{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn04287_012.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Duluth, Minnesota | 1955 | mapsnap generated fit (2026-10-18)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-18"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"91"},{"label":"placed","value":"55"},{"label":"unplaced","value":"36"},{"label":"fit sources","value":"georef 39, georef-snap 14, georef-street 1, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"13 sheet(s) cut into 29 panels"},{"label":"unplaced pages","value":"p24 (tier 2, 46.78294,-92.10979 +/-106m); p26 (tier 2, 46.76177,-92.12656 +/-108m); p28__2 (tier 1, 46.76169,-92.13407 +/-106m); p30 (tier 2, 46.75820,-92.13131 +/-111m); p31__1 (tier 3, 46.75348,-92.12630 +/-528m); p31__2 (tier 3, 46.75348,-92.12630 +/-528m); p38 (tier 2, 46.77704,-92.11131 +/-110m); p39 (tier 1, 46.78180,-92.10389 +/-262m); p42 (tier 2, 46.77618,-92.10277 +/-100m); p43 (tier 1, 46.77099,-92.12600 +/-100m); p45__1 (tier 1, 46.76071,-92.13327 +/-190m); p45__2 (tier 1, 46.76211,-92.13363 +/-183m); p45__3 (tier 1, 46.76210,-92.13348 +/-182m); p46 (tier 2, 46.78529,-92.10683 +/-100m); p47 (tier 1, 46.76869,-92.11422 +/-264m); p48 (tier 2, 46.77245,-92.11107 +/-163m); p49__1 (tier 2, 46.77241,-92.10258 +/-100m); p49__2 (tier 2, 46.77241,-92.10258 +/-100m); p50 (tier 3, 46.76736,-92.11072 +/-528m); p51 (tier 4, 46.76875,-92.12891 +/-5840m); p52__1 (tier 3, 46.73979,-92.15180 +/-528m); p52__2 (tier 3, 46.73979,-92.15180 +/-528m); p53 (tier 3, 46.76061,-92.10712 +/-528m); p54 (tier 3, 46.76735,-92.10351 +/-1329m); p55 (tier 3, 46.75781,-92.10498 +/-528m); p56 (tier 3, 46.74519,-92.15591 +/-528m); p57__1 (tier 4, 46.76875,-92.12891 +/-5840m); p57__2 (tier 4, 46.76875,-92.12891 +/-5840m); p59__2 (tier 2, 46.74664,-92.15795 +/-224m); p63 (tier 2, 46.74431,-92.15613 +/-136m); p66 (tier 1, 46.74900,-92.14126 +/-270m); p67__1 (tier 1, 46.75179,-92.14899 +/-221m); p67__2 (tier 1, 46.75370,-92.14936 +/-203m); p67__3 (tier 1, 46.76334,-92.11240 +/-129m); p68 (tier 1, 46.75770,-92.13668 +/-266m); p69__2 (tier 1, 46.74935,-92.16854 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p1","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0001","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"242.7,1859.7 51.0,1776.1 118.2,1714.3 85.5,1404.3 153.0,1361.5 162.9,1245.5 71.3,1135.5 86.0,781.8 149.5,713.6 66.3,644.4 84.8,199.8 136.2,181.7 244.8,72.2 415.2,41.4 758.4,65.7 825.3,159.6 907.0,84.5 911.0,259.1 1397.1,251.6 1457.4,264.4 1504.1,274.2 1504.2,270.6 1594.3,268.9 1594.5,300.1 1544.8,285.9 1532.8,437.8 1603.2,595.3 1591.0,1001.2 1596.0,1300.0 1596.0,1842.0 923.4,1829.7 242.7,1852.2 242.7,1859.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[916.0,1308.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.136744,46.7694724]}},{"type":"Feature","properties":{"resourceCoords":[1596.0,1842.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1343936,46.769734]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p10","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.90"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0010","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"107.4,76.7 432.3,30.1 1486.1,60.8 1501.5,151.0 1533.8,687.8 1504.8,687.7 1514.7,1239.8 1506.5,1516.1 1516.7,1782.8 121.8,1794.0 128.0,1519.5 120.7,1244.0 85.0,663.8 38.0,664.3 107.4,76.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[123.0,1244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1173394,46.7798367]}},{"type":"Feature","properties":{"resourceCoords":[123.0,702.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1184152,46.780505]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p11","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0011","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"131.2,150.9 233.1,68.0 894.8,37.6 1343.2,43.4 1486.5,107.8 1515.4,775.6 1526.2,777.4 1531.0,1300.0 1512.6,1300.0 1557.8,1841.9 843.3,1865.0 146.8,1857.5 136.6,1593.2 144.3,1319.3 134.0,772.0 162.7,772.0 130.2,239.9 114.8,150.4 131.2,150.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[826.0,772.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.114697,46.7833487]}},{"type":"Feature","properties":{"resourceCoords":[134.0,772.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1159554,46.7824008]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.41"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0012","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"136.0,1885.8 87.7,1328.6 106.7,1328.5 100.1,791.0 88.9,789.2 57.0,102.5 81.0,113.2 365.2,46.2 1441.1,67.3 1603.1,477.6 1547.8,1838.4 1497.0,1905.1 331.8,1864.2 199.6,1926.5 198.7,1885.6 141.6,1885.7 136.0,1885.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[800.0,1326.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.11113364915177,46.78458064543911]}},{"type":"Feature","properties":{"resourceCoords":[800.0,1869.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1100807147984,46.78392099366077]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0013__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p13 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.54"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6660.0"},{"label":"split_canvas_h","value":"8072.0"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0013__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0013","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"528.0,1918.0 547.9,1899.9 919.8,1894.4 949.8,1927.5 966.6,2017.0 985.3,2017.0 985.2,1996.9 984.5,1883.2 990.4,1740.9 975.1,1707.6 975.3,1707.7 968.0,1661.2 932.9,1623.4 907.2,1414.2 926.2,1396.7 908.4,1283.7 829.0,1195.3 820.2,1178.0 821.0,1156.3 874.9,1158.9 970.7,1040.3 940.0,1007.7 1226.5,968.8 1302.2,1049.8 1485.1,880.5 1551.7,822.4 1559.0,584.5 1486.1,505.8 1576.0,423.0 1510.3,155.2 1449.1,88.1 1323.6,50.8 906.9,56.7 577.5,109.1 386.3,191.9 325.6,141.5 292.4,171.5 256.6,148.7 232.9,157.8 234.8,235.6 249.7,251.8 211.6,525.3 242.8,559.0 245.8,680.7 180.8,740.6 171.2,756.5 170.9,764.2 184.7,784.5 299.9,905.8 339.5,960.5 345.9,969.0 348.9,1137.5 347.4,1137.5 219.5,1496.5 251.6,1465.5 469.4,1814.3 529.1,1877.2 528.0,1918.