{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03735_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Gloucester, Massachusetts | 1917 | mapsnap generated fit (2026-10-24)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-24"},{"label":"run","value":"corpus-v2.2"},{"label":"pages","value":"96"},{"label":"placed","value":"52"},{"label":"unplaced","value":"44"},{"label":"fit sources","value":"georef 26, georef-snap 24, snap:0 3, georef-street 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"26 sheet(s) cut into 57 panels"},{"label":"unplaced pages","value":"p15__1 (tier 1, 42.61508,-70.66906 +/-100m); p23__2 (tier 1, 42.62428,-70.66975 +/-100m); p25__2 (tier 1, 42.61861,-70.66301 +/-100m); p28__2 (tier 1, 42.62209,-70.64831 +/-100m); p30__2 (tier 2, 42.61731,-70.64660 +/-195m); p32__1 (tier 1, 42.61272,-70.64853 +/-260m); p33__1 (tier 1, 42.60793,-70.65651 +/-202m); p34__1 (tier 1, 42.60452,-70.65778 +/-100m); p37__2 (tier 1, 42.60460,-70.65025 +/-112m); p43__1 (tier 2, 42.61172,-70.63846 +/-102m); p43__2 (tier 1, 42.60064,-70.63672 +/-120m); p43__3 (tier 1, 42.59977,-70.63976 +/-100m); p44__2 (tier 1, 42.63064,-70.68756 +/-136m); p45__1 (tier 3, 42.58746,-70.66262 +/-546m); p45__2 (tier 3, 42.58746,-70.66262 +/-546m); p46__1 (tier 4, 42.61256,-70.66377 +/-5909m); p46__2 (tier 4, 42.61256,-70.66377 +/-5909m); p46__3 (tier 4, 42.61256,-70.66377 +/-5909m); p47 (tier 1, 42.62311,-70.68390 +/-232m); p48__2 (tier 1, 42.62746,-70.67977 +/-221m); p49__2 (tier 1, 42.57664,-70.70993 +/-100m); p50__2 (tier 1, 42.58098,-70.71135 +/-100m); p53__1 (tier 1, 42.60725,-70.68058 +/-110m); p53__2 (tier 1, 42.60880,-70.67728 +/-230m); p53__3 (tier 1, 42.60656,-70.68117 +/-135m); p54 (tier 3, 42.62153,-70.65435 +/-546m); p55 (tier 1, 42.65448,-70.68060 +/-236m); p56__2 (tier 4, 42.61256,-70.66377 +/-5909m); p57__1 (tier 1, 42.62023,-70.67288 +/-260m); p57__2 (tier 4, 42.61256,-70.66377 +/-5909m); p58 (tier 1, 42.61438,-70.66846 +/-249m); p59__1 (tier 1, 42.61252,-70.66458 +/-248m); p59__2 (tier 1, 42.65602,-70.61962 +/-100m); p59__3 (tier 4, 42.61256,-70.66377 +/-5909m); p60 (tier 4, 42.61256,-70.66377 +/-5909m); p61__1 (tier 4, 42.61256,-70.66377 +/-5909m); p61__2 (tier 4, 42.61256,-70.66377 +/-5909m); p61__3 (tier 1, 42.65382,-70.61926 +/-189m); p62__2 (tier 1, 42.64119,-70.67957 +/-380m); p63__1 (tier 1, 42.62322,-70.62699 +/-260m); p63__2 (tier 1, 42.62291,-70.62908 +/-101m); p7 (tier 2, 42.61418,-70.65837 +/-156m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p1","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0001","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"141.8,129.2 288.8,103.3 362.1,65.7 419.2,91.6 561.0,174.0 579.5,176.8 623.5,170.8 647.8,163.5 832.8,104.8 906.5,83.2 1145.2,34.9 1593.1,49.5 1629.7,48.6 1583.5,363.2 1611.2,768.3 1554.7,892.9 1603.0,1660.2 1592.8,1741.2 1651.0,1742.0 1651.0,1790.8 1651.0,1819.2 1608.3,1819.2 1616.4,1862.3 1610.0,1857.6 1392.7,1929.4 714.5,1868.5 295.8,1930.2 65.0,1889.9 32.6,1509.0 101.2,1398.0 119.8,1114.7 64.9,129.1 141.8,129.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1642.0,1432.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6695855,42.6109343]}},{"type":"Feature","properties":{"resourceCoords":[908.0,1070.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6714002,42.6115717]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0010","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"214.5,1723.2 337.9,1675.5 513.6,1656.4 635.5,1676.4 915.1,1743.8 1280.5,1849.3 1324.3,1655.4 1342.9,1538.7 1324.5,1398.0 1250.1,1156.2 1323.5,1129.4 1346.3,1135.1 1550.8,1132.5 1564.0,1131.1 1435.1,427.1 1360.2,449.9 1246.6,446.9 1162.0,437.8 597.2,133.3 492.4,351.1 432.7,482.7 423.9,486.2 400.9,384.6 1.0,537.2 1.0,537.6 39.3,536.3 64.6,530.0 115.8,712.2 137.1,855.9 166.8,1013.5 179.6,1050.1 108.3,1057.5 172.5,1742.0 214.5,1723.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[522.0,925.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65888300353183,42.616506505323926]}},{"type":"Feature","properties":{"resourceCoords":[1236.0,1140.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65708504247566,42.61671009271758]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0011","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"518.2,1767.8 510.8,1845.2 501.9,1865.2 8.7,713.0 155.2,580.9 83.5,434.6 140.8,141.7 229.4,61.8 762.4,73.3 777.0,60.1 983.0,151.5 982.8,145.9 1215.8,119.0 1517.9,95.0 1520.1,194.0 1521.6,260.1 1522.8,790.6 1535.3,1130.0 1574.6,1581.2 1273.8,1582.8 1274.9,1692.2 1250.0,1830.8 1216.9,1903.8 1213.2,1916.4 518.2,1767.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1530.0,457.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65339275374993,42.61855354552347]}},{"type":"Feature","properties":{"resourceCoords":[1244.0,1888.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65626931094057,42.6169788797026]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.89"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0012","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1433.7,1515.8 1403.5,1631.3 1471.6,1722.2 1289.0,1861.8 594.9,1721.5 596.0,1705.2 131.2,1647.2 130.6,1639.1 101.9,1181.6 97.5,837.9 109.4,301.0 109.5,258.5 649.1,204.3 649.8,207.6 1115.1,91.9 1122.5,101.5 1186.4,190.2 1204.2,247.2 1193.7,346.1 1219.5,376.0 1247.2,364.3 1455.6,331.5 1529.4,294.1 1582.9,247.3 1610.5,1364.0 1433.7,1515.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[122.0,530.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65342305020306,42.618503083720114]}},{"type":"Feature","properties":{"resourceCoords":[122.0,159.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65283632381238,42.61900575129272]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0013__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p13 [1]","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.98"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6588.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0013__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0013","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1646.0,1759.0 1574.9,1744.8 1501.9,1299.3 1477.0,1298.0 1445.2,577.8 1368.3,573.5 1336.7,13.5 1227.4,14.3 1217.6,59.8 1006.4,108.0 1006.8,113.7 808.5,145.5 489.1,44.6 107.3,109.7 68.3,195.6 60.2,344.8 148.1,436.4 124.1,666.4 214.3,735.8 477.1,733.3 577.5,848.8 564.4,1117.3 457.6,1421.2 149.6,1426.5 162.8,1802.8 454.9,1878.3 678.5,1819.2 816.6,1856.1 893.1,1863.2 1041.8,1850.8 1118.2,1820.1 1172.8,1851.0 1306.4,1946.0 1356.6,1948.0 1371.3,1948.0 1393.8,1943.5 1583.3,1901.9 1646.0,1889.6 1646.0,1795.4 1646.0,1759.