{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03675_006.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Andover, Massachusetts | 1911 | 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":"25"},{"label":"placed","value":"16"},{"label":"unplaced","value":"9"},{"label":"fit sources","value":"georef 9, georef-snap 7"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 16 panels"},{"label":"unplaced pages","value":"p1 (tier 3, 42.65419,-71.13714 +/-575m); p10__2 (tier 1, 42.65036,-71.14858 +/-100m); p14__1 (tier 1, 42.65209,-71.13494 +/-100m); p14__2 (tier 1, 42.66394,-71.14491 +/-196m); p14__3 (tier 1, 42.67181,-71.14959 +/-100m); p14__4 (tier 1, 42.67252,-71.15029 +/-177m); p15__1 (tier 4, 42.65175,-71.14312 +/-3104m); p3__1 (tier 1, 42.65634,-71.14897 +/-100m); p3__3 (tier 1, 42.67072,-71.14430 +/-101m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0010__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p10 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"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":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0010__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"146.6,1913.0 1613.0,1913.0 1613.0,709.9 1065.2,713.0 1065.2,56.8 143.0,28.0 146.6,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0010__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[143.0,877.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1387271,42.6538261]}},{"type":"Feature","properties":{"resourceCoords":[143.0,28.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1396728,42.6552371]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0011__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p11 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4386.8"},{"label":"split_canvas_w","value":"2359.2"},{"label":"split_canvas_h","value":"3265.2"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0011__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"589.8,1913.0 583.0,1390.3 511.9,1312.1 508.3,1184.6 330.8,1123.5 306.3,1097.9 0.0,1099.3 0.0,1913.0 589.8,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0011__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[507.8,1518.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.143014,42.65262]}},{"type":"Feature","properties":{"resourceCoords":[507.8,1184.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1424908,42.6539575]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0011__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p11 [2]","metadata":[{"label":"streets","value":"2"},{"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":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0011__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1516.7,1444.4 1490.7,0.0 0.0,-0.0 0.0,1099.3 579.2,1096.7 589.8,1913.0 1543.0,1913.0 1613.0,1707.7 1613.0,1508.2 1516.7,1444.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0011__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":[-71.14145467435472,42.64916406784887]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13858470713741,42.651324891215445]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13510080593929,42.648821137662004]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.1379707731566,42.64666031429543]}},{"type":"Feature","properties":{"resourceCoords":[1495.0,206.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1384195,42.6508972]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,462.1 -0.0,35.6 59.2,0.0 846.7,0.0 847.6,165.1 1613.0,170.8 1613.0,1143.7 1480.3,1164.2 1418.3,1734.8 1390.7,1764.4 842.4,1758.2 851.7,1899.9 802.9,1761.2 695.3,1741.3 194.8,395.2 -0.0,462.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13970325173277,42.65166874549423]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13599424980399,42.65303835541338]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13380123042324,42.64978019331475]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13751023235203,42.648410583395595]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 -0.0,-0.0 190.1,0.0 298.1,578.5 1018.0,449.3 1043.6,457.6 1062.5,243.9 1343.0,284.1 1421.9,0.0 1613.0,0.0 1613.0,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14094834501797,42.64780599954708]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.1341605481118,42.651364510480995]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.12846303283787,42.6454014000613]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13525082974405,42.64184288912739]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0015__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p15 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"},{"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":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0015__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1294.7 451.6,1294.8 451.6,1913.0 1613.0,1913.0 1613.0,0.0 572.1,0.0 571.4,592.3 0.0,585.1 0.0,1294.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0015__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[785.0,1060.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1612725,42.6270937]}},{"type":"Feature","properties":{"resourceCoords":[656.0,1704.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.161379,42.626033]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0015__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p15 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5178.8"},{"label":"split_canvas_w","value":"1806.4"},{"label":"split_canvas_h","value":"2473.2"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0015__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"451.6,1294.8 0.0,1294.7 -0.0,1913.0 451.6,1913.0 451.6,1294.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0015__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1294.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.15875174198827,42.62705472157224]}},{"type":"Feature","properties":{"resourceCoords":[451.6,1294.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.15766654426378,42.62677294078751]}},{"type":"Feature","properties":{"resourceCoords":[451.6,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.15819114578836,42.62567975210044]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.15927634351286,42.62596153288517]}},{"type":"Feature","properties":{"resourceCoords":[314.7,1523.