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0013__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1122.0,855.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.14025140527416,46.76107091054202]}},{"type":"Feature","properties":{"resourceCoords":[650.0,339.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.14395042273941,46.761059731339806]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0013__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p13 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.30"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4204.0"},{"label":"split_canvas_y","value":"4420.4"},{"label":"split_canvas_w","value":"2456.0"},{"label":"split_canvas_h","value":"3651.6"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0013__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0013","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1563.2,1177.4 1538.9,1185.5 1434.5,1121.9 1202.8,1130.9 1099.6,1164.8 1093.6,1310.4 1182.0,1434.2 1208.4,1590.6 1123.5,1660.9 1417.8,1700.1 1425.0,1720.1 1477.3,1755.2 1477.4,1754.8 1487.3,1739.9 1552.9,1684.6 1555.3,1566.6 1526.5,1532.5 1575.3,1269.2 1561.7,1252.8 1563.2,1177.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0013__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1325.0,1297.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.14646762889029,46.759410725745326]}},{"type":"Feature","properties":{"resourceCoords":[1627.0,1645.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.14395630953176,46.759450384466064]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p14","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"21"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0014","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"389.2,1799.6 375.9,1708.0 307.8,1632.8 262.2,1220.7 300.0,1186.5 267.6,963.8 113.4,788.0 96.5,753.7 98.6,711.2 204.6,717.4 395.9,486.4 336.2,421.5 900.9,351.7 1048.0,513.0 1411.7,184.2 1482.6,261.5 1461.7,778.8 1489.5,779.8 1486.0,1325.0 1476.1,1605.4 1468.9,1891.6 638.3,1871.8 556.1,1862.8 456.9,1835.5 389.2,1799.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1486.0,1325.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1364326,46.7606935]}},{"type":"Feature","properties":{"resourceCoords":[1048.0,513.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1388475,46.7610805]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p15","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0015","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"192.1,1608.9 199.9,1331.6 199.4,792.5 171.9,791.6 189.0,280.1 118.4,204.2 130.4,193.8 806.9,275.6 833.0,252.0 1537.6,252.1 1568.0,252.0 1571.1,527.7 1569.8,1062.4 1560.2,1600.5 1565.3,1866.8 875.7,1867.5 186.9,1891.8 192.1,1608.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0015/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[833.0,252.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1374666,46.7629142]}},{"type":"Feature","properties":{"resourceCoords":[1568.0,252.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1361315,46.7639328]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p16","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0016","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"140.5,1588.9 151.7,1045.1 154.4,504.8 152.0,226.1 839.2,228.6 836.6,220.0 1460.5,247.7 1461.3,265.1 1537.5,277.4 1532.0,497.3 1537.4,770.3 1533.3,1044.6 1533.6,1590.8 1535.8,1865.6 1257.8,1869.2 842.4,1874.5 145.0,1858.0 140.5,1588.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1534.0,1323.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1314537,46.7644859]}},{"type":"Feature","properties":{"resourceCoords":[145.0,1858.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1328695,46.7619198]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p17","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0017","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"155.3,1543.3 149.0,995.3 150.0,720.0 141.6,446.1 145.2,185.4 844.9,166.9 1536.5,200.3 1542.0,704.8 1548.9,987.5 1545.1,1261.2 1550.7,1522.3 1548.8,1799.0 848.0,1806.0 160.6,1819.0 155.3,1543.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[150.0,720.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1325567,46.7651691]}},{"type":"Feature","properties":{"resourceCoords":[848.0,1806.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1291446,46.7647706]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p18","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0018","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"136.6,1526.3 132.4,1264.2 137.6,989.6 132.2,705.8 129.3,199.6 835.0,164.8 1529.6,148.7 1524.2,426.7 1526.8,702.4 1533.8,982.9 1529.8,1207.8 1532.3,1479.6 1530.0,1799.0 1491.2,1797.6 815.8,1801.8 133.3,1804.0 136.6,1526.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[830.0,1258.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1277252,46.7673455]}},{"type":"Feature","properties":{"resourceCoords":[1530.0,1799.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1253988,46.7676319]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p19","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0019","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"142.2,141.1 551.0,180.3 772.9,178.9 824.0,206.5 1364.9,258.4 1298.7,153.5 1342.1,179.9 1373.9,184.6 1515.2,183.7 1514.4,477.2 1493.9,512.5 1505.4,541.6 1531.3,1314.2 1527.6,1435.3 1474.3,1478.6 1523.9,1575.9 1530.0,1815.0 825.4,1815.4 140.5,1820.4 143.2,1503.5 141.0,1233.8 145.2,1010.7 138.7,732.3 136.4,458.8 142.0,183.0 142.2,141.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[142.0,183.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1286704,46.7696565]}},{"type":"Feature","properties":{"resourceCoords":[1530.0,1815.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1229037,46.7695417]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p2","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.00"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0002","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"104.7,1057.1 134.0,1360.2 177.8,1910.7 873.0,1832.8 1399.8,1784.9 1545.0,1759.0 1556.4,1753.9 1475.2,1324.2 1568.9,805.0 1583.7,242.4 1481.3,127.7 954.2,96.2 874.0,21.9 871.1,1.0 870.8,1.0 849.5,148.3 38.6,191.8 51.6,344.5 1.0,334.2 1.0,491.1 84.3,643.6 104.7,1057.