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0013__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[472.0,246.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6747551,42.6160848]}},{"type":"Feature","properties":{"resourceCoords":[1477.0,1298.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6720297,42.6143814]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0013__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p13 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"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":"2956.4"},{"label":"split_canvas_w","value":"1926.0"},{"label":"split_canvas_h","value":"2409.6"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0013__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0013","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"193.7,771.9 192.2,791.0 43.5,876.4 69.5,1020.5 105.2,1048.7 87.7,1074.3 106.2,1301.8 315.8,1248.3 324.4,1202.6 343.4,1202.0 335.4,1146.7 370.0,970.4 399.2,843.6 193.7,771.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0013__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,739.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.67385316513963,42.617433820515615]}},{"type":"Feature","properties":{"resourceCoords":[481.5,739.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.67267201915735,42.617502350767595]}},{"type":"Feature","properties":{"resourceCoords":[481.5,1341.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.67255546698246,42.61641540951561]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1341.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.67373661296475,42.61634687926363]}},{"type":"Feature","properties":{"resourceCoords":[324.7,1202.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6729678,42.6166436]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p14","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"22"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0014","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1570.5,1396.9 1554.6,1280.2 1508.4,1056.9 1400.6,629.3 1393.5,588.5 1354.5,477.1 1191.7,174.3 1163.2,127.0 562.0,264.9 126.5,77.8 59.2,251.2 1.0,417.5 1.0,476.1 89.4,486.0 55.2,1043.7 130.8,1057.0 77.9,1773.2 133.4,1782.8 378.2,1830.1 553.5,1818.9 724.4,1779.7 883.5,1734.6 1061.2,1693.7 1192.6,1683.3 1386.0,1690.3 1521.5,1700.7 1562.0,1542.0 1570.5,1396.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[311.0,157.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6723463,42.6173367]}},{"type":"Feature","properties":{"resourceCoords":[1166.0,1223.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.66971,42.6157906]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0015__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p15 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6588.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0015__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0015","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1562.0,1605.2 1527.2,1435.5 1556.1,1437.2 1493.7,1050.3 1528.9,832.5 1579.4,639.5 1588.9,580.4 1582.0,482.1 1529.0,338.5 1520.0,277.9 1534.5,167.2 1400.0,142.2 1207.2,114.5 1074.6,110.7 892.3,132.6 728.1,160.6 552.9,181.5 376.2,173.9 136.2,100.2 105.7,91.5 77.5,543.5 143.9,573.1 114.7,700.9 127.7,701.3 370.2,729.6 792.5,883.1 827.6,893.6 685.6,1179.1 585.7,1573.8 715.6,1805.3 758.7,1899.4 1209.2,1690.9 1431.5,1631.2 1562.0,1605.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0015__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[235.0,621.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.67124965962184,42.61355539965701]}},{"type":"Feature","properties":{"resourceCoords":[1026.0,477.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.66952925688624,42.614261845814575]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p16","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"18"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0016","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"186.9,1376.0 217.0,1159.8 262.8,967.9 270.9,909.2 261.9,812.1 206.4,671.2 196.1,611.4 208.1,501.6 261.8,347.6 282.4,204.4 1291.0,238.7 1327.7,220.4 1427.4,309.1 1412.4,333.6 1399.4,476.7 1406.1,917.6 1498.3,1369.9 1539.5,1583.2 1499.8,1590.5 1142.2,1631.8 886.6,1614.8 882.3,1681.4 256.4,1754.3 186.9,1376.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[221.0,1143.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6680848,42.6139795]}},{"type":"Feature","properties":{"resourceCoords":[1146.0,479.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6663977,42.6156426]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.99"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0017","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1538.1,1785.2 1550.6,1602.0 1538.5,1488.8 1488.8,1109.3 1388.5,772.4 1265.4,410.9 1174.8,78.6 1175.0,1.0 1107.3,1.0 1099.7,4.4 924.4,27.9 811.7,52.6 609.5,81.1 606.4,66.4 216.4,141.4 268.4,436.7 190.6,451.4 132.6,415.2 121.3,441.9 129.6,586.6 202.2,1025.7 361.8,1463.3 434.8,1670.0 470.9,1744.2 530.0,1733.6 663.2,1723.6 1049.6,1810.0 1050.0,1929.1 1481.0,1929.3 1481.0,1929.0 1526.8,1929.3 1538.1,1785.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0017/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[342.0,1477.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.66494191544132,42.61425843571659]}},{"type":"Feature","properties":{"resourceCoords":[700.0,559.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.66442937966386,42.615997864055814]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p18","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"14"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0018","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"435.6,1596.1 425.4,1637.2 466.2,1585.7 528.0,1634.7 846.0,1770.2 1207.2,1898.3 1262.2,1732.4 1535.9,907.1 1543.3,475.5 1646.0,491.9 1646.0,482.4 1546.4,378.3 1383.8,200.3 1322.9,132.7 1256.4,93.7 1160.9,88.5 736.6,167.8 652.9,217.6 481.4,341.2 2.8,677.7 1.0,762.2 1.0,809.7 113.9,869.8 168.8,963.2 228.0,1057.0 71.6,1367.0 442.7,1567.0 435.6,1596.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[228.0,1057.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.663048,42.6181207]}},{"type":"Feature","properties":{"resourceCoords":[896.0,1789.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6630574,42.6163372]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p19","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"},{"label":"confidence","value":"0.93"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0019","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1202.1,1849.1 836.3,1850.2 458.4,1860.1 458.5,1864.5 36.4,1815.8 54.1,1781.4 44.0,443.9 124.2,50.8 954.2,51.6 1519.1,136.8 1584.1,200.2 1609.9,1814.5 1464.3,1939.7 1460.0,1940.0 1460.0,1943.4 1454.7,1948.0 1442.5,1948.0 1445.6,1864.3 1407.0,1855.5 1202.1,1849.