{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn01161_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Norwich, Connecticut | 1885 | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"},{"label":"pages","value":"20"},{"label":"placed","value":"14"},{"label":"unplaced","value":"6"},{"label":"fit sources","value":"georef-snap 7, georef 5, snap:0 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 14 panels"},{"label":"unplaced pages","value":"p10__3 (tier 1, 41.53668,-72.05333 +/-100m); p11__2 (tier 1, 41.52464,-72.07814 +/-101m); p12__1 (tier 1, 41.53538,-72.09105 +/-128m); p12__2 (tier 1, 41.52865,-72.06084 +/-100m); p2__1 (tier 1, 41.51991,-72.08017 +/-211m); p2__2 (tier 3, 41.51984,-72.08052 +/-554m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0010__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p10 [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":"6452.0"},{"label":"split_canvas_h","value":"4321.6"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0010__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"36.2,161.4 74.9,306.0 63.4,305.9 79.0,649.0 80.8,767.2 106.5,765.1 89.6,1018.3 254.5,1032.7 476.8,1000.2 880.7,932.2 970.7,927.9 1064.1,914.2 1542.7,669.0 1516.4,170.9 1402.1,73.0 837.3,90.0 531.9,38.2 424.4,78.3 387.9,31.9 101.6,57.9 36.2,161.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0010__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1163.0,717.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.05320220791593,41.5374563319216]}},{"type":"Feature","properties":{"resourceCoords":[445.0,717.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.05393919789292,41.53622106710164]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0010__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p10 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.41"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3588.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4064.0"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0010__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1548.7,1431.1 1480.0,1321.4 1500.6,1146.0 1427.6,1087.7 1435.0,974.9 709.1,961.3 262.7,1116.3 51.7,1322.3 83.7,1823.0 216.2,1910.6 404.2,1859.8 442.1,1789.5 391.5,1749.1 454.0,1671.1 372.0,1623.9 485.9,1504.8 1039.2,1480.8 1186.4,1607.6 1158.8,1722.6 1218.6,1843.5 1312.9,1909.7 1488.7,1885.7 1559.8,1704.9 1548.7,1431.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0010__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,897.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.07013256301575,41.525759291579355]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,897.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.06697679269512,41.52766211652532]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.06538548856884,41.526162002726544]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.06854125888945,41.52425917778058]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0011__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p11 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.54"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0011__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"66.0,73.1 54.8,1712.9 255.1,1776.1 263.2,1848.7 414.4,1872.0 1536.7,1851.0 1548.5,872.7 1443.7,796.5 1150.0,779.4 1154.4,845.6 1047.6,839.4 939.8,567.2 982.9,112.2 937.9,35.4 66.0,73.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0011__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[812.0,654.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0833965,41.5108211]}},{"type":"Feature","properties":{"resourceCoords":[182.0,654.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0841695,41.5098324]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0012__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p12 [3]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.66"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2700.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4952.0"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0012__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1560.2,1552.4 1476.4,1321.0 1478.7,942.3 1143.9,753.5 862.0,803.5 764.6,875.2 366.9,890.4 153.2,1022.1 32.8,1467.7 41.0,1710.3 147.7,1845.0 265.1,1872.8 522.4,1773.3 978.8,1910.6 1520.6,1842.0 1560.2,1552.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0012__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[871.0,1134.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.06277039209637,41.528172028121816]}},{"type":"Feature","properties":{"resourceCoords":[1384.0,1000.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.06158246733342,41.52864446141362]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0013__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p13 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"confidence","value":"0.88"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4086.4"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3565.6"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0013__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1322.0,1047.5 1152.8,1048.5 122.6,1077.6 116.2,1256.4 63.2,1280.5 135.1,1455.5 23.9,1562.2 68.2,1869.7 167.0,1912.0 513.0,1912.0 1502.7,1911.2 1535.8,1872.8 1505.2,1512.3 1511.0,1512.2 1509.9,1046.3 1322.0,1047.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0013__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[402.0,1512.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0564678,41.5318083]}},{"type":"Feature","properties":{"resourceCoords":[1511.0,1512.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0553282,41.533679]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0013__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p13 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"confidence","value":"0.82"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4136.0"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0013__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"194.0,202.0 194.4,683.4 188.4,683.4 217.4,1032.3 255.4,1014.1 539.0,984.4 1139.5,926.1 1351.8,943.3 1367.8,677.6 1341.0,680.0 1338.3,556.0 1319.7,196.3 1331.7,196.3 1290.2,44.9 1286.5,50.8 665.5,27.6 544.2,124.0 488.9,74.8 506.9,132.7 93.5,39.9 60.5,112.6 129.5,155.5 74.2,197.2 1.0,202.9 1.0,202.9 194.0,202.