{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03745_003.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Haverhill, Massachusetts | 1906 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"102"},{"label":"placed","value":"77"},{"label":"unplaced","value":"25"},{"label":"fit sources","value":"georef-snap 40, georef 37, snap:0 3, georef:contradicted 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"10 sheet(s) cut into 24 panels"},{"label":"unplaced pages","value":"p0__1 (tier 2, 42.77671,-71.07734 +/-100m); p0__2 (tier 1, 42.77718,-71.07861 +/-100m); p31__2 (tier 1, 42.77732,-71.07086 +/-112m); p57__1 (tier 3, 42.76668,-71.06527 +/-497m); p57__3 (tier 1, 42.76570,-71.06638 +/-140m); p75 (tier 2, 42.77781,-71.07560 +/-100m); p76 (tier 1, 42.77608,-71.07539 +/-258m); p77 (tier 4, 42.77626,-71.08074 +/-2866m); p78__1 (tier 4, 42.77626,-71.08074 +/-2866m); p78__2 (tier 4, 42.77626,-71.08074 +/-2866m); p79__1 (tier 4, 42.77626,-71.08074 +/-2866m); p79__2 (tier 4, 42.77626,-71.08074 +/-2866m); p79__3 (tier 1, 42.76864,-71.05348 +/-199m); p80__1 (tier 1, 42.79128,-71.07079 +/-100m); p80__2 (tier 3, 42.78994,-71.07227 +/-497m); p81__1 (tier 1, 42.76885,-71.07044 +/-198m); p81__2 (tier 4, 42.77626,-71.08074 +/-2866m); p82 (tier 1, 42.78070,-71.07202 +/-251m); p83__1 (tier 4, 42.77626,-71.08074 +/-2866m); p83__2 (tier 4, 42.77626,-71.08074 +/-2866m); p83__3 (tier 4, 42.77626,-71.08074 +/-2866m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p1","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0001","type":"ImageService3","width":1626,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"575.5,1557.1 578.1,1621.1 -0.0,1598.3 -0.0,-0.0 1309.9,0.0 1271.3,1157.8 1433.0,1184.4 1430.5,1383.0 1549.7,1386.7 1554.8,1516.4 575.5,1557.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1563.0,1719.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.095991,42.768163]}},{"type":"Feature","properties":{"resourceCoords":[1430.0,1383.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.096731,42.768522]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0010","type":"ImageService3","width":1624,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"243.7,1148.5 137.0,504.3 295.7,408.8 334.5,0.0 742.9,364.3 900.2,180.4 942.2,0.0 1624.0,0.0 1624.0,237.3 1330.2,14.2 1220.5,224.1 963.7,576.4 1349.0,946.5 1458.7,1102.8 1497.2,1267.5 1624.0,1251.4 1624.0,1920.0 -0.0,1920.0 -0.0,1459.5 158.6,1437.4 243.7,1148.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08723663024222,42.77510851116271]}},{"type":"Feature","properties":{"resourceCoords":[1624.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08339434983469,42.775911399442734]}},{"type":"Feature","properties":{"resourceCoords":[1624.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08211025608395,42.77255342141658]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08595253649148,42.77175053313656]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0011","type":"ImageService3","width":1624,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"111.6,1152.3 83.3,322.5 -0.0,321.2 -0.0,-0.0 1460.0,0.0 1394.0,1646.5 771.5,1692.5 280.1,1920.0 195.0,1651.0 111.6,1152.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09600198685612,42.77453920466157]}},{"type":"Feature","properties":{"resourceCoords":[1624.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09311452958431,42.776594251170266]}},{"type":"Feature","properties":{"resourceCoords":[1624.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08982777917451,42.77407076514971]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09271523644632,42.772015718641015]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0012","type":"ImageService3","width":1619,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"463.1,1784.3 457.6,1417.6 210.8,693.5 125.3,145.7 1287.0,-0.0 1619.0,245.9 1619.0,1920.0 463.1,1784.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0887795283385,42.77690258007619]}},{"type":"Feature","properties":{"resourceCoords":[1619.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08584595338591,42.77486914426301]}},{"type":"Feature","properties":{"resourceCoords":[1619.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08910819748482,42.772297446288995]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09204177243741,42.77433088210218]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p13","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0013","type":"ImageService3","width":1624,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"183.3,1920.0 145.4,1854.7 -0.0,1920.0 -0.0,-0.0 553.6,0.0 552.2,67.7 596.3,74.1 1420.4,0.0 1437.2,454.9 1414.2,979.4 1372.1,1155.7 1300.2,1104.2 925.5,1290.7 1043.8,1920.0 686.1,1920.0 580.9,1483.4 225.6,1670.8 294.6,1920.0 183.3,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[705.0,327.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.092654,42.779563]}},{"type":"Feature","properties":{"resourceCoords":[1418.0,-18.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.091122,42.780487]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p14","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0014","type":"ImageService3","width":1619,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 64.5,0.0 3.1,116.4 163.8,126.6 166.9,202.8 266.4,255.2 322.1,0.0 727.9,0.0 616.2,439.7 935.9,608.2 1122.5,0.0 1555.8,0.0 1589.4,79.9 1599.5,790.8 943.6,1429.1 268.9,1736.5 -0.0,1783.1 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[913.0,1437.