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1202.0,847.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6738752,42.6220964]}},{"type":"Feature","properties":{"resourceCoords":[456.0,1807.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6737882,42.6199215]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0002","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"322.3,193.4 235.8,299.8 86.8,1056.3 56.3,1132.2 112.6,1147.9 92.9,1222.7 51.5,1211.9 48.3,1255.7 182.4,1420.0 166.9,1532.2 445.0,1733.3 1035.5,1745.1 1471.1,1417.3 1470.8,1417.4 1538.7,1056.3 1489.5,1010.6 1451.8,992.1 1499.8,974.6 1283.3,1.0 1254.5,1.0 1299.0,167.3 1170.1,201.0 951.6,273.6 514.1,508.2 465.6,416.9 322.3,193.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1510.0,977.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.66636579695883,42.611343187202955]}},{"type":"Feature","properties":{"resourceCoords":[465.0,1066.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.66877497236274,42.61068580903882]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p20","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0020","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"279.7,1579.5 658.1,1866.4 1276.1,1877.3 1292.4,1930.2 1445.2,1894.7 1560.4,1523.0 1493.9,1477.4 1488.4,575.0 1591.9,368.6 1537.5,82.2 1537.3,81.2 1522.0,1.0 1451.0,1.0 1284.0,39.0 932.0,120.7 570.2,213.6 571.2,217.8 154.1,264.1 43.0,699.7 109.5,833.0 65.9,1052.8 112.0,1425.8 83.8,1481.9 247.2,1625.7 279.7,1579.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[440.0,1701.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6723463,42.6173367]}},{"type":"Feature","properties":{"resourceCoords":[1284.0,39.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6723235,42.6207134]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p21","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0021","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"288.6,1626.3 268.6,1399.5 210.9,962.8 208.6,921.5 182.9,806.5 56.2,487.4 202.8,433.0 269.7,50.9 344.9,89.4 840.1,90.2 1092.3,21.2 1104.2,15.2 1368.6,149.4 1390.0,196.0 1592.5,663.3 1570.9,677.3 1564.4,1929.5 1485.7,1930.0 1435.3,1884.3 1338.2,1792.4 1300.8,1809.5 290.9,1744.0 288.6,1626.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1390.0,196.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6673478,42.6189608]}},{"type":"Feature","properties":{"resourceCoords":[482.0,307.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.669373,42.6182236]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p22","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0022","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"744.6,345.6 1242.2,349.1 1407.7,360.6 1581.6,421.3 1603.6,423.9 1540.3,798.6 1533.8,886.1 1646.0,954.1 1646.0,1177.0 1590.6,1267.0 1536.1,1362.5 1191.7,1369.7 1189.2,1788.0 1160.4,1795.2 1109.3,1808.1 933.4,1799.7 818.5,1803.8 615.4,1795.6 615.0,1780.7 219.7,1784.4 225.7,828.4 247.3,814.4 45.0,346.0 744.6,345.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[379.0,346.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6665712,42.6191622]}},{"type":"Feature","properties":{"resourceCoords":[45.0,346.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6673478,42.6189608]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0023__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p23 [1]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"17"},{"label":"confidence","value":"0.98"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6588.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0023__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0023","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1475.0,58.7 940.9,40.6 668.9,133.2 584.5,102.7 504.6,367.9 377.1,544.5 370.8,543.2 369.5,547.4 308.2,530.7 80.6,485.1 29.8,625.7 33.8,1605.0 86.1,1878.3 886.8,1929.0 1241.2,1850.3 1493.5,1878.0 1605.1,1767.2 1627.4,1441.4 1641.8,1441.5 1505.1,1175.7 1513.1,1175.6 1494.5,1.0 1478.4,1.0 1475.0,58.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0023__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1487.0,453.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6670122,42.6219753]}},{"type":"Feature","properties":{"resourceCoords":[517.0,1546.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6703404,42.6229511]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p24","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0024","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1395.2,1902.0 1389.4,1890.1 1526.0,1629.0 1572.5,1608.3 1580.0,914.4 1589.0,420.9 1602.2,256.9 1611.1,232.5 1037.1,1.0 935.3,1.0 898.1,103.0 719.7,139.9 446.9,48.2 89.7,59.0 63.7,469.3 79.5,469.4 93.9,1629.0 86.0,1629.0 219.9,1891.7 1395.2,1902.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[86.0,1629.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6686633,42.6215017]}},{"type":"Feature","properties":{"resourceCoords":[1526.0,1629.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6674358,42.6190278]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0025__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p25 [1]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6604.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0025__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0025","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"611.8,1948.0 759.5,1948.0 759.9,1916.3 1344.8,1872.2 1555.8,1853.8 1554.3,1523.8 1549.7,1378.2 1550.7,1005.1 1544.9,260.6 1577.8,260.2 1534.6,53.4 1230.0,101.8 992.1,28.6 610.5,39.3 490.5,125.8 471.1,436.9 91.3,823.3 1.0,842.2 1.0,867.0 40.5,930.7 149.3,1554.4 305.6,1521.3 326.0,1512.0 467.4,1869.0 507.7,1948.0 611.8,1948.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0025__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1550.0,844.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6604034,42.6204917]}},{"type":"Feature","properties":{"resourceCoords":[326.0,1512.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6636599,42.6197673]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p26","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.57"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0026","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1647.7,509.9 1593.4,520.5 1532.2,130.3 1456.4,85.5 1271.3,129.1 857.6,31.2 153.8,49.4 144.4,1.0 112.2,1.0 108.3,724.1 102.5,1087.0 105.1,1228.6 102.2,1549.5 197.3,1550.9 590.2,1701.6 666.9,1754.7 702.2,1821.0 718.4,1908.2 1336.0,1819.0 1407.4,1777.1 1480.3,1726.0 1647.7,509.