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[800.0,1304.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1342746,46.7713406]}},{"type":"Feature","properties":{"resourceCoords":[800.0,490.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.13577,46.7724458]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.68"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0020","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"109.8,1829.8 1395.3,1824.5 1617.0,1823.1 1643.2,1822.9 1523.2,1716.0 1572.1,600.1 1499.2,184.7 1045.2,92.0 650.3,176.6 292.0,168.1 241.9,112.3 1.0,150.3 1.0,168.5 97.3,168.1 96.0,467.0 75.1,503.0 86.8,532.6 111.9,1319.7 107.9,1443.0 53.6,1487.0 103.9,1586.3 109.8,1829.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1505.0,886.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.12229343055574,46.772562684089316]}},{"type":"Feature","properties":{"resourceCoords":[1505.0,1279.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.12152085015207,46.77208699953549]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0021","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"207.0,209.8 206.7,183.3 912.5,180.9 1606.2,175.5 1613.8,451.3 1617.5,724.8 1607.3,1224.8 1571.5,1269.2 1455.5,1435.3 1429.6,1496.6 1446.0,1568.5 1496.6,1636.3 1664.0,1795.6 1664.0,1823.3 1664.0,1825.7 211.6,1824.8 211.4,1828.0 38.5,1799.5 71.8,1769.4 62.4,1330.7 129.5,1031.4 61.8,715.0 63.8,256.0 100.8,176.6 207.0,209.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[223.0,728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.11763635683192,46.776601324542945]}},{"type":"Feature","properties":{"resourceCoords":[1594.0,184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.11625495950716,46.77912995393212]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p22","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0022","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"249.7,1823.7 249.4,1793.8 81.0,1637.3 29.9,1570.5 12.8,1499.2 37.7,1437.9 151.1,1271.3 186.2,1226.8 190.4,729.4 183.6,457.5 172.7,183.3 1563.5,157.0 1572.6,698.2 1555.0,698.6 1555.4,1687.7 1495.7,1690.8 1409.7,1770.6 382.3,1870.8 383.9,1822.2 249.7,1823.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[876.0,717.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.11391312797507,46.77943823426224]}},{"type":"Feature","properties":{"resourceCoords":[1550.0,171.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.11375754711207,46.78103104320574]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p23","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.77"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0023","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1543.0,1805.4 1542.3,1867.4 1499.0,1820.3 938.7,1843.8 212.1,1719.2 157.0,1721.9 161.0,725.1 178.8,724.8 172.0,179.3 878.0,183.0 1607.8,155.5 1664.0,155.3 1664.0,196.0 1592.5,229.9 1559.8,631.0 1615.9,1281.6 1564.8,1749.9 1664.0,1790.2 1664.0,1803.0 1603.4,1804.2 1543.0,1805.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[878.0,724.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1114171,46.7813429]}},{"type":"Feature","properties":{"resourceCoords":[878.0,183.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1124793,46.7820114]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p25","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0025","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1593.7,237.9 1609.1,708.0 1550.4,918.5 1625.7,1157.4 1558.9,1325.7 1557.9,1622.9 1664.0,1741.6 1664.0,1796.7 1664.0,1837.5 984.4,1830.1 669.3,1813.5 669.4,1836.0 124.7,1821.9 124.3,1788.0 120.5,1508.3 114.7,819.2 115.2,116.6 386.6,117.4 670.4,124.7 986.0,125.9 1604.5,227.8 1593.7,237.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[673.0,817.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1280275,46.7640918]}},{"type":"Feature","properties":{"resourceCoords":[986.0,126.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1261715,46.7646534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p27","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0027","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"145.5,1201.5 160.6,507.1 155.0,126.9 694.2,140.2 694.1,117.8 1006.0,133.8 1591.2,139.3 1569.8,510.6 1556.5,1204.5 1549.4,1204.5 1577.7,1889.3 1012.3,1879.8 1012.4,1897.4 697.1,1903.5 697.0,1888.0 427.4,1889.9 145.7,1895.5 145.5,1201.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1012.0,512.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1298829,46.7617993]}},{"type":"Feature","properties":{"resourceCoords":[697.0,1888.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1329983,46.7602925]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0028__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p28 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.56"},{"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":"6660.0"},{"label":"split_canvas_h","value":"8072.0"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0028__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0028","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"100.8,1911.2 165.2,1860.1 544.3,1899.2 1040.9,1851.3 1035.8,1217.8 1501.6,1168.4 1469.2,883.7 1553.9,414.1 1483.3,173.9 1194.8,72.3 917.4,58.8 588.0,161.1 396.8,142.7 103.3,141.6 84.0,512.1 74.6,1204.5 67.5,1204.5 100.8,1911.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0028__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[530.0,1200.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1291152,46.759611]}},{"type":"Feature","properties":{"resourceCoords":[530.0,510.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.12786,46.7605591]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p29","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0029","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"418.0,1907.2 136.8,1891.2 70.6,1920.4 107.0,1852.1 134.7,1752.6 144.1,1670.1 166.6,835.9 149.0,136.0 433.4,133.1 705.6,133.8 705.5,149.4 1023.8,146.3 1023.9,128.5 1594.5,143.6 1595.3,167.6 1573.5,184.2 1627.8,1126.2 1544.6,1934.2 1057.9,1882.1 694.3,1944.4 694.6,1909.6 642.6,1909.2 418.0,1907.