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.089576,42.775709]}},{"type":"Feature","properties":{"resourceCoords":[102.0,1129.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0915871,42.7751534]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0015","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1628.0,0.0 1628.0,1439.7 911.6,1463.4 882.9,1174.8 -0.0,1277.6 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0015/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09385528672694,42.782216567076816]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0899639494711,42.78285462816191]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08894586371638,42.779462514268374]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09283720097221,42.77882445318328]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0016","type":"ImageService3","width":1619,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1517.9,1685.3 790.5,1617.0 479.8,1539.4 141.9,904.7 187.2,725.8 223.2,0.0 1517.5,0.0 1517.9,1685.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09142763455702,42.77988835977547]}},{"type":"Feature","properties":{"resourceCoords":[1619.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08760257836549,42.78061441510178]}},{"type":"Feature","properties":{"resourceCoords":[1619.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08643769156114,42.77726142269865]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09026274775267,42.77653536737234]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0017","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"293.7,1836.5 138.8,1816.2 6.1,1753.4 211.3,1254.3 837.3,263.4 387.2,0.0 1296.8,0.0 1314.1,319.3 1610.3,1678.7 293.7,1836.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08959892939009,42.77504483058849]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08931883668555,42.778036410827326]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08454581333102,42.7777922350664]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08482590603556,42.774800654827565]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p18","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"19"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0018","type":"ImageService3","width":1619,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"124.9,182.6 445.5,142.5 1452.8,167.4 1421.2,330.6 1408.8,1463.0 975.0,1371.7 895.7,1151.3 267.0,1379.9 124.9,182.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[632.0,1000.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0840268,42.7762237]}},{"type":"Feature","properties":{"resourceCoords":[632.0,145.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.083874,42.777793]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0019","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"586.0,1342.2 487.7,1082.6 60.4,662.5 423.5,107.6 1090.9,561.8 1289.8,606.4 1509.9,1920.0 709.9,1920.0 710.9,1326.5 586.0,1342.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0019/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08517044958606,42.77571847605178]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0812611354515,42.77654042595292]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07994977229284,42.77313229247671]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0838590864274,42.772310342575565]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p2","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0002","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1520.0,1460.9 1623.0,1462.3 1623.0,1920.0 -0.0,1920.0 -0.0,-0.0 1453.3,0.0 1416.0,178.2 1525.6,1023.5 1520.0,1460.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1029.0,1326.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.097093,42.764854]}},{"type":"Feature","properties":{"resourceCoords":[677.0,650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.098758,42.765552]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p20","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0020","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"213.3,259.7 -0.0,156.1 -0.0,66.4 236.3,178.7 329.9,-0.0 1628.0,-0.0 1628.0,1920.0 175.6,1920.0 213.9,1731.9 232.1,569.4 151.4,564.0 213.3,259.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1138.0,133.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07657,42.775093]}},{"type":"Feature","properties":{"resourceCoords":[902.0,1852.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0807273,42.7741348]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p21","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0021","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"486.3,71.5 1475.0,30.2 1319.1,622.0 1352.8,657.2 1628.0,684.2 1628.0,807.8 997.5,699.6 984.5,768.6 1628.0,874.9 1535.3,1528.4 856.2,1445.3 786.5,1813.1 660.4,1920.0 772.5,1866.8 205.2,672.8 -0.0,664.8 -0.0,233.0 486.3,71.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[436.0,1474.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07657,42.775093]}},{"type":"Feature","properties":{"resourceCoords":[1421.0,248.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.074132,42.777306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p22","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0022","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"632.9,793.3 610.1,674.0 337.6,699.0 298.3,671.2 340.8,71.0 119.1,113.0 124.1,0.0 1165.3,0.0 1146.5,103.5 1628.0,145.8 1605.3,1480.2 1628.0,1480.0 1628.0,1920.0 -0.0,1920.0 -0.0,1552.0 675.5,1506.2 653.5,857.9 -0.0,874.9 -0.0,805.9 632.9,793.