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[466.0,559.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65952204295475,42.620380918813595]}},{"type":"Feature","properties":{"resourceCoords":[100.0,559.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.66042310721151,42.62051033740177]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0027","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"101.1,1759.8 34.8,1282.3 38.1,1282.0 41.1,736.7 65.5,739.3 165.7,750.2 181.3,442.2 184.8,203.5 179.2,203.0 298.6,7.2 330.3,53.1 1021.4,65.2 1094.2,144.1 1194.2,75.0 1182.6,138.4 1480.7,209.4 1503.2,562.9 1587.1,671.1 1597.7,1595.6 1650.0,1680.1 1650.0,1729.0 1530.0,1938.7 1476.0,1939.0 1426.5,1948.0 1396.6,1928.4 1222.8,1847.7 1060.1,1807.7 858.0,1785.7 620.2,1739.5 406.2,1653.0 336.8,1641.2 262.9,1663.8 104.2,1758.0 101.1,1759.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[331.0,767.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65255907863937,42.61927884249058]}},{"type":"Feature","properties":{"resourceCoords":[950.0,1800.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.64965785062448,42.619141574260986]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0028__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p28 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6604.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0028__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0028","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"496.6,1930.8 537.5,1906.0 841.4,1897.8 844.0,1872.0 865.1,1722.0 1356.0,1948.0 1476.0,1948.0 1476.0,1940.0 1482.0,1939.0 1483.0,1931.0 1634.0,1932.0 1636.0,1948.0 1650.0,1948.0 1650.0,1921.1 1487.8,1828.2 1354.2,1435.0 1502.6,1210.5 1539.5,1130.7 1567.0,1047.2 1552.1,1046.7 1605.0,886.8 1550.9,889.1 1270.5,788.2 1051.0,787.8 1050.5,785.0 1050.0,785.0 1050.0,781.6 951.1,173.6 623.8,141.2 520.6,62.5 100.3,110.7 51.0,275.8 71.8,830.2 136.4,940.5 97.0,1028.7 170.9,1045.4 191.1,1127.7 71.5,1359.0 76.5,1475.2 222.7,1548.6 178.6,1756.7 520.0,1884.9 535.5,1906.0 497.5,1929.2 496.6,1930.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0028__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[823.0,1028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.64657387411316,42.620413907808164]}},{"type":"Feature","properties":{"resourceCoords":[432.0,1316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.64761628750533,42.62084871432588]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0029__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p29 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.92"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6604.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0029__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0029","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"561.4,1537.5 757.7,1523.4 868.7,1507.7 914.1,1573.1 1126.6,1750.2 1263.1,1893.8 1286.2,1938.9 1375.1,1919.5 1462.8,1871.1 1479.2,1827.4 1425.8,1759.1 1400.3,1640.7 1412.0,1470.8 1510.8,1468.8 1390.6,1203.8 1241.4,1202.5 983.9,1200.2 822.8,1198.7 828.3,901.1 834.8,546.8 928.6,548.5 997.2,549.7 1250.6,554.2 1257.4,70.8 1110.5,112.7 1081.8,122.0 1027.0,139.8 972.6,161.7 809.3,257.2 685.2,366.6 553.5,518.2 382.1,685.0 191.3,809.9 142.7,859.5 119.3,932.1 106.2,1114.0 105.3,1129.5 95.8,1237.7 72.2,1292.1 1.0,1358.6 1.0,1399.0 28.4,1407.8 206.2,1518.6 286.0,1538.3 473.4,1537.3 561.4,1537.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0029__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[254.0,1179.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65053955243835,42.617831126815986]}},{"type":"Feature","properties":{"resourceCoords":[1421.0,1494.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.64768458327887,42.61727087242833]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0029__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p29 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.25"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"3291.2"},{"label":"split_canvas_y","value":"2187.2"},{"label":"split_canvas_w","value":"3312.8"},{"label":"split_canvas_h","value":"2637.2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0029__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0029","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1494.9,760.8 1650.0,807.6 1650.0,716.5 1650.0,687.4 1581.0,712.0 1494.9,760.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0029__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[822.8,546.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.64952737808848,42.619488836102796]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,546.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.64870960446758,42.61992839357396]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,1206.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.64823738843673,42.619445905206746]}},{"type":"Feature","properties":{"resourceCoords":[822.8,1206.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.64905516205762,42.61900634773559]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p3","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.03"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0003","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"448.4,127.5 1378.8,179.0 1609.9,505.4 1581.9,1854.6 487.4,1914.5 150.7,1764.5 169.6,1606.1 47.8,1442.6 86.7,1291.4 42.4,1058.0 136.3,731.3 113.8,415.6 15.7,406.5 448.4,127.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[884.0,931.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6644061,42.609394]}},{"type":"Feature","properties":{"resourceCoords":[406.0,154.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6662504,42.6104844]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0030__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p30 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6604.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0030__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0030","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"83.9,1331.4 121.4,1446.5 181.4,1508.8 169.7,1554.0 87.5,1611.0 11.2,1636.1 631.4,1926.8 1065.6,1458.3 1084.6,1471.8 1126.1,1520.9 1242.2,1455.3 1300.2,1431.2 1485.9,1047.0 1234.5,1067.5 1166.0,984.0 934.1,999.7 926.6,624.0 1007.1,600.9 995.1,481.6 1078.6,413.0 1411.8,357.0 1449.0,127.4 1251.5,34.2 898.1,39.5 882.5,14.9 716.0,48.8 723.0,62.0 636.2,79.8 547.9,87.5 277.1,70.2 1.0,383.1 1.0,900.9 29.4,898.2 176.1,1149.2 78.2,1161.4 83.9,1331.