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[149.0,1519.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1365652,46.7590592]}},{"type":"Feature","properties":{"resourceCoords":[149.0,136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1341208,46.7609633]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p32","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.92"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0032","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1127.5,1938.0 882.4,1833.8 299.6,1850.7 46.2,1570.7 154.1,962.0 159.1,650.7 169.7,371.0 173.7,103.3 846.0,113.0 1511.3,120.6 1549.5,122.7 1544.0,384.8 1541.8,670.9 1534.8,943.2 1536.5,1069.8 1524.3,1106.0 1446.8,1194.4 1528.3,1258.7 1518.4,1846.2 1127.5,1938.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0032/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[846.0,113.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1266728,46.7666589]}},{"type":"Feature","properties":{"resourceCoords":[154.0,962.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1261715,46.7646534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p33","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.68"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0033","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1441.2,1712.3 960.4,1841.2 209.2,1811.0 192.6,1815.3 190.1,1237.9 108.8,1176.5 183.0,1088.0 194.3,1052.2 190.0,927.8 191.2,660.2 187.5,379.1 187.4,121.5 855.6,113.5 1543.0,110.0 1541.4,372.1 1549.6,655.9 1544.0,954.0 1535.6,954.0 1528.4,1251.3 1500.8,1749.1 1441.2,1712.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0033/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1544.0,954.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1211791,46.768469]}},{"type":"Feature","properties":{"resourceCoords":[1543.0,110.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1229037,46.7695417]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p34","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.94"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0034","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1447.4,1932.8 1199.7,1889.4 915.1,1958.7 769.4,1852.7 332.6,1841.7 215.9,1778.7 119.9,1826.0 90.3,1807.6 119.8,1294.6 127.9,988.2 136.5,988.2 142.9,681.0 135.1,388.6 137.3,118.4 1406.1,107.9 1551.1,106.4 1563.3,338.8 1554.7,333.8 1522.0,404.7 1529.0,663.0 1524.6,663.0 1534.8,1240.1 1517.7,1240.7 1578.7,1841.6 1447.4,1932.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0034/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[832.0,663.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1205735,46.7698149]}},{"type":"Feature","properties":{"resourceCoords":[1529.0,663.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1193198,46.7707622]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p35","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.61"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0035","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"132.1,1230.2 148.9,1229.8 145.6,659.0 150.0,659.0 146.2,403.5 179.3,333.8 187.8,338.8 178.4,108.8 251.4,108.9 277.0,109.0 307.1,136.2 835.7,86.0 1438.2,174.2 1495.9,123.2 1520.1,667.0 1511.4,666.9 1504.4,1070.5 1510.8,1067.2 1424.7,1894.6 1354.1,1896.5 1203.9,1818.9 932.0,1884.8 488.2,1811.3 273.1,1875.5 194.1,1819.2 185.3,1825.1 132.1,1230.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0035/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[840.0,659.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1180814,46.7717206]}},{"type":"Feature","properties":{"resourceCoords":[150.0,659.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1193198,46.7707622]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p36","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.35"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0036","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"92.0,1884.0 158.7,1063.3 152.4,1066.6 150.3,667.0 158.9,667.0 122.8,129.4 146.1,107.8 713.6,53.0 1255.0,150.2 1339.0,72.3 1508.2,98.2 1475.2,955.2 1454.5,955.2 1492.3,1823.4 1287.5,1832.3 1261.9,1831.5 86.9,1919.0 22.2,1887.4 92.0,1884.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0036/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.1184787,46.7732862]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.1153832,46.775575]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,2018.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.1113329,46.7730054]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2018.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.1144284,46.7707166]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p37","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.08"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0037","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"259.7,1874.2 178.3,1047.4 198.1,1046.3 184.7,223.5 1664.0,126.6 1664.0,173.1 1604.5,227.8 1575.3,822.1 1612.8,1624.5 1629.4,1640.7 1609.0,1746.8 1664.0,1742.9 1664.0,1751.0 1664.0,1774.7 809.6,1897.2 794.3,1876.6 259.7,1874.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0037/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[862.0,123.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1142908,46.7763031]}},{"type":"Feature","properties":{"resourceCoords":[1556.0,123.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1128635,46.7772489]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0039a/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p39a","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.56"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0039a/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0039a","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1484.6,1828.0 1482.7,1740.5 1472.8,1300.8 1484.1,754.0 1483.0,206.0 1611.8,203.8 1316.3,100.2 328.2,246.4 239.4,211.6 239.7,237.1 119.6,240.9 1.0,244.7 1.0,368.6 93.8,467.2 95.5,1771.8 72.1,1917.7 1484.6,1828.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0039a/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1485.0,1845.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.105156,46.7808864]}},{"type":"Feature","properties":{"resourceCoords":[1483.0,206.