{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn03871_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Wakefield, Massachusetts | 1892 | 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":"14"},{"label":"placed","value":"6"},{"label":"unplaced","value":"8"},{"label":"fit sources","value":"georef-snap 4, snap:0 1, georef 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 11 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 42.50738,-71.07340 +/-100m); p1__3 (tier 1, 42.50757,-71.07250 +/-113m); p6__1 (tier 1, 42.50273,-71.06330 +/-100m); p6__2 (tier 1, 42.50185,-71.06560 +/-132m); p6__3 (tier 3, 42.50568,-71.07190 +/-611m); p7__2 (tier 3, 42.50070,-71.07461 +/-708m); p7__3 (tier 3, 42.50070,-71.07461 +/-708m); p7__4 (tier 3, 42.50070,-71.07461 +/-708m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Wakefield, Massachusetts | 1892 | sanborn03871_002 p2 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.72"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1888.8"},{"label":"split_canvas_w","value":"6448.0"},{"label":"split_canvas_h","value":"5759.2"}],"created":"2026-10-19T01:26:31Z","modified":"2026-10-19T01:26:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0002","type":"ImageService3","width":1612,"height":1912},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1611.0,1808.7 1611.0,1763.1 1586.3,1753.8 1560.4,506.7 1251.7,506.1 1176.5,703.9 1176.5,710.5 1176.5,710.5 1174.0,710.5 1172.8,713.5 72.1,735.7 24.5,811.9 53.8,1767.9 1.0,1784.4 1.0,1825.4 1558.5,1807.6 1611.0,1808.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,472.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0765808686286,42.50693933967965]}},{"type":"Feature","properties":{"resourceCoords":[1612.0,472.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07256887419629,42.507649833879455]}},{"type":"Feature","properties":{"resourceCoords":[1612.0,1912.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07171396927643,42.50498912137061]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1912.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07572596370873,42.504278627170805]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Wakefield, Massachusetts | 1892 | sanborn03871_002 p2 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.66"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6448.0"},{"label":"split_canvas_h","value":"2842.0"}],"created":"2026-10-19T01:26:31Z","modified":"2026-10-19T01:26:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0002","type":"ImageService3","width":1612,"height":1912},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"522.4,31.6 57.1,197.8 45.3,478.5 116.2,628.1 225.8,641.4 181.3,702.8 431.4,659.0 1091.3,709.5 1092.9,709.5 1176.5,481.6 1176.5,472.5 1176.5,472.2 1180.0,472.2 1181.5,468.0 1580.5,420.0 1366.5,104.5 522.4,31.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[474.0,368.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.06929681569788,42.49638895130721]}},{"type":"Feature","properties":{"resourceCoords":[911.0,368.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.06916598373105,42.495594215251046]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Wakefield, Massachusetts | 1892 | sanborn03871_002 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.97"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:26:31Z","modified":"2026-10-19T01:26:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1034.0,1855.3 349.8,1876.1 264.4,1876.2 138.6,1867.6 77.9,1796.0 34.3,580.6 171.8,48.1 643.4,91.1 1108.1,29.1 1546.8,87.1 1601.7,380.1 1516.5,739.0 1589.3,1598.1 1548.0,1788.9 1467.5,1852.8 1038.2,1893.0 1034.0,1855.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1316.0,1365.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.06771392504722,42.50692268232828]}},{"type":"Feature","properties":{"resourceCoords":[1316.0,1843.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.06745776082252,42.50605107088358]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Wakefield, Massachusetts | 1892 | sanborn03871_002 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:26:31Z","modified":"2026-10-19T01:26:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1581.3,1826.7 1575.5,1821.0 1432.6,1501.7 1452.4,1305.5 1556.3,1100.8 1496.8,422.6 1567.2,88.0 1083.5,54.8 1088.4,84.9 867.4,74.1 864.0,1.0 585.1,1.0 447.1,51.6 228.8,111.5 150.4,128.7 148.3,193.9 147.8,1768.9 106.5,1768.3 138.7,1875.0 1437.8,1880.1 1581.3,1826.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[138.0,138.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07177831371138,42.505202832489765]}},{"type":"Feature","properties":{"resourceCoords":[894.0,-30.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07089646934237,42.503910996995366]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Wakefield, Massachusetts | 1892 | sanborn03871_002 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"confidence","value":"0.95"},{"label":"confidence_model","value":"corpus-v2"}],"created":"2026-10-19T01:26:31Z","modified":"2026-10-19T01:26:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"115.8,1048.6 84.8,1051.2 112.7,827.5 188.2,829.6 209.4,549.1 167.7,402.1 123.6,175.8 112.1,94.8 106.0,47.4 186.6,86.1 254.2,23.3 649.9,23.7 651.0,8.6 704.4,87.9 830.8,110.6 917.2,120.0 1612.0,175.0 1612.0,213.7 1587.8,213.2 1567.4,1875.2 180.1,1869.0 142.9,1841.1 160.8,1828.1 141.4,1792.2 68.5,1785.1 143.2,1608.3 64.1,1543.0 45.0,1537.5 115.8,1048.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[693.0,1526.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0692497562814,42.503034859879484]}},{"type":"Feature","properties":{"resourceCoords":[966.0,703.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0692551505787,42.504623975084876]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0007__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Wakefield, Massachusetts | 1892 | sanborn03871_002 p7 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"confidence","value":"0.78"},{"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":"2026-10-19T01:26:31Z","modified":"2026-10-19T01:26:31Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1604.0,240.1 1598.3,87.2 1583.0,132.8 1020.3,22.7 40.4,57.5 45.9,693.8 411.6,764.0 485.2,1871.2 1561.5,1846.4 1570.3,287.2 1604.0,240.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764wm:g038711892:03871_1892-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[663.0,1108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.075861,42.499503]}},{"type":"Feature","properties":{"resourceCoords":[1164.0,1108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.074789,42.500006]}}]}}]}