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0030__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[107.0,1033.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.64760508606854,42.6175373512184]}},{"type":"Feature","properties":{"resourceCoords":[904.0,1317.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.64573395840492,42.61688540347804]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p31","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0031","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1307.3,107.0 1375.0,203.9 1425.5,277.2 1550.2,432.7 1627.0,516.1 1599.1,591.4 1575.0,869.5 1534.7,1065.3 1510.8,1110.2 1518.6,1117.5 1570.1,1891.7 1523.2,1879.5 1466.2,1861.1 1331.4,1822.8 1143.4,1773.6 968.7,1754.1 877.5,1741.9 803.6,1735.7 563.2,1792.7 506.4,1811.6 522.2,1820.6 139.5,1862.4 72.2,1724.4 109.8,1219.8 36.9,873.9 51.9,522.9 198.4,17.2 193.5,10.0 1307.3,107.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0031/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.65228589889699,42.61536551815798]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.65002934690871,42.617801351451966]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.64614934874226,42.61582715249898]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.64840590073055,42.61339131920499]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0032__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p32 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.85"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"5114.8"},{"label":"split_canvas_y","value":"2504.0"},{"label":"split_canvas_w","value":"1489.2"},{"label":"split_canvas_h","value":"3754.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0032__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0032","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1496.8,1462.6 1554.1,1364.2 1555.5,1078.7 1561.7,933.8 1557.9,749.7 1562.4,696.2 1324.2,745.9 1284.5,758.1 1284.3,778.0 1344.4,1060.0 1308.8,1348.3 1361.9,1406.8 1467.0,1446.5 1496.8,1462.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0032__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1559.2,1481.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.64610936295652,42.61401726883066]}},{"type":"Feature","properties":{"resourceCoords":[325.5,980.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.64879419719927,42.61262506354928]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0033__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p33 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6604.0"},{"label":"split_canvas_h","value":"3756.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0033__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0033","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1495.5,909.4 1611.9,798.8 1520.0,647.7 1468.1,111.8 257.1,27.3 152.1,129.5 85.2,472.1 213.6,691.3 377.6,719.2 582.4,717.7 792.1,789.7 978.0,821.4 981.2,845.2 1223.8,843.1 1221.2,862.7 1495.5,909.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0033__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1220.0,422.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65823233737822,42.60676735709666]}},{"type":"Feature","properties":{"resourceCoords":[944.0,422.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65881366875402,42.60650997691035]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0034__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p34 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6604.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0034__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0034","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"357.1,56.8 370.3,79.5 95.9,416.2 83.0,651.6 174.8,829.0 80.3,1084.2 88.6,1384.6 422.9,1449.1 976.6,1438.6 1115.8,1566.7 1019.8,1737.2 1543.5,1754.0 1608.0,1621.1 1517.9,1576.9 1514.4,697.5 1585.5,323.8 1631.6,280.4 1358.9,232.5 1361.7,213.0 1120.2,213.9 1117.2,190.2 932.3,157.7 724.0,85.0 520.2,85.4 357.1,56.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0034__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1220.0,1104.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6568455605088,42.60460048155248]}},{"type":"Feature","properties":{"resourceCoords":[933.0,477.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65825626136764,42.605303033315344]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p35","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.26"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0035","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1639.2,1157.6 1447.3,1941.2 1447.6,1892.5 930.3,1912.9 413.6,1824.5 428.5,1948.0 378.2,1948.0 41.5,1120.8 58.2,1109.2 82.1,1022.5 117.0,1022.0 137.4,120.2 639.1,123.0 801.6,46.1 1257.1,33.1 1511.4,112.2 1569.2,290.2 1356.0,1140.0 1639.2,1157.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0035/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.65776109489765,42.59813271762561]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.65778255681283,42.601017943899365]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.65318786922748,42.60103672503708]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.6531664073123,42.59815149876333]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p36","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0036","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"100.3,340.9 130.6,584.0 126.3,787.7 70.0,830.5 61.2,1734.8 1.0,1761.0 1.0,1781.7 801.6,1904.3 792.3,1628.9 1562.5,1742.3 1590.3,1739.8 1618.4,1466.2 1559.8,733.6 1390.0,14.7 1348.2,64.2 1313.7,179.3 813.8,307.4 859.1,212.8 515.8,53.9 100.3,340.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[857.0,211.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65458450847221,42.603538362922016]}},{"type":"Feature","properties":{"resourceCoords":[923.0,1645.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65473878502361,42.60095847551788]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0037__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p37 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6604.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0037__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0037","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"432.6,1845.2 409.6,1948.0 415.8,1948.0 856.6,1687.2 857.6,1567.8 883.7,1509.0 882.0,1505.9 1049.0,1137.1 1050.1,1134.5 1050.1,1134.5 1052.0,1134.5 1057.0,1134.5 1058.0,1134.5 1496.6,1033.3 1501.4,943.5 1602.7,895.8 1574.5,211.2 1580.3,208.7 1153.0,100.2 398.1,47.2 399.6,43.4 108.3,28.1 174.3,127.9 97.5,237.9 72.2,479.7 66.8,1609.3 9.8,1637.8 76.7,1770.1 61.3,1789.0 432.6,1845.