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1581896,42.6264538]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1616.2 1613.0,1782.4 1433.0,1782.0 1432.3,1913.0 -0.0,1913.0 -0.0,111.9 170.2,70.0 153.1,0.0 1067.9,0.0 1146.1,702.5 1276.8,738.7 1336.6,869.0 1347.6,1016.7 1613.0,1295.3 1613.0,1616.2 1613.0,1616.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14751566050748,42.65907394527498]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14335634901262,42.65820160558324]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14475327500394,42.654548225245335]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.1489125864988,42.65542056493708]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p3 [2]","metadata":[{"label":"streets","value":"5"},{"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":"7652.0"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"151.4,1608.4 1501.2,1837.1 1336.2,597.1 1613.0,473.8 1334.9,452.9 1330.7,0.0 807.0,0.0 804.2,314.6 802.1,507.2 694.4,507.2 454.1,928.5 519.0,977.0 151.4,1608.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1416.0,1302.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1422718,42.6585248]}},{"type":"Feature","properties":{"resourceCoords":[151.0,1608.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1450733,42.6571124]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1152.8,1768.7 1163.6,1913.0 -0.0,1913.0 -0.0,-0.0 1613.0,-0.0 1613.0,1733.9 1152.8,1768.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14019886699431,42.663828858912986]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13903920681145,42.66091331538864]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14370840802603,42.65989479696219]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.1448680682089,42.66281034048654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p5","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1198.0,1860.7 -0.0,1496.2 -0.0,1193.1 663.8,-0.0 1547.9,-0.0 1613.0,1913.0 1198.0,1860.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0005/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[675.0,1713.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1422718,42.6585248]}},{"type":"Feature","properties":{"resourceCoords":[1097.0,395.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1390835,42.6597638]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"185.3,1913.0 -0.0,1553.2 -0.0,379.9 96.9,261.8 145.0,121.8 73.0,1.8 1391.1,396.7 1469.5,806.8 1613.0,738.4 1474.5,876.0 1457.8,1833.9 778.3,1714.3 438.5,1705.8 185.3,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.1452433172846,42.657049892340254]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14153746106476,42.658496810624605]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.1392204531333,42.655241696233816]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14292630935314,42.653794777949464]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"215.6,1755.5 190.3,769.8 326.6,622.1 562.8,473.9 1287.5,214.1 1346.8,1156.0 1208.5,1162.0 1386.5,1758.5 215.6,1755.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14205957697243,42.65803013237835]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13838063093631,42.65931965522957]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13631563679215,42.65608822457243]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13999458282827,42.65479870172121]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p8 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"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":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"222.4,1913.0 383.0,1913.0 806.1,1913.0 1205.9,1185.1 1613.0,1402.2 1613.0,0.0 1116.2,0.0 1118.4,33.0 350.2,76.0 135.5,1006.5 -0.0,973.3 -0.0,1602.2 279.2,1708.3 222.4,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1094.0,777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.136331,42.658647]}},{"type":"Feature","properties":{"resourceCoords":[530.0,1820.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1356428,42.656519]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0008__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p8 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"3224.4"},{"label":"split_canvas_y","value":"4740.4"},{"label":"split_canvas_w","value":"3227.6"},{"label":"split_canvas_h","value":"2911.6"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0008__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 1613.0,1402.2 1205.9,1185.1 806.1,1913.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0008__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[806.1,1185.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14911611973477,42.660263832695215]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1185.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14706270667077,42.66021077811371]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14712777156043,42.65884817867602]}},{"type":"Feature","properties":{"resourceCoords":[806.1,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14918118462444,42.658901233257524]}},{"type":"Feature","properties":{"resourceCoords":[1020.1,1845.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.1486308,42.659014]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Andover, Massachusetts | 1911 | sanborn03675_006 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T14:15:18Z","modified":"2026-09-22T14:15:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,414.3 425.8,0.0 765.1,0.0 1446.4,102.4 1449.9,1754.7 672.1,1756.6 223.9,1913.0 -0.0,1913.0 -0.0,414.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764am:g036751911:03675_1911-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14316222259842,42.65417658813127]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13940273334342,42.655556341075936]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.13719338481204,42.65225396027885]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.14095287406704,42.65087420733418]}}]}}]}