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0013__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1341.0,680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0541982,41.5355562]}},{"type":"Feature","properties":{"resourceCoords":[194.0,202.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0563801,41.5340358]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.23"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"52.8,600.1 15.0,842.5 49.0,860.1 154.4,1081.2 90.6,1472.1 169.7,1627.6 119.2,1778.8 358.6,1874.5 1056.6,1827.5 1519.2,1868.8 1593.7,1079.3 1559.8,182.7 1391.8,105.4 1328.0,33.6 638.3,94.1 204.9,45.7 1.0,381.4 1.0,572.1 52.8,600.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1074.0,876.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.08177691794768,41.5239837236018]}},{"type":"Feature","properties":{"resourceCoords":[544.0,830.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.08299333133448,41.523533355906984]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p4 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.42"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3900.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3752.0"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"714.2,1190.4 117.8,1070.6 93.9,1846.9 728.5,1899.7 738.3,1912.0 943.8,1912.0 993.5,1480.2 979.1,1476.6 595.0,1376.0 714.2,1190.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[310.0,1300.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0864307,41.5233787]}},{"type":"Feature","properties":{"resourceCoords":[1375.0,1557.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0850355,41.5234517]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p4 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.18"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"5800.8"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"607.8,941.7 427.7,1057.3 1367.3,1367.5 1497.7,726.1 1612.0,686.8 1612.0,655.3 1320.2,278.8 1201.2,317.5 916.9,49.4 921.3,65.3 560.2,27.4 362.6,141.8 75.2,38.3 43.4,425.6 1.0,442.2 1.0,670.9 393.5,542.8 408.2,537.8 607.8,941.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.0858388368079,41.523990130841234]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.08393294165033,41.523598848945824]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1450.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.08439946148971,41.522307076809646]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1450.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-72.08630535664726,41.522698358705064]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.67"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"669.0,167.9 656.9,26.9 712.0,32.7 779.0,73.7 833.9,129.4 882.2,71.6 1014.0,115.5 1116.5,141.1 1424.0,197.9 1410.7,72.0 1437.2,69.1 1466.0,65.9 1493.3,1165.4 1511.0,1163.3 1517.8,1268.0 1426.7,1355.9 1462.5,1772.2 1306.2,1835.8 648.1,1866.4 468.3,1794.1 384.4,1678.0 52.1,748.5 127.5,389.6 92.4,312.9 198.1,256.9 131.3,110.8 669.0,167.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[581.0,1171.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.07755542953139,41.524032134933684]}},{"type":"Feature","properties":{"resourceCoords":[1419.0,211.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.07457690420583,41.52503958060869]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.42"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"55.1,69.9 141.6,387.9 48.5,817.2 61.7,1266.3 300.1,1651.0 607.5,1867.6 1570.7,1828.2 1519.9,1237.5 1570.3,698.9 1497.5,591.6 1491.7,309.2 1612.0,265.5 1612.0,257.3 1140.8,122.8 1140.8,125.9 1140.5,156.0 1.0,48.5 1.0,66.9 55.1,69.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[876.0,548.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.07359196259432,41.524570717582364]}},{"type":"Feature","properties":{"resourceCoords":[1693.0,1625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.07045282665766,41.52539990950163]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p7","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"confidence","value":"0.80"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1480.3,1665.9 1497.0,1794.5 1180.8,1743.8 1075.3,1720.1 939.4,1678.4 891.3,1738.8 833.7,1683.1 764.2,1642.8 707.6,1638.2 723.5,1782.3 171.7,1737.0 139.8,1671.4 159.8,1317.7 29.5,869.1 79.5,412.9 47.5,100.5 42.9,99.8 34.9,95.3 22.8,88.6 798.2,72.9 801.9,90.0 1213.0,66.1 1214.0,46.6 1210.3,34.4 1492.4,61.5 1552.5,152.2 1454.8,559.8 1548.3,1130.2 1576.7,1183.3 1577.2,1184.2 1569.2,1185.4 1504.3,1662.7 1480.3,1665.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[981.0,935.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0747719,41.5269312]}},{"type":"Feature","properties":{"resourceCoords":[1356.0,878.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0738647,41.5267197]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.76"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"355.9,1874.2 140.0,1887.4 139.2,1907.5 127.2,1911.9 125.8,1912.0 107.6,1912.0 60.2,1501.5 77.1,1496.8 17.1,720.9 11.1,733.3 7.1,741.6 45.5,327.6 129.0,314.1 140.4,142.3 429.0,22.4 1528.4,36.4 1590.2,324.4 1572.4,1062.0 1602.3,1065.6 1335.2,1378.3 1550.3,1345.5 796.0,1711.9 733.6,1693.2 571.8,1751.5 577.9,1779.8 355.9,1874.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[195.0,327.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.0766444880225,41.52979389800672]}},{"type":"Feature","properties":{"resourceCoords":[432.0,-169.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.07743662894137,41.53063271334841]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Norwich, Connecticut | 1885 | sanborn01161_001 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.81"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T00:10:33Z","modified":"2026-10-19T00:10:33Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"419.0,1912.0 401.8,1740.7 435.1,1684.7 262.7,863.3 242.2,1080.0 3.6,744.7 76.2,555.7 72.6,100.0 1478.8,41.3 1567.8,204.3 1583.6,566.8 1580.3,1301.2 1499.4,1555.2 1503.3,1846.1 443.7,1885.9 447.8,1912.0 419.0,1912.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd378m:g3784m:g3784nm:g3784nm_g011611885:01161_1885-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[827.0,1455.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.07180157679768,41.52973435686114]}},{"type":"Feature","properties":{"resourceCoords":[1473.0,1221.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-72.07009392395018,41.529840921726674]}}]}}]}