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0037__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[367.0,698.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65370030632194,42.605513604117064]}},{"type":"Feature","properties":{"resourceCoords":[417.0,1844.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65461450447211,42.60354717888244]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p38","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.91"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0038","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"32.9,1647.3 130.5,1807.6 250.8,1808.8 307.3,1879.7 1160.4,1924.8 1418.9,1883.1 1445.9,1938.6 1610.3,1772.6 1624.8,1750.0 1650.0,1627.7 1650.0,1606.3 1650.0,1585.2 1498.1,1549.3 1501.4,1466.6 1535.3,1065.8 1545.2,915.4 1553.3,848.6 1618.6,551.3 1549.8,573.0 1290.3,1.0 1253.2,1.0 1235.6,38.9 163.9,30.4 13.2,162.5 37.4,453.6 33.4,452.6 82.8,1208.8 32.9,1647.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0038/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.6540566,42.6069371]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.6520798,42.6095463]}},{"type":"Feature","properties":{"resourceCoords":[1651.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.6478949,42.60782879999999]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.6498717,42.6052196]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p39","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.87"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0039/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0039","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"482.0,1757.5 152.8,1773.0 80.5,1727.4 52.0,701.3 89.0,472.7 169.2,364.0 152.8,186.6 646.8,119.5 685.3,49.7 983.8,37.4 1512.7,133.0 1570.2,247.8 1630.2,232.2 1567.4,714.0 1538.5,709.9 1508.5,1282.6 1526.6,1283.1 1493.0,1672.2 1474.5,1666.9 1190.0,1554.0 1200.5,1625.8 589.8,1791.2 583.9,1827.0 482.0,1757.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0039/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1190.0,1554.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6509349,42.6090093]}},{"type":"Feature","properties":{"resourceCoords":[1197.0,435.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.649988,42.6108985]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p4","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"20"},{"label":"confidence","value":"0.60"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0004","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"281.8,1813.3 361.4,1432.0 310.2,1382.5 270.6,1362.1 321.9,1344.5 112.2,303.4 781.7,213.9 785.1,142.4 1059.3,156.1 1442.0,105.3 1484.3,96.8 1512.0,180.0 1543.6,250.8 1564.0,612.7 1626.2,616.7 1528.1,986.6 1397.7,940.6 1302.0,1304.7 1305.0,1304.6 1413.7,1816.5 281.8,1813.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1512.0,180.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6645261,42.6138186]}},{"type":"Feature","properties":{"resourceCoords":[-107.0,1151.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6674689,42.6114492]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p40","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.88"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0040","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"98.6,818.5 105.0,422.4 104.5,273.9 107.0,226.6 485.7,171.8 482.1,154.4 1035.1,55.0 1037.7,83.5 1511.2,35.9 1630.6,262.8 1520.1,685.2 1623.4,1301.5 1607.0,1881.8 722.5,1923.1 526.3,1796.7 452.2,1871.3 76.9,1914.0 42.0,1752.7 111.6,1348.1 75.9,1286.1 226.3,1111.9 239.0,1088.7 255.6,966.8 252.7,925.1 101.0,900.0 98.6,818.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0040/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1098.0,758.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6478755,42.6096166]}},{"type":"Feature","properties":{"resourceCoords":[101.0,900.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6489362,42.6079394]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0041__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p41 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.79"},{"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":"6604.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0041__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0041","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"123.2,975.7 107.2,966.1 104.0,954.1 37.5,986.2 66.2,986.0 34.9,1635.5 63.4,1837.9 112.0,1891.3 296.9,1924.6 1430.9,1900.1 1529.9,1923.5 1589.4,1860.7 1621.0,1748.6 1565.5,1787.6 1542.7,1801.7 1540.8,1537.0 1379.9,1537.0 1339.7,1537.0 1209.1,1537.0 1168.9,1537.0 1142.8,1537.0 1150.1,1514.4 1171.0,1449.6 1277.3,1120.5 1434.8,1120.5 1525.7,1120.5 1537.6,1120.5 1534.8,753.3 1571.8,733.9 1622.7,94.6 776.0,91.0 726.1,117.2 650.9,103.8 511.6,266.4 480.4,270.6 415.7,287.6 401.9,258.4 394.4,249.5 123.8,421.1 155.3,447.5 135.0,460.4 108.9,474.6 92.5,484.4 108.9,494.3 126.2,970.8 123.2,975.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0041__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[405.0,299.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.64528561593866,42.616433654929175]}},{"type":"Feature","properties":{"resourceCoords":[842.0,1532.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6422325646664,42.61230951785541]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0041__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p41 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.63"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"4571.2"},{"label":"split_canvas_y","value":"4482.0"},{"label":"split_canvas_w","value":"2032.8"},{"label":"split_canvas_h","value":"1666.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0041__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0041","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1239.2,1418.7 1265.9,1426.2 1359.7,1442.3 1432.7,1459.7 1577.5,1488.4 1621.8,1527.2 1650.0,1536.0 1650.0,1530.1 1384.3,1120.5 1364.7,1120.5 1295.2,1253.9 1282.7,1287.4 1239.2,1418.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0041__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1598.1,1488.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.64626761333965,42.61409895994643]}},{"type":"Feature","properties":{"resourceCoords":[1233.7,1413.