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1067639,46.7819203]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0039b/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p39b","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0039b/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0039b","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"447.1,252.4 1305.6,165.7 1574.0,317.6 1584.7,1801.3 1609.1,1823.7 208.5,1867.0 205.2,1761.7 191.0,1318.0 197.3,766.1 191.0,213.0 321.0,209.5 447.1,252.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0039b/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[191.0,213.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1067639,46.7819203]}},{"type":"Feature","properties":{"resourceCoords":[191.0,1318.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1057005,46.7812219]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0003__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p3 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.00"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3205.6"},{"label":"split_canvas_w","value":"6660.0"},{"label":"split_canvas_h","value":"4866.4"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0003__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0003","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"97.3,923.0 103.7,1869.1 229.9,1945.7 216.3,2015.0 1272.5,2014.3 1607.1,1931.4 1598.5,835.1 206.0,853.6 97.3,923.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0003__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1526.0,1899.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.0821901,46.8097453]}},{"type":"Feature","properties":{"resourceCoords":[1526.0,846.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.0843699,46.8110912]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p3 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.84"},{"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":"6660.0"},{"label":"split_canvas_h","value":"3260.0"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0003","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"48.5,612.5 50.5,790.9 546.9,789.0 608.3,802.6 656.0,809.6 748.0,808.9 748.8,687.3 1561.8,717.5 1598.0,566.2 1600.6,247.4 1461.7,136.7 995.5,153.4 824.1,72.0 300.9,90.9 94.1,188.5 78.3,585.8 48.5,612.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[82.0,780.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.13884400241524,46.77086212177559]}},{"type":"Feature","properties":{"resourceCoords":[1605.0,506.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.13664600820475,46.77329263067598]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p4","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.03"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0004","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"43.9,1879.0 437.8,1835.1 675.0,1783.7 736.0,1801.9 1326.5,1736.0 1232.0,1638.6 1283.0,1656.6 1284.4,1657.1 1319.5,1655.0 1368.3,1644.5 1364.3,1625.5 1610.0,1531.8 1494.0,1447.2 1462.9,1028.5 1587.8,545.4 1514.2,184.8 1081.4,235.4 757.0,137.3 56.7,160.9 47.5,797.7 1.0,854.1 1.0,1468.9 43.9,1879.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[-75.0,711.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.13059,46.7712418]}},{"type":"Feature","properties":{"resourceCoords":[728.0,1793.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.127422,46.7705658]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p40","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.04"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0040","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1603.3,1046.3 1612.6,1166.1 1573.2,1822.9 1346.7,1889.0 969.2,1765.7 125.7,1825.8 66.6,1366.2 133.1,1002.0 841.0,972.5 841.0,981.0 1536.1,981.0 1603.3,1046.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0040/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[841.0,981.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.105156,46.7808864]}},{"type":"Feature","properties":{"resourceCoords":[1547.0,981.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1038854,46.7818518]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p41","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.09"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0041","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"535.3,239.0 1450.2,219.1 1554.5,243.1 1569.0,915.9 1526.8,1188.8 1585.2,1464.0 1559.2,1525.8 1557.5,1754.0 1281.4,1754.0 1216.4,1804.7 1153.1,1730.8 859.9,1676.4 803.5,1719.8 622.0,1732.5 487.9,1852.2 248.4,1825.8 172.5,1777.5 136.7,1793.3 160.3,1694.3 97.8,1506.3 123.8,1306.5 85.7,1216.0 61.3,946.0 69.9,835.1 128.0,701.5 118.2,414.1 52.5,306.2 521.4,283.1 523.0,265.9 493.0,265.2 509.4,208.8 535.3,239.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[833.0,266.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1083561,46.7759626]}},{"type":"Feature","properties":{"resourceCoords":[139.0,266.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1107321,46.7740639]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p44","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.03"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0044","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"69.8,266.6 646.6,231.9 926.1,79.5 1503.3,113.4 1565.2,207.8 1515.8,536.1 1518.7,1469.5 1568.3,1663.2 1509.7,1822.0 1367.0,1826.9 1250.7,1907.5 637.6,1934.1 88.0,1807.4 31.1,1117.6 69.8,266.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0044/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.1088956480782,46.786372335716166]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.10602400434756,46.788667722871786]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,2018.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.10198971684525,46.78626759981658]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2018.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.1048613605759,46.78397221266096]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p5","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.83"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0005","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"166.6,168.0 244.0,99.2 551.1,43.8 1542.0,33.7 1650.7,144.8 1664.0,127.7 1664.0,867.0 1664.0,1791.3 1648.0,1791.2 928.4,1787.8 901.6,1811.8 211.2,1725.0 332.2,1621.3 351.5,1148.8 208.0,991.0 388.1,828.4 262.8,294.9 142.5,160.6 166.6,168.