{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03753_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Hudson, Massachusetts | 1916 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"19"},{"label":"placed","value":"15"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 8, georef-snap 5, snap:0 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"7 sheet(s) cut into 14 panels"},{"label":"unplaced pages","value":"p10__2 (tier 1, 42.39683,-71.55938 +/-100m); p1__2 (tier 1, 42.38903,-71.56237 +/-188m); p4__2 (tier 1, 42.39145,-71.56399 +/-100m); p5__2 (tier 1, 42.39037,-71.56510 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0010__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p10 [1]","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"25"},{"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":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0010__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"130.3,13.9 65.7,1240.4 208.6,1913.0 1613.0,1913.0 1613.0,1108.5 1236.7,1110.4 1124.8,558.3 832.5,0.0 82.9,0.0 130.3,13.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0010__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[361.0,442.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.576643,42.396239]}},{"type":"Feature","properties":{"resourceCoords":[1095.0,1808.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5700391,42.3990051]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1913.0 -0.0,0.0 1131.6,0.0 1579.6,1864.8 1516.3,1913.0 0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.57945373537237,42.39333419160118]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.5783979445325,42.39623595548554]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.57377066892252,42.395304685087574]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.57482645976239,42.392402921203214]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0012__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p12 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2770.8"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4881.2"}],"created":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0012__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1913.0 697.0,1913.0 986.0,1913.0 1571.4,1913.0 1399.0,1491.8 1520.5,1432.8 1220.9,971.5 1316.7,909.4 982.1,862.5 842.3,931.6 639.4,1032.0 598.6,1064.5 0.0,1501.9 0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0012__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1447.0,905.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5663185,42.3884825]}},{"type":"Feature","properties":{"resourceCoords":[499.0,1472.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5653709,42.3845633]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0012__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p12 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"},{"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":"6007.6"}],"created":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0012__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1501.9 598.6,1064.5 639.4,1032.0 842.3,931.6 1200.9,754.3 1558.1,700.9 1537.4,528.6 1613.0,515.5 1613.0,474.0 1506.3,141.2 1613.0,106.7 1613.0,0.0 -0.0,0.0 0.0,1501.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0012__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[767.0,319.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5734489,42.3876989]}},{"type":"Feature","properties":{"resourceCoords":[883.0,688.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5715733,42.3874223]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p1 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3883.6"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"3768.4"}],"created":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1870.7 1613.0,1011.1 1496.3,971.0 1174.8,971.3 1183.5,1033.6 45.5,1020.6 100.6,1913.0 997.0,1913.0 1283.0,1913.0 1562.3,1913.0 1613.0,1870.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1156.0,837.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5611801,42.3895878]}},{"type":"Feature","properties":{"resourceCoords":[68.0,1392.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5638369,42.3885215]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p2 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"1"},{"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":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0002__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"413.9,1224.8 996.4,1219.1 1003.8,1773.3 1613.0,1785.8 1613.0,1099.5 830.9,1101.9 822.9,0.0 0.0,0.0 -0.0,1672.0 300.1,1681.2 298.9,1913.0 393.0,1913.0 421.6,1913.0 413.9,1224.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.55580828497955,42.39331976310839]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.5549654306873,42.39042566445107]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.55961783529973,42.38968818561392]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56046068959198,42.392582284271235]}},{"type":"Feature","properties":{"resourceCoords":[304.0,896.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5578285,42.3924289]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0002__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p2 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"3291.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3160.4"},{"label":"split_canvas_h","value":"4407.6"}],"created":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0002__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,-0.0 1017.2,-0.0 1010.0,1101.3 1613.0,1099.5 1613.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0002__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[822.9,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.55867436483861,42.39244496928491]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.5582524585468,42.391061968655684]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1101.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56084302291406,42.39062479476759]}},{"type":"Feature","properties":{"resourceCoords":[822.9,1101.