0,1752.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08537228109735,42.76776512691016]}},{"type":"Feature","properties":{"resourceCoords":[1579.0,1164.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0824411706834,42.76974675329631]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0064/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p64","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0064/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0064","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"184.9,170.3 375.4,83.3 910.3,132.4 1464.0,46.2 1598.5,107.5 1542.0,655.3 1592.3,655.9 1621.0,662.1 1621.0,709.1 1608.8,791.2 1496.0,1702.6 1494.8,1713.4 843.6,1792.2 838.2,1822.2 805.6,1866.1 628.3,1705.2 167.6,1292.2 89.7,1278.8 79.9,1290.0 86.5,1273.0 92.1,1223.7 50.1,1182.4 58.5,1100.5 49.0,142.7 184.9,170.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0064/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[835.0,1137.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08062295669447,42.77019857127788]}},{"type":"Feature","properties":{"resourceCoords":[1572.0,1137.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07890903458507,42.770667198261535]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0065/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p65","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0065/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0065","type":"ImageService3","width":1627,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1423.2,536.0 1507.0,767.2 1532.6,856.5 1572.6,1076.5 1595.5,1408.9 1612.2,1407.8 1598.8,1469.9 1610.8,1724.5 1610.1,1870.6 1094.0,1864.7 866.6,1867.1 642.3,1858.5 240.2,1850.8 88.1,1850.3 12.7,1849.0 99.5,1848.2 129.8,1675.6 85.0,1593.5 130.1,1505.1 56.5,1418.0 52.0,134.4 98.4,38.8 919.0,28.9 1139.8,137.2 1200.1,122.8 1273.2,246.1 1377.0,440.2 1417.8,536.5 1423.2,536.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0065/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1557.0,978.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.080672353609,42.76622823547848]}},{"type":"Feature","properties":{"resourceCoords":[543.0,585.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08120527289621,42.76425756912227]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0066/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p66","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0066/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0066","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"38.0,176.0 37.7,699.5 42.5,924.8 36.4,1147.2 33.1,1545.7 34.2,1696.5 33.6,1774.7 32.9,1861.5 93.1,1893.2 798.7,1884.5 1021.0,1781.8 1466.9,1805.8 1486.1,1781.3 1484.2,1417.9 1588.2,1097.7 1595.3,563.5 1617.2,576.5 1617.2,563.1 1581.9,492.9 1481.8,315.0 1432.2,238.3 1401.2,190.8 1302.9,52.1 1288.0,53.6 1140.5,10.2 879.0,9.0 878.1,1.0 839.9,1.0 839.0,9.0 823.0,9.0 822.1,1.0 814.9,1.0 814.0,9.0 792.0,9.0 791.1,1.0 722.9,1.0 722.0,9.0 694.0,9.0 693.1,1.0 688.9,1.0 688.0,9.0 646.0,9.0 645.1,1.0 638.7,1.0 635.7,2.5 635.0,9.0 622.8,9.0 588.1,26.3 367.9,103.0 184.7,152.0 38.0,176.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0066/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1605.0,536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0744133,42.7664437]}},{"type":"Feature","properties":{"resourceCoords":[38.0,176.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.078488,42.766632]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p67","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0067/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0067","type":"ImageService3","width":1627,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"945.1,1768.2 809.7,1818.8 578.4,1919.0 511.9,1919.0 438.8,1758.8 340.6,1556.7 124.0,1145.5 57.1,1013.3 40.3,941.3 46.0,893.9 103.5,661.0 108.5,607.8 97.8,580.1 601.4,185.2 596.9,175.6 836.9,74.5 925.0,45.7 1043.5,16.6 1054.0,16.0 1166.8,16.9 1229.5,22.1 1467.5,65.4 1588.4,87.4 1612.0,91.6 1612.0,125.4 1611.9,237.8 1609.8,247.9 1592.5,344.4 1570.0,568.9 1565.2,676.1 1573.2,823.4 1605.3,983.5 1604.9,1072.0 1575.7,1185.4 1565.1,1208.2 1611.4,1218.6 1611.3,1324.4 1445.5,1385.2 1405.3,1427.9 1225.2,1575.4 1070.2,1684.2 941.0,1757.0 945.1,1768.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0067/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[941.0,1757.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.078488,42.766632]}},{"type":"Feature","properties":{"resourceCoords":[1580.0,470.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.076279,42.76877]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p68","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0068/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0068","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1602.7,1497.5 1566.0,1576.4 1358.0,1908.8 1351.6,1919.0 1258.7,1919.0 1166.7,1867.8 950.4,1747.5 842.1,1700.2 772.1,1681.0 647.8,1670.0 553.0,1668.9 287.3,1687.8 201.7,775.4 195.9,692.9 185.8,647.0 156.6,647.2 107.3,657.4 44.9,111.5 204.9,145.8 473.3,41.8 1411.7,54.5 1558.7,115.8 1561.8,208.8 1556.8,424.5 1569.5,631.6 1596.3,1188.0 1610.5,1429.1 1602.7,1497.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0068/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1375.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07585856116174,42.769625897089526]}},{"type":"Feature","properties":{"resourceCoords":[236.0,887.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07899974870286,42.771088003279594]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p69","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0069","type":"ImageService3","width":1627,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"242.6,940.5 210.1,794.5 185.6,795.5 167.3,796.2 244.6,747.9 244.8,735.9 249.2,343.6 239.5,257.1 210.4,194.7 285.6,166.7 436.8,171.2 753.6,172.2 1087.7,181.8 1074.2,422.2 1059.6,822.8 1341.7,813.6 1093.9,1868.7 1091.5,1867.6 930.4,1802.7 918.5,1812.2 552.7,1919.0 443.0,1919.0 442.0,1906.0 429.5,1906.0 417.9,1894.8 421.8,1775.0 402.4,1686.7 334.7,1533.9 293.8,1388.6 274.6,1280.5 247.1,1051.3 242.7,951.1 242.6,940.