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[982.0,1789.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1373694,46.7629858]}},{"type":"Feature","properties":{"resourceCoords":[208.0,991.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1403264,46.7628983]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p58","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"22"},{"label":"confidence","value":"0.84"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0058","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1620.1,685.5 1622.3,1778.0 1591.5,1934.0 1354.9,1963.6 329.2,1972.2 76.7,1928.0 49.8,1865.4 40.2,1491.5 36.4,291.7 66.7,102.3 832.6,57.1 1270.2,91.0 1499.5,72.6 1575.6,204.8 1620.1,685.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0058/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[580.0,117.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1321515,46.8004604]}},{"type":"Feature","properties":{"resourceCoords":[1050.0,117.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1321905,46.7987484]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0059__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p59 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.85"},{"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":"6660.0"},{"label":"split_canvas_h","value":"8072.0"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0059__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0059","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"53.8,689.9 124.8,763.6 80.7,1179.9 383.8,1221.9 495.0,1327.1 507.4,1487.0 449.5,1552.8 128.5,1639.2 166.5,1804.8 813.8,1889.6 1319.1,1858.3 1514.4,1882.8 1546.5,1916.2 1574.8,1916.4 1600.7,849.5 1651.8,849.9 1664.0,849.9 1664.0,527.9 1664.0,329.2 1469.3,359.1 1413.0,367.7 1413.0,421.6 928.9,394.3 928.8,365.1 220.6,391.0 220.2,466.1 53.8,689.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0059__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1413.0,319.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1593748,46.7472855]}},{"type":"Feature","properties":{"resourceCoords":[221.0,319.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1616091,46.7456938]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p6","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0006","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"168.2,69.1 346.9,36.6 1285.0,120.9 1330.0,80.3 1526.4,168.1 1523.1,434.6 1522.8,703.4 1531.0,1252.0 1529.0,1805.0 1528.2,1845.1 1451.6,1833.1 1450.8,1815.6 823.8,1791.2 826.4,1799.8 135.9,1801.1 122.0,1801.2 121.0,1801.2 108.7,147.2 109.7,145.9 168.2,69.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[138.0,714.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1382884,46.765272]}},{"type":"Feature","properties":{"resourceCoords":[1531.0,1252.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1347193,46.7665071]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p60","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.96"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0060","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"97.8,1246.2 98.2,983.6 110.7,981.7 114.6,440.4 105.2,440.4 134.9,174.0 149.7,172.7 194.4,75.2 247.5,130.5 596.0,101.4 902.1,112.9 1095.0,80.6 1320.0,124.2 1429.3,110.9 1472.8,140.4 1520.0,97.5 1516.8,171.5 1514.5,438.8 1513.3,978.0 1512.9,1115.5 1512.9,1131.6 1156.7,1140.3 1156.5,1123.8 798.2,1144.9 798.2,1146.6 443.2,1113.0 443.2,1115.9 109.8,1102.7 110.3,1032.0 98.6,1031.8 98.3,1246.2 97.8,1246.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0060/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1157.0,708.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1560194,46.7511167]}},{"type":"Feature","properties":{"resourceCoords":[445.0,441.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1596967,46.749908]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p61","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"21"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0061","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"208.6,418.4 485.4,363.1 496.1,374.2 819.3,187.9 820.2,188.8 823.4,192.1 1007.3,46.0 1041.2,86.9 1306.3,62.1 1596.3,84.6 1628.6,145.0 1640.0,321.6 1632.3,866.1 1650.4,885.0 1605.5,982.3 1590.7,983.5 1560.2,1249.5 1569.6,1249.6 1564.1,1790.2 1425.1,1811.0 1425.0,1838.1 1181.3,1823.3 1181.3,1808.6 824.7,1820.1 824.3,1858.0 740.0,1970.2 704.7,1933.2 134.1,1935.2 88.3,1897.8 126.9,1470.8 78.2,1223.2 60.8,864.9 167.8,457.2 208.6,418.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0061/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[830.0,1249.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1636692,46.7470654]}},{"type":"Feature","properties":{"resourceCoords":[1187.0,984.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1633759,46.748689]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0062__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p62 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.06"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4467.2"},{"label":"split_canvas_w","value":"2840.0"},{"label":"split_canvas_h","value":"3604.8"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0062__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0062","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"595.0,1810.5 626.5,1844.2 632.1,1839.0 705.9,1500.5 704.4,1309.8 703.3,1183.3 636.7,1145.6 633.9,1148.2 627.9,1169.7 595.0,1810.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0062__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1116.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.15238618930489,46.75483268608314]}},{"type":"Feature","properties":{"resourceCoords":[710.0,1116.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.14990372346952,46.75666524753077]}},{"type":"Feature","properties":{"resourceCoords":[710.0,2018.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.14652954007079,46.754489194276985]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2018.