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56126492920586,42.392007795396815]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1546.7,765.3 1344.2,1889.0 469.7,1798.7 122.8,1800.7 102.6,155.2 225.3,152.7 231.3,535.7 820.8,517.8 805.1,-0.0 1613.0,-0.0 1613.0,339.4 1537.2,445.8 1483.7,763.6 1546.7,765.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.55997697004057,42.39228532364337]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.55921468124625,42.38937989724917]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56384751414377,42.38870747204634]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.5646098029381,42.39161289844054]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0004__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p4 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"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":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0004__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1512.7,-0.0 668.9,0.0 678.7,460.7 0.0,462.9 -0.0,1654.0 505.2,1727.9 592.9,1741.7 1555.8,1897.1 1512.7,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0004__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56041031039078,42.39483683071666]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.55969570221389,42.39195398458961]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56429274383892,42.39132364844254]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56500735201581,42.39420649456959]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0005__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p5 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"},{"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":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0005__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"722.4,72.0 82.7,1593.4 -0.0,1688.7 -0.0,1913.0 1080.6,1913.0 1268.9,420.2 1274.6,73.5 722.4,72.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0005__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1160.0,1293.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5639164,42.3892]}},{"type":"Feature","properties":{"resourceCoords":[1236.0,699.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5640446,42.3902946]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"137.1,1433.0 272.1,1024.1 -0.0,930.3 0.0,0.0 374.2,-0.0 1489.9,198.4 1496.0,1064.0 1267.5,1913.0 137.1,1433.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.5645301432572,42.39419230564529]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56373793527708,42.39128155164139]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56837940951736,42.39058275633844]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56917161749749,42.39349351034234]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1891.5 32.4,1858.3 239.2,1260.2 517.0,0.0 603.4,0.0 1027.7,169.3 1068.9,848.6 1419.2,857.4 1411.7,714.6 1452.2,716.6 1412.6,731.8 1499.4,1579.1 1613.0,1891.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.57092092182125,42.38885187136996]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.57026173402807,42.39179406356662]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56557031022737,42.39121258095235]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56622949802056,42.388270388755686]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"921.4,1585.3 801.1,1913.0 -0.0,1913.0 -0.0,884.1 342.9,820.7 478.2,859.3 480.2,745.7 254.9,411.8 581.9,65.0 1027.3,70.0 1030.1,0.0 1498.2,0.0 1468.1,1163.2 1613.0,1152.0 1613.0,1508.3 921.4,1585.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.57157961387637,42.39379119896716]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56770657734214,42.39323737083782]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.56858969971913,42.3898209849456]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.57246273625336,42.39037481307494]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0009__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p9 [1]","metadata":[{"label":"streets","value":"18"},{"label":"intersections","value":"32"},{"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":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0009__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"194.1,838.1 247.2,853.0 431.6,789.0 552.2,977.6 555.2,1025.5 497.1,1190.5 529.6,1200.3 472.0,1418.2 510.0,1429.2 470.9,1635.4 609.5,1663.2 643.3,1913.0 1613.0,1913.0 1613.0,1199.7 1166.1,1180.2 1060.5,549.2 1080.1,289.6 1042.6,301.9 448.0,98.8 458.6,111.2 367.9,189.0 238.9,62.1 51.0,206.9 0.0,139.9 0.0,549.5 232.7,610.2 239.7,670.3 228.8,779.9 194.1,838.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0009__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[239.0,62.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.574776,42.3920657]}},{"type":"Feature","properties":{"resourceCoords":[1170.0,1202.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5693176,42.3958323]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0009__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hudson, Massachusetts | 1916 | sanborn03753_006 p9 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"4408.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2044.0"},{"label":"split_canvas_h","value":"4286.8"}],"created":"2026-09-22T08:45:12Z","modified":"2026-09-22T08:45:12Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0009__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1102.0,678.8 1207.4,1071.7 1613.0,1071.5 1613.0,128.9 1479.3,285.1 1484.3,198.5 1240.7,185.7 1225.0,-0.0 1103.4,0.0 1103.4,2.7 1167.5,128.1 1103.0,165.8 1102.0,668.8 1102.0,678.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037531916:03753_1916-0009__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1240.7,439.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.5756707,42.3914184]}},{"type":"Feature","properties":{"resourceCoords":[1240.7,185.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.574776,42.3920657]}}]}}]}