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0069/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[239.0,720.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07587960786896,42.76955684564126]}},{"type":"Feature","properties":{"resourceCoords":[1078.0,175.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07342731416871,42.76986243771598]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p7","metadata":[{"label":"streets","value":"17"},{"label":"intersections","value":"25"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0007","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"667.2,550.7 969.9,355.9 1054.1,316.7 1147.4,296.6 1260.8,283.9 1447.3,250.8 1514.5,243.2 1506.5,842.4 1505.0,1072.0 1507.6,1452.8 1505.1,1695.7 1499.3,1764.7 1301.2,1679.6 1109.1,1592.3 203.6,1167.7 17.1,1079.1 16.8,1027.5 16.8,1023.0 23.9,1013.9 41.8,964.2 79.8,937.4 219.0,839.0 589.7,600.6 579.6,577.9 573.2,563.5 570.5,556.9 667.2,550.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1505.0,1072.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.089673,42.77276]}},{"type":"Feature","properties":{"resourceCoords":[219.0,839.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.092495,42.771586]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p70","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0070/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0070","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"565.8,1877.4 376.7,1788.2 289.8,1753.7 238.2,1733.4 436.8,664.9 154.6,687.4 150.3,285.4 152.6,44.0 540.6,43.2 696.0,40.6 865.2,49.6 1398.5,92.6 1586.0,106.8 1617.2,190.6 1617.2,195.6 1595.5,196.5 1571.0,1850.4 733.0,1919.0 644.3,1919.0 565.8,1877.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0070/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[962.0,50.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07161584011155,42.76918683337746]}},{"type":"Feature","properties":{"resourceCoords":[277.0,1764.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07500861432068,42.766932355022234]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p71","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0071/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0071","type":"ImageService3","width":1627,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"116.6,1205.6 109.8,650.9 104.6,444.2 117.4,229.7 117.5,137.0 132.4,143.8 405.8,35.4 1360.8,130.4 1455.8,184.7 1485.6,563.7 1614.9,586.6 1614.8,608.1 1593.5,761.6 1614.3,777.9 1614.0,896.5 1535.6,1005.1 1201.0,1446.0 857.8,1917.0 585.5,1725.6 322.9,1550.9 199.8,1464.2 122.0,1446.2 116.6,1205.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0071/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[543.0,1697.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.074282,42.77014]}},{"type":"Feature","properties":{"resourceCoords":[1201.0,1446.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.072774,42.770804]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0072/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p72","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0072/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0072","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1039.9,1815.3 870.5,1820.4 715.9,1835.8 329.2,1868.8 280.0,1284.0 244.0,727.8 232.1,593.4 154.2,502.9 127.6,504.2 31.0,355.4 150.4,284.1 159.6,183.8 668.4,52.8 1256.8,141.9 1370.1,57.0 1437.2,59.5 1235.9,833.2 1214.7,830.0 1178.5,1288.0 1451.2,1287.7 1564.2,1291.3 1575.0,1814.0 1039.9,1815.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0072/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[280.0,1284.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.072774,42.770804]}},{"type":"Feature","properties":{"resourceCoords":[1575.0,1814.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07069,42.768768]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p73","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.66"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0073/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0073","type":"ImageService3","width":1627,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"425.6,1289.3 311.3,1296.1 36.2,1321.6 30.4,856.5 52.1,857.8 183.4,59.0 446.1,44.8 1121.0,91.8 1553.2,213.4 1606.5,796.6 1552.5,1857.2 955.5,1827.8 722.7,1879.2 674.2,1796.5 484.8,1815.3 425.6,1289.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0073/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1077.0,1803.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.06950012173971,42.76815922774716]}},{"type":"Feature","properties":{"resourceCoords":[40.0,1280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07079870370156,42.770016478300434]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p8","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0008","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"252.1,1218.5 225.9,1224.5 282.3,519.2 347.1,208.2 1316.0,423.0 1472.7,455.8 1519.0,945.9 1539.3,939.8 1547.5,1060.0 1246.0,1551.5 1081.8,1533.2 962.8,1604.2 338.8,1564.6 227.8,1767.2 252.1,1218.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[255.0,644.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.091709,42.770319]}},{"type":"Feature","properties":{"resourceCoords":[1316.0,423.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.089601,42.77157]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T14:52:10Z","modified":"2026-10-24T14:52:10Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0009","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1375.3,1800.4 1081.1,1835.1 494.3,1725.3 144.6,1791.4 141.9,1796.2 128.9,1675.4 108.7,1682.3 42.9,1189.9 92.0,1198.2 305.5,1229.8 293.4,1161.5 233.5,925.9 133.4,557.9 789.9,392.6 963.2,342.4 1036.9,313.1 1104.1,269.2 1188.1,166.5 1622.0,214.2 1622.0,216.3 1487.1,1243.8 1472.7,1243.5 1426.8,1242.6 1433.4,1717.6 1443.0,1701.0 1517.6,1711.8 1375.3,1800.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[115.0,470.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08980641235411,42.77289087763619]}},{"type":"Feature","properties":{"resourceCoords":[311.0,1238.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.08856217566711,42.77177466177936]}}]}}]}