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.64774673662887,42.61481812802075]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p42","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"15"},{"label":"confidence","value":"0.79"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0042","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"21.2,1676.1 179.3,1654.9 216.2,1914.9 229.5,1903.9 236.7,1898.0 247.5,1888.0 286.2,1852.3 287.9,1840.4 600.8,1852.0 741.0,1907.7 934.5,1923.7 1541.5,1800.8 1614.8,654.4 1580.4,541.7 1580.2,247.2 1552.8,153.3 1429.7,154.0 1353.7,211.8 1204.7,208.0 1057.6,126.1 896.9,144.4 626.3,81.8 283.1,88.1 252.5,120.9 162.8,129.8 104.6,221.6 69.8,226.1 104.0,861.3 85.8,874.3 70.2,885.3 121.3,1245.9 109.7,1247.5 20.3,1259.4 1.0,1262.0 1.0,1678.8 21.2,1676.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1014.0,500.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6349003,42.6169414]}},{"type":"Feature","properties":{"resourceCoords":[939.0,1879.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6351,42.6119448]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0044__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p44 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.11"},{"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":"6588.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0044__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0044","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"541.6,43.1 539.0,65.7 153.5,174.1 149.2,166.0 111.8,150.8 77.7,488.6 91.6,1069.1 48.8,1828.6 81.9,1902.8 399.1,1920.1 449.1,1884.1 501.0,1890.4 524.8,1461.8 595.3,1372.1 630.6,1341.3 671.7,1349.8 821.7,1154.0 1093.3,1113.2 1153.9,1134.5 1462.7,1105.3 1471.5,1032.7 1521.5,996.6 1591.5,678.9 1598.0,567.5 1534.3,194.9 1548.9,73.9 1537.4,111.1 1286.6,66.8 1032.2,81.5 816.0,41.4 541.6,43.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0044__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[769.0,797.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6515099,42.596107]}},{"type":"Feature","properties":{"resourceCoords":[123.0,1269.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6545862,42.5939911]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0048__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p48 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.02"},{"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":"4896.4"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0048__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0048","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"49.2,1002.0 114.6,1400.7 102.5,1646.8 159.6,1728.6 178.0,1822.4 231.9,1848.8 233.9,1884.7 600.7,1889.8 660.1,1785.0 660.7,1565.8 630.4,1551.1 623.0,1365.1 664.3,1343.1 663.7,1218.8 693.5,1168.0 710.4,1176.8 746.8,1070.0 911.8,1037.7 939.6,951.0 919.0,706.9 1041.5,628.2 1044.5,617.9 1047.0,609.1 1189.7,63.1 1132.6,37.0 827.4,77.4 508.6,53.1 270.7,70.0 269.5,61.8 203.3,110.3 145.1,1.0 125.2,1.0 162.4,129.9 85.0,167.7 49.2,1002.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0048__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[598.0,411.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6778214,42.6336473]}},{"type":"Feature","properties":{"resourceCoords":[875.1,548.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.676313,42.633017]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0049__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p49 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"},{"label":"confidence","value":"0.96"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6608.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0049__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0049","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"174.9,1913.9 426.1,1880.6 426.6,1869.3 739.5,1854.8 734.5,1845.2 1228.8,1849.4 1576.0,1857.0 1578.7,1654.4 1574.7,1103.1 1558.6,1079.0 1602.6,474.4 1594.7,483.4 1526.5,411.6 1158.5,414.1 1157.8,410.5 1152.0,410.5 1152.0,376.7 1097.5,62.5 1008.2,28.1 369.2,82.1 125.3,44.5 54.9,164.2 37.0,1681.1 64.0,1864.4 175.5,1905.6 174.9,1913.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0049__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[441.0,1252.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.714943,42.5771501]}},{"type":"Feature","properties":{"resourceCoords":[1576.0,1857.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.7121591,42.5759853]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0005","type":"ImageService3","width":1653,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"138.3,1191.5 135.7,1192.2 151.4,839.5 280.1,855.8 296.9,497.4 239.1,506.0 148.8,178.3 105.9,119.7 163.8,104.5 295.2,83.8 685.9,138.6 695.8,256.8 1169.2,218.8 1168.9,74.9 1514.3,54.4 1545.2,432.7 1562.8,614.0 1299.3,733.4 1217.8,758.2 1238.5,788.1 1412.7,1088.2 1484.4,1234.1 1584.8,1374.4 1579.5,1375.5 1319.3,1940.0 1312.5,1914.3 575.9,1886.8 585.1,1923.9 260.5,1655.9 339.1,1639.2 138.3,1191.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[958.0,862.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.66229101708761,42.61259653051353]}},{"type":"Feature","properties":{"resourceCoords":[1180.0,395.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.66183503062214,42.613472023933]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0050__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p50 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.97"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6608.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0050__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0050","type":"ImageService3","width":1652,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1607.7,364.9 1595.6,77.4 1528.3,42.0 1315.5,105.8 1360.8,149.2 1268.4,361.6 1268.6,383.9 1268.8,413.0 1268.8,413.0 1234.2,440.2 975.4,431.1 872.6,130.5 701.0,53.0 361.0,53.2 296.1,121.2 141.1,132.0 50.9,392.7 90.2,502.6 38.9,851.1 39.9,1227.9 94.4,1352.3 50.3,1693.2 177.2,1807.8 783.9,1854.8 808.1,1838.8 1361.7,1837.4 1565.0,1841.0 1564.4,1491.5 1580.8,1215.6 1572.8,1119.8 1543.5,912.4 1541.7,828.1 1596.3,802.9 1607.7,364.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0050__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1565.0,1841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.7121591,42.5759853]}},{"type":"Feature","properties":{"resourceCoords":[782.0,1841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.7121158,42.5774147]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p51","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0051/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0051","type":"ImageService3","width":1644,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"669.1,1915.3 114.9,1843.1 66.3,1717.8 120.5,1305.9 40.0,637.1 75.8,137.2 330.2,102.3 330.6,91.0 647.5,74.8 642.4,65.2 1143.3,67.3 1495.0,73.6 1499.2,490.8 1496.6,968.1 1506.5,1160.8 1504.2,1278.5 1503.8,1653.1 1520.0,1786.4 1514.9,1844.0 1538.0,1833.0 1577.2,1913.8 669.1,1915.