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.14901200590616,46.75265663282936]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0062__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p62 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.86"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6660.0"},{"label":"split_canvas_h","value":"8072.0"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0062__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0062","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"805.4,1850.7 1185.3,1862.0 1186.4,1888.1 1216.0,1853.2 1247.3,1837.5 1349.3,1866.2 1427.8,1840.1 1457.9,1870.2 1498.6,1871.3 1543.0,1329.3 1515.0,1330.0 1569.2,839.3 1547.1,626.8 1594.0,412.4 1583.3,182.3 1517.9,101.3 1384.5,72.6 1264.2,57.0 1076.0,88.5 945.3,51.9 542.6,41.7 270.8,130.7 113.9,146.5 58.6,199.0 57.0,273.7 60.4,542.9 70.8,1085.9 455.6,1076.4 583.7,1073.9 674.4,1117.2 702.8,1116.8 702.9,1129.2 702.9,1130.9 793.2,1174.0 793.9,1210.0 794.2,1320.4 797.6,1480.5 802.2,1615.2 805.3,1847.2 805.4,1850.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0062__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1153.0,1596.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.14765350106302,46.75284792657123]}},{"type":"Feature","properties":{"resourceCoords":[70.0,1333.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.15272402136465,46.750734525848074]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0064/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p64","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.15"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0064/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0064","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1476.5,262.0 1475.7,189.5 1474.6,79.8 1598.9,528.1 1580.9,1942.0 85.0,1928.2 57.3,113.8 1476.5,262.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0064/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.15616459748153,46.745483037824975]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.15301570047588,46.747680151760015]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,2018.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.14915686085915,46.74504644053901]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2018.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.15230575786481,46.74284932660397]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0065/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p65","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0065/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0065","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"206.7,305.8 916.4,255.9 916.3,240.8 1664.0,280.3 1664.0,332.8 1545.2,466.4 1622.2,715.5 1607.8,1838.2 1565.2,1899.1 98.3,1840.6 130.4,1315.8 67.0,922.9 161.1,389.2 98.6,323.8 206.7,305.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0065/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[195.0,1380.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.14712778123487,46.74887005587744]}},{"type":"Feature","properties":{"resourceCoords":[202.0,849.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.14815194586448,46.74955933762713]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0069__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p69 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.89"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6660.0"},{"label":"split_canvas_h","value":"8072.0"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0069__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0069","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1635.2,153.4 1008.2,113.0 576.1,151.9 547.6,305.9 81.1,755.3 69.1,1238.8 158.3,1480.0 189.6,1846.1 681.0,1938.7 1076.7,1929.2 1081.8,1937.5 1081.3,1824.9 1380.3,1346.8 1411.4,1346.4 1583.7,621.2 1586.3,621.3 1595.3,621.1 1635.2,153.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0069__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[578.0,1348.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1705459,46.7484033]}},{"type":"Feature","properties":{"resourceCoords":[1080.0,1348.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1691967,46.7483983]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p7","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0007","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"155.0,180.3 848.4,164.6 1533.2,184.4 1530.6,736.9 1520.5,1256.0 1526.0,1530.1 1535.5,1832.7 850.0,1795.0 156.2,1808.8 158.6,1261.3 151.0,718.0 151.5,451.9 155.0,180.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[151.0,718.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1358243,46.7671704]}},{"type":"Feature","properties":{"resourceCoords":[850.0,1795.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1323953,46.7667965]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p70","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.36"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0070/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0070","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"151.6,421.9 100.9,422.4 90.6,1481.1 62.6,1481.3 106.5,1527.3 1511.7,1668.1 1511.1,1596.3 1510.0,1457.9 1524.4,1457.8 1537.2,401.8 1540.7,354.9 1538.8,204.1 839.1,148.9 839.2,154.7 182.8,139.1 181.6,1.0 158.5,1.0 164.7,421.8 151.6,421.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0070/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[819.0,411.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.15663382279072,46.747822453071905]}},{"type":"Feature","properties":{"resourceCoords":[1541.0,1881.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.15240280436652,46.746848638885396]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p71","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.57"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0071/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0071","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"139.4,208.9 851.5,167.1 851.8,199.8 1559.7,182.4 1559.5,366.4 1563.0,413.0 1552.1,413.0 1592.7,1512.5 1587.7,1517.2 1618.5,1781.0 1554.0,1903.5 388.4,1879.4 206.3,1953.0 206.2,1957.7 90.2,1507.9 90.4,1477.8 104.9,1478.0 134.7,412.1 138.9,364.7 139.4,208.