{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03879_004.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Webster, Massachusetts | 1904 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"27"},{"label":"placed","value":"18"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef-snap 13, georef 4, snap:1 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"7 sheet(s) cut into 18 panels"},{"label":"unplaced pages","value":"p11__2 (tier 1, 42.04967,-71.88130 +/-113m); p12__2 (tier 1, 42.04897,-71.87527 +/-146m); p12__3 (tier 1, 42.04811,-71.87063 +/-125m); p12__4 (tier 1, 42.04998,-71.86952 +/-147m); p13__2 (tier 1, 42.04721,-71.88780 +/-100m); p17__1 (tier 1, 42.04039,-71.88235 +/-128m); p17__3 (tier 1, 42.03957,-71.88211 +/-111m); p3__2 (tier 1, 42.05484,-71.87679 +/-100m); p8__2 (tier 1, 42.05320,-71.88332 +/-127m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"6.1,866.1 159.3,889.8 152.8,1047.8 112.2,1598.3 96.7,1775.4 95.9,1870.2 631.6,1768.2 633.3,1776.2 859.1,1720.5 1215.5,1641.6 1217.2,1649.4 1548.1,1732.1 1571.0,1580.1 1612.0,1582.9 1612.0,1284.0 1590.4,1185.8 1419.0,1227.5 1287.6,725.5 1475.6,662.0 1600.5,603.5 1612.0,598.0 1612.0,558.6 1443.8,580.4 1322.5,432.8 1349.0,219.7 1425.4,222.2 1464.0,136.3 1433.1,58.0 1264.7,111.5 935.6,63.8 940.9,21.4 667.3,1.0 611.6,1.0 1.0,649.5 1.0,865.1 6.1,866.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1217.0,1654.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.88125091891624,42.047784305146486]}},{"type":"Feature","properties":{"resourceCoords":[580.0,1412.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.88298730571778,42.048099356330155]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0011__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p11 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0011__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"415.9,115.6 220.3,57.5 33.1,556.9 201.8,623.5 161.8,718.7 1.0,946.4 1.0,983.2 255.8,1190.7 250.5,1291.8 140.3,1412.8 131.2,1750.9 46.4,1770.0 55.0,1845.2 560.1,1871.7 725.8,1753.0 943.2,1767.9 1101.7,1912.0 1132.5,1912.0 1199.8,1841.5 1447.6,1585.4 1612.0,1420.5 1612.0,1268.0 1504.9,1080.5 1439.1,976.4 1307.0,782.7 1144.0,593.9 1022.0,447.9 778.3,172.0 689.8,163.0 651.3,118.8 637.8,151.6 569.5,142.9 591.7,109.6 555.4,140.5 415.9,115.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0011__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[215.0,64.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.88136594180548,42.04958013913278]}},{"type":"Feature","properties":{"resourceCoords":[365.0,1901.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.87792809830626,42.047195978235145]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0012__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p12 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3712.0"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0012__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"191.9,725.5 219.9,818.1 204.9,844.8 226.8,841.0 467.8,854.6 610.6,926.5 927.8,918.5 964.3,646.1 1313.0,553.3 1361.9,656.1 1507.2,623.1 1575.3,221.2 1459.5,118.2 1336.9,125.7 1340.9,144.8 1088.5,145.6 799.7,103.5 532.2,87.6 204.1,84.0 8.4,90.2 15.2,114.5 91.4,386.5 191.9,725.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0012__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1339.0,179.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.87321176455933,42.048648282069735]}},{"type":"Feature","properties":{"resourceCoords":[544.0,67.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.8750630850042,42.0493274069068]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0013__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p13 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.03"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0013__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1551.5,84.7 610.4,85.8 576.5,512.9 471.0,512.0 67.9,1743.2 1115.5,1912.0 1296.9,1912.0 1612.0,368.7 1612.0,1.0 1611.3,1.0 1551.5,84.