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0051/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[734.0,524.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.7140627,42.5752136]}},{"type":"Feature","properties":{"resourceCoords":[1498.0,524.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.7121863,42.5751705]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p52","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0052/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0052","type":"ImageService3","width":1655,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"155.0,1838.3 131.5,1849.2 137.1,1791.1 121.8,1656.3 125.0,1278.0 128.3,1159.2 119.8,964.4 126.0,482.4 125.0,61.0 481.3,59.9 762.5,76.2 860.1,68.0 1071.5,37.9 1157.3,35.9 1183.2,91.5 1538.8,106.5 1581.0,293.8 1539.8,467.9 1603.3,602.0 1503.0,1779.3 1059.1,1797.4 925.9,1898.4 549.9,1922.4 193.9,1920.2 155.0,1838.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0052/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[125.0,1278.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.712229,42.5738056]}},{"type":"Feature","properties":{"resourceCoords":[125.0,61.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.7121591,42.5759853]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0056__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p56 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.94"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6588.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0056__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0056","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"288.9,67.2 176.8,117.0 95.7,69.7 34.0,285.3 75.0,972.2 164.2,1228.8 220.9,1878.0 1359.8,1906.3 1531.2,1861.2 1590.5,1463.0 1546.6,974.8 1399.5,810.2 1414.8,751.0 1101.6,615.3 998.9,144.0 820.5,55.0 375.0,76.8 348.8,125.5 288.9,67.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0056__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[330.0,607.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6775176641355,42.654828691102246]}},{"type":"Feature","properties":{"resourceCoords":[287.0,233.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.67694328702983,42.65534705564639]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p6","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"confidence","value":"0.02"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0006","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"517.3,733.7 522.0,734.7 492.2,584.0 487.7,439.3 456.8,131.9 451.0,100.0 526.2,109.9 783.8,110.0 959.1,109.8 1136.0,99.2 1290.6,55.6 1258.8,113.4 1352.0,452.1 1473.8,519.3 1486.5,647.3 1597.7,761.5 1611.2,942.9 1497.5,1190.4 1487.1,1525.0 1194.9,1863.3 511.6,1895.3 265.5,1820.3 48.4,1390.5 98.6,1095.8 517.3,733.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[489.0,484.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.661068,42.6121732]}},{"type":"Feature","properties":{"resourceCoords":[451.0,100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6616727,42.6128207]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0062__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p62 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.45"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3094.4"},{"label":"split_canvas_w","value":"6588.0"},{"label":"split_canvas_h","value":"4701.6"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0062__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0062","type":"ImageService3","width":1647,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"46.8,1658.3 74.9,1751.5 225.6,1732.8 222.1,1754.7 89.3,1800.6 131.2,1883.1 585.8,1889.6 974.3,1947.9 1126.6,1900.4 1426.7,1886.5 1484.2,1792.2 1554.8,1751.2 1560.7,1369.6 1526.0,1024.7 1120.6,986.9 917.8,843.7 543.5,790.6 358.8,794.0 80.2,850.8 97.2,1368.3 63.5,1661.7 46.8,1658.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0062__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,773.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.68496662551061,42.63426878825952]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,773.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.68579919874212,42.64029516622716]}},{"type":"Feature","properties":{"resourceCoords":[1647.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.67999096852908,42.6407355815635]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.67915839529759,42.634709203595854]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.83"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0008","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"250.8,1659.6 325.6,1586.1 1112.3,1874.2 1414.0,1893.0 1599.1,1365.0 1567.2,241.6 1593.3,218.8 897.0,125.8 897.1,109.5 433.2,82.7 432.1,74.7 130.4,89.0 136.1,198.8 117.0,338.9 86.8,413.4 80.5,439.1 13.1,631.5 1.0,649.4 1.0,728.9 251.9,741.7 389.9,772.5 493.0,829.8 659.6,937.0 436.0,1243.3 277.4,1482.2 217.1,1589.5 175.0,1760.6 177.4,1892.5 181.5,1948.0 202.0,1948.0 250.8,1659.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[98.0,407.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65631425453627,42.61698472307649]}},{"type":"Feature","properties":{"resourceCoords":[433.0,806.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.65641312595537,42.6160494056671]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Gloucester, Massachusetts | 1917 | sanborn03735_006 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.98"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-24T15:30:27Z","modified":"2026-10-24T15:30:27Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0009","type":"ImageService3","width":1651,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1495.2,1350.0 1420.0,1365.0 1321.9,1542.6 886.5,1772.0 715.5,1833.9 516.8,1860.3 319.0,1875.0 365.6,1697.4 468.1,1328.9 134.5,1227.9 196.0,1054.1 214.9,941.4 269.4,561.0 263.4,208.2 437.8,194.8 1347.6,125.3 1372.7,118.6 1426.5,299.7 1449.7,442.8 1481.7,599.6 1494.9,635.9 1424.0,644.3 1497.8,1326.3 1488.9,1330.5 1496.2,1349.8 1495.2,1350.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764gm:g037351917:03735_1917-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[245.0,693.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.66222400651998,42.615006690872754]}},{"type":"Feature","properties":{"resourceCoords":[1479.0,601.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.6595765919286,42.616084249298524]}}]}}]}