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0022/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07479761455502,42.777947991948395]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07081667625671,42.77737653864208]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07172840965781,42.77390603913437]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07570934795612,42.77447749244068]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p23","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0023","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,129.4 11.6,0.0 879.5,0.0 873.2,72.2 1381.8,186.4 1415.7,994.7 1471.8,1045.5 1628.0,1084.4 1628.0,1334.4 1593.2,1397.3 1348.7,1417.6 1373.6,1920.0 619.9,1920.0 586.7,1480.8 564.0,1482.7 484.9,133.8 -0.0,129.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[866.0,135.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0699748,42.7769284]}},{"type":"Feature","properties":{"resourceCoords":[265.0,135.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0714122,42.7772158]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0024","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"87.0,870.1 93.0,74.5 873.3,204.7 976.0,0.0 1628.0,0.0 1628.0,1920.0 -0.0,1920.0 -0.0,1282.6 242.7,1273.8 280.4,1209.3 292.5,968.0 140.0,922.7 87.0,870.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0024/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06896396390322,42.776763608919026]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06498820431305,42.77611290831803]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0660263581859,42.772646870867725]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07000211777606,42.773297571468724]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p25","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0025","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"313.4,0.0 1309.0,0.0 1345.8,248.3 1346.5,647.3 1253.5,1788.9 341.1,1679.8 313.4,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0025/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08862102131413,42.78047795598713]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08468912474935,42.78117868731623]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08357107276598,42.77775112563257]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08750296933076,42.77705039430347]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p26","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"23"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0026","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"237.1,1649.8 119.9,217.6 1319.6,230.8 1375.9,996.6 1576.2,961.5 1333.0,1841.8 237.1,1649.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[979.0,1042.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082826,42.779049]}},{"type":"Feature","properties":{"resourceCoords":[979.0,230.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082993,42.780536]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0027","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"179.9,189.4 1312.1,270.0 1473.4,311.6 1266.2,1537.1 1303.5,1920.0 888.2,1920.0 810.5,1616.0 735.4,1646.7 251.3,606.6 183.1,410.9 179.9,189.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0027/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0826428615896,42.774945816535016]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08259499696142,42.77793465539595]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07782636365954,42.777892928419206]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07787422828773,42.77490408955827]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p28","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0028","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"19.1,1191.5 272.8,0.0 1161.3,197.9 1480.2,1047.5 1628.0,1777.0 98.8,1781.5 61.6,1654.8 0.0,1652.7 0.0,1572.3 40.1,1574.0 19.1,1191.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0028/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08175772526877,42.77713501005235]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08188123041722,42.780135627630784]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07709362738012,42.78024329180995]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07697012223167,42.777242674231516]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p29","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"18"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0029","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"111.5,1889.9 114.3,430.3 1627.7,0.0 1439.7,972.3 1220.0,1772.1 469.6,1785.5 111.5,1889.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0029/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1127.0,710.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.074882,42.779646]}},{"type":"Feature","properties":{"resourceCoords":[106.0,1649.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.077357,42.777859]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p3","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0003","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,242.4 51.8,67.0 -0.0,62.7 0.0,-0.0 960.8,0.0 960.5,179.4 1329.4,155.2 1301.8,0.0 1567.6,0.0 1322.2,1335.8 1623.0,1391.0 1623.0,1759.5 1496.5,1920.0 72.5,1920.0 103.0,1544.7 -0.0,1535.0 -0.0,242.