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0013__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.88821387701343,42.04751513738414]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.88762212378681,42.047607092710585]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.88747629038873,42.04708225898483]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.88806804361535,42.04699030365838]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"116.4,891.0 83.1,1117.3 58.0,1118.9 142.2,1499.2 129.3,1773.0 164.5,1820.8 373.8,1834.6 912.8,1825.1 906.0,1846.4 1425.4,1692.1 1421.1,1628.6 1414.9,1540.6 1412.4,1376.2 1418.3,1204.7 1438.5,1026.3 1493.9,471.8 1504.6,312.5 1350.6,284.6 1295.4,272.6 1243.8,259.8 1178.0,240.0 1146.5,231.4 927.0,147.5 780.6,85.7 669.3,44.3 503.7,6.3 451.6,1.0 234.6,1.0 110.9,108.8 211.8,237.1 143.5,785.4 128.0,811.8 116.5,890.2 116.4,891.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1434.0,993.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.88416953320791,42.04768936358885]}},{"type":"Feature","properties":{"resourceCoords":[1372.0,312.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.88459198731562,42.048970884731645]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1558.5,1530.0 1417.5,1531.2 1481.9,1043.7 1509.2,812.5 1511.7,795.2 1562.7,448.9 1572.2,370.3 1375.0,104.4 1354.5,1.0 1199.2,1.0 1173.7,2.2 1165.2,66.4 616.4,116.0 627.4,96.1 130.0,8.8 40.8,150.5 101.6,149.8 50.0,229.4 112.0,183.8 129.0,220.3 79.9,376.4 124.5,566.6 55.8,609.8 125.7,604.9 142.2,747.0 129.2,1075.2 51.5,1205.8 96.5,1290.3 54.5,1781.8 109.7,1733.8 306.7,1858.2 570.3,1895.5 627.8,1884.3 682.2,1912.0 722.6,1912.0 851.9,1912.0 854.8,1902.1 917.9,1912.0 1083.6,1912.0 1096.0,1872.2 1528.1,1870.0 1521.8,1595.3 1558.5,1530.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1481.0,1045.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.88231107312062,42.04481216769989]}},{"type":"Feature","properties":{"resourceCoords":[594.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.88373382642949,42.04279056826932]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"408.3,841.0 420.1,763.4 232.8,494.1 215.4,390.0 36.5,386.7 50.5,298.9 85.7,136.9 105.7,63.0 659.5,100.2 659.0,108.5 895.9,111.5 1267.0,125.3 1266.7,133.5 1571.4,299.9 1527.5,402.4 1581.3,1106.5 1493.1,1481.0 1488.5,1797.8 857.5,1782.1 804.0,1859.4 399.6,1865.5 371.4,1912.0 231.7,1908.9 310.2,1427.9 344.2,1199.6 408.3,841.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[652.0,106.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.8827502265176,42.04740745453394]}},{"type":"Feature","properties":{"resourceCoords":[242.0,1884.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.88203913464135,42.04395562321259]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0017__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p17 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.98"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"2367.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4084.8"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0017__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1030.2,12.6 1030.0,22.9 867.8,68.8 808.2,57.0 756.3,83.2 766.1,81.9 742.8,697.1 836.4,1164.9 637.4,1661.0 634.7,1795.6 674.5,1833.9 1138.2,1888.9 1491.9,1801.1 1434.7,1612.6 1572.2,1182.9 1584.5,524.3 1485.9,417.8 1477.6,140.7 1248.6,74.4 1250.6,1.0 1126.3,1.0 1030.2,12.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0017__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1024.5,491.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.882994,42.041968]}},{"type":"Feature","properties":{"resourceCoords":[1398.2,1610.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.881828,42.039891]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p2 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.66"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"548.4,1868.9 907.8,1874.3 908.9,1831.2 1607.2,1765.3 1516.1,1423.5 1567.4,1406.6 1568.3,1249.0 944.7,1198.0 944.4,1196.0 938.1,1196.1 939.0,1161.1 899.1,902.8 952.8,138.1 939.6,138.1 939.3,21.3 610.9,20.4 610.7,29.6 259.3,49.7 145.2,136.9 149.4,433.7 58.1,575.2 30.9,769.6 103.7,1789.0 164.7,1799.9 549.6,1808.2 548.4,1868.