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0071/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[848.0,413.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1539393,46.7497379]}},{"type":"Feature","properties":{"resourceCoords":[1563.0,413.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1526031,46.7506919]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0072/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p72","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0072/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0072","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1544.7,1758.4 813.9,1801.5 702.4,1818.7 673.9,1788.2 181.4,1766.3 120.8,1822.9 93.8,692.9 105.0,693.0 102.0,645.0 105.1,423.2 109.5,142.6 889.7,150.0 1048.6,152.4 1149.6,153.9 1330.3,247.9 1387.8,249.0 1387.1,277.5 1567.0,371.2 1566.0,444.1 1564.3,497.1 1559.0,667.9 1554.7,992.5 1554.7,1265.7 1544.9,1735.8 1544.7,1758.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0072/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[823.0,1236.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1502729,46.7509683]}},{"type":"Feature","properties":{"resourceCoords":[105.0,693.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1526031,46.7506919]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p73","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.21"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0073/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0073","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"158.2,77.0 221.0,142.4 505.3,121.1 554.1,146.8 850.4,138.0 888.8,72.1 950.9,109.2 1237.3,126.2 1245.5,144.9 1298.5,175.1 1298.4,181.9 1311.8,200.6 1375.0,263.3 1423.0,311.1 1461.6,361.3 1467.9,369.1 1475.2,526.9 1473.8,526.9 1363.7,866.6 1392.9,836.7 1606.3,1157.7 1664.0,1215.0 1664.0,1253.2 1634.4,1281.7 1637.7,1486.6 1573.0,1877.7 1316.1,1892.2 953.9,1862.6 694.2,1894.3 122.2,1867.9 68.3,1721.2 69.1,1072.2 31.6,1033.2 70.1,1035.2 122.6,524.6 96.2,524.8 157.0,62.9 158.2,77.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0073/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[568.0,527.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.14543692642195,46.755777698423074]}},{"type":"Feature","properties":{"resourceCoords":[945.0,1372.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.14052377483377,46.75456598280987]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0008","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"870.7,155.2 1399.3,167.2 1546.4,158.0 1562.8,216.1 1602.6,757.0 1664.0,828.5 1664.0,1166.3 1644.3,1250.1 1616.4,1369.0 1568.0,1750.2 1520.4,1744.4 1519.2,1786.1 832.8,1784.8 134.9,1801.6 132.6,1498.9 133.4,1224.8 155.9,706.0 171.6,153.7 870.7,155.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[152.0,1240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.13220016535115,46.76839510897589]}},{"type":"Feature","properties":{"resourceCoords":[846.0,153.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.13320642197858,46.77068231196345]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p9 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.34"},{"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":"3392.0"},{"label":"split_canvas_h","value":"2736.0"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"438.2,682.7 594.6,590.5 832.6,664.4 827.5,472.2 796.9,492.0 770.4,423.9 780.4,244.3 803.3,221.9 839.2,275.7 843.6,195.9 773.0,106.2 158.5,92.1 119.1,623.0 119.3,645.2 226.5,681.0 438.2,682.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[119.0,623.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.0789388,46.8077438]}},{"type":"Feature","properties":{"resourceCoords":[119.0,98.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.0800219,46.8084067]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p9 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"confidence","value":"0.73"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3392.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3268.0"},{"label":"split_canvas_h","value":"2736.0"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1452.9,66.5 1618.5,9.2 1230.3,1.0 1179.7,1.0 1125.1,22.2 1119.0,79.8 1096.0,79.2 1021.8,37.0 867.3,48.7 875.2,660.2 1629.3,667.1 1624.7,543.6 1574.5,520.2 1613.8,445.4 1564.0,411.8 1636.5,287.5 1621.2,173.6 1453.0,112.0 1452.9,66.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[848.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.0950340948449,46.800358760185595]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.09337674851753,46.79934593529062]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,684.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.09462889348113,46.79840629611049]}},{"type":"Feature","properties":{"resourceCoords":[848.0,684.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-92.0962862398085,46.79941912100547]}},{"type":"Feature","properties":{"resourceCoords":[1006.0,644.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.0958925,46.7992782]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Duluth, Minnesota | 1955 | sanborn04287_012 p9 [3]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.88"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2736.0"},{"label":"split_canvas_w","value":"6660.0"},{"label":"split_canvas_h","value":"5336.0"}],"created":"2026-10-18T13:29:22Z","modified":"2026-10-18T13:29:22Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009","type":"ImageService3","width":1665,"height":2018},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"54.3,1785.5 158.4,1819.0 158.4,1793.0 852.0,1797.0 1533.8,1798.0 1542.7,1527.6 1538.3,1256.1 1509.0,684.0 1462.6,684.0 1461.0,696.3 1255.3,704.8 1193.3,798.6 1030.3,778.7 1008.7,710.8 119.7,735.5 69.8,886.4 114.8,1166.1 81.6,1728.5 54.3,1785.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd414m:g4144m:g4144dm:g04287195501:04287_01_1955-0009__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[852.0,1797.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1174837,46.778209]}},{"type":"Feature","properties":{"resourceCoords":[1546.0,722.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-92.1184152,46.780505]}}]}}]}