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[576.0,1866.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.87919114564896,42.05640653586916]}},{"type":"Feature","properties":{"resourceCoords":[924.0,1866.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.87827566832514,42.056380971224705]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p2 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.61"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3808.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2643.2"},{"label":"split_canvas_h","value":"2648.0"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1308.9,661.0 1322.3,661.0 1322.6,657.0 1609.7,652.9 1598.8,188.7 1532.6,106.8 1588.3,97.7 1598.8,5.7 1395.6,6.6 1454.4,38.9 1419.3,76.0 1318.9,16.6 1299.4,32.1 1269.4,4.4 982.0,1.5 975.3,541.4 1308.5,542.0 1308.9,661.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[952.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.8789225759616,42.0610482245538]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.8772093723962,42.06099915439951]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,662.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.87727583323384,42.059730411448605]}},{"type":"Feature","properties":{"resourceCoords":[952.2,662.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.87898903679924,42.059779481602895]}},{"type":"Feature","properties":{"resourceCoords":[1308.1,542.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.878053,42.059983]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p2 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.69"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3752.4"},{"label":"split_canvas_y","value":"2648.0"},{"label":"split_canvas_w","value":"2699.6"},{"label":"split_canvas_h","value":"2136.4"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1055.5,1193.3 1586.1,1167.1 1537.5,1093.2 1585.4,1070.5 1591.5,826.5 1410.0,748.0 1434.2,684.7 1205.8,673.5 1107.0,740.6 1068.7,698.0 1045.7,754.0 975.4,676.9 988.2,1146.3 1055.5,1193.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0002__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1252.0,945.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.877962633489,42.06300359715326]}},{"type":"Feature","properties":{"resourceCoords":[1252.0,1027.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.87793323338849,42.06285454010886]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p3 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.87"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1115.6,1527.6 1111.8,1493.5 1004.4,1231.0 1165.8,1141.2 1369.5,1032.4 1612.0,898.3 1612.0,824.4 1428.5,149.3 721.5,219.6 720.6,263.2 356.6,259.5 357.5,198.1 1.0,192.1 1.0,192.3 67.8,208.9 34.7,1406.8 119.5,1592.2 238.9,1601.1 269.2,1655.8 277.9,1860.8 647.9,1812.7 649.7,1799.0 1108.3,1796.1 1109.5,1784.1 1115.6,1527.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[701.0,854.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.878435138368,42.055228586494145]}},{"type":"Feature","properties":{"resourceCoords":[701.0,264.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.87837008732892,42.056366030492065]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p4","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.36"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.0,1177.7 1612.0,1240.6 1255.8,1146.6 1251.0,1559.0 1251.2,1862.6 151.9,1591.3 162.0,1537.1 21.6,1458.8 127.0,1299.3 54.7,1207.9 26.7,949.7 49.6,260.3 134.8,137.7 352.1,81.3 799.2,53.5 943.9,141.9 1082.5,38.2 1504.3,76.5 1563.8,366.2 1569.1,1124.9 1612.0,1146.4 1612.0,1177.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1251.0,1559.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.875328,42.055347]}},{"type":"Feature","properties":{"resourceCoords":[1251.0,1836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.875967,42.055109]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p5","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1325.2,1726.6 972.7,1447.9 699.7,1794.3 634.4,1746.1 411.0,1606.1 378.9,1591.6 90.7,1548.6 96.1,1358.9 107.0,1121.8 115.9,837.3 54.4,799.5 116.5,816.8 125.3,507.2 142.5,86.7 502.9,193.1 505.7,97.0 633.3,165.8 883.4,80.1 956.3,101.5 959.8,90.7 1536.2,170.6 1573.2,435.2 1509.9,825.4 1558.1,1038.9 1612.0,1067.9 1612.0,1182.5 1592.5,1249.1 1478.2,1576.0 1394.1,1799.6 1325.2,1726.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1255.0,854.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.8747458,42.05317]}},{"type":"Feature","properties":{"resourceCoords":[1673.0,974.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.8745118,42.0523719]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"545.9,82.8 546.5,68.8 1011.2,23.8 1010.5,92.0 1447.2,109.8 1428.3,554.6 1409.7,652.3 1349.1,798.8 1320.4,918.6 1316.7,1047.9 1353.2,1516.6 1375.9,1879.8 1254.0,1863.0 1020.8,1839.3 771.5,1842.2 581.4,1841.5 213.4,1850.2 149.6,1912.0 90.8,1912.0 38.2,1667.2 159.1,1443.0 157.2,1321.2 127.0,1095.5 43.4,1006.1 53.2,703.3 136.9,469.6 119.9,235.0 180.6,205.4 175.3,165.6 545.9,82.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1431.0,220.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.87648518353878,42.052905084094846]}},{"type":"Feature","properties":{"resourceCoords":[468.0,920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.87915864907283,42.051831100877315]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"59.5,230.7 60.0,446.4 1.0,550.1 1.0,574.3 34.6,565.0 59.0,558.2 64.6,755.3 60.0,1085.5 43.2,1354.8 1.0,1638.7 1.0,1899.2 19.2,1895.5 18.3,1879.4 593.9,1878.3 637.1,1804.4 1136.7,1730.9 1220.4,1643.7 1479.4,1566.5 1610.4,708.4 1612.0,681.3 1612.0,664.0 1565.2,618.0 1530.8,558.6 1374.5,253.5 1271.7,40.5 1116.7,7.5 993.8,1.2 866.0,21.1 412.1,142.2 59.5,230.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[570.0,1061.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.87476339764527,42.05023124185656]}},{"type":"Feature","properties":{"resourceCoords":[634.0,1680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.87320928962214,42.049981861753004]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p8 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"237.8,1824.4 468.5,1864.6 547.1,1799.2 481.7,1720.7 550.7,1652.3 599.5,1316.4 599.7,1305.1 601.1,1305.1 601.4,1303.3 1479.8,1318.3 1587.3,1261.9 1567.3,55.3 1193.3,33.8 537.8,151.8 86.0,74.2 1.0,137.0 1.0,426.1 29.4,617.8 80.0,960.7 88.0,959.5 127.5,1623.7 1.0,1604.7 1.0,1686.8 118.8,1886.8 237.8,1824.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1457.0,414.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.8842350815587,42.054405984670794]}},{"type":"Feature","properties":{"resourceCoords":[52.0,953.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.88468051879653,42.05158170893202]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Webster, Massachusetts | 1904 | sanborn03879_004 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.74"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T18:30:44Z","modified":"2026-10-19T18:30:44Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"92.7,1176.2 102.0,937.5 114.0,776.4 117.6,655.8 100.3,484.0 85.7,419.9 18.8,223.6 35.0,233.0 333.6,85.9 594.3,89.9 1125.0,313.0 1476.3,178.1 1555.8,380.6 1612.0,361.4 1612.0,417.6 1590.7,485.0 1547.4,621.9 1515.7,819.0 1508.2,865.7 1460.8,1159.8 1468.7,1161.0 1306.7,1803.4 1191.5,1747.0 1167.3,1823.3 1140.9,1722.2 317.2,1318.8 107.0,1383.8 101.4,1333.0 96.9,1279.2 94.6,1209.8 94.6,1209.3 92.7,1176.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038791904:03879_1904-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[128.0,591.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.88665930227674,42.04932102273096]}},{"type":"Feature","properties":{"resourceCoords":[128.0,1434.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.88453806028897,42.04904012751073]}}]}}]}