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[364.0,557.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.096633,42.766972]}},{"type":"Feature","properties":{"resourceCoords":[44.0,988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.096614,42.765984]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p30","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0030","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"290.6,1766.2 347.3,1047.5 348.9,50.6 349.0,41.0 1099.4,35.9 1441.5,708.9 1503.5,1021.0 1333.3,1805.4 290.6,1766.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0030/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[505.0,1846.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0739981,42.7777]}},{"type":"Feature","properties":{"resourceCoords":[349.0,41.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.073686,42.780998]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0031__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p31 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6468.0"},{"label":"split_canvas_h","value":"7680.0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0031__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0031","type":"ImageService3","width":1617,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"363.4,1714.0 1186.5,1852.5 1465.3,777.0 1478.8,74.0 1512.5,0.0 229.1,14.9 549.8,783.6 564.9,986.2 363.4,1714.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0031__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1050.0,30.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.069741,42.780612]}},{"type":"Feature","properties":{"resourceCoords":[1465.0,777.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.068867,42.77913]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0032__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p32 [1]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"7680.0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0032__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0032","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1497.8,1594.1 1628.0,1543.0 1628.0,421.5 999.7,416.7 997.0,0.0 513.4,0.0 527.5,76.8 -0.0,173.7 88.6,518.5 130.2,1795.7 1434.2,1784.5 1497.8,1594.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0032__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[643.0,1785.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.068777,42.776592]}},{"type":"Feature","properties":{"resourceCoords":[498.0,421.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.067825,42.779013]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0032__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p32 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"3988.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2524.0"},{"label":"split_canvas_h","value":"1686.0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0032__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0032","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,0.0 1045.0,-0.0 1031.7,40.1 1061.7,417.2 1628.0,421.5 1628.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0032__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[997.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06871506189664,42.78053172286301]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06722750170927,42.780304901711375]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,421.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0674333518411,42.77957756253019]}},{"type":"Feature","properties":{"resourceCoords":[997.0,421.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06892091202847,42.77980438368183]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0033","type":"ImageService3","width":1617,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"329.7,173.7 434.9,161.4 463.2,431.2 987.9,339.1 1422.5,417.3 1356.5,876.3 1396.2,1432.2 316.9,1648.4 329.7,173.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0033/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08332042879272,42.78211657174948]}},{"type":"Feature","properties":{"resourceCoords":[1617.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0793090928336,42.782616311332326]}},{"type":"Feature","properties":{"resourceCoords":[1617.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07850628964326,42.779095797017455]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08251762560238,42.778596057434605]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p34 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"4740.4"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"2939.6"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1920.0 1628.0,1920.0 1628.0,1185.3 0.0,1185.1 -0.0,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1185.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06583126731289,42.771238618945446]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1185.1],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06374450842873,42.77301221396376]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06266132359713,42.77231576380981]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06474808248127,42.77054216879149]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p34 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6512.0"},{"label":"split_canvas_h","value":"4741.2"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1146.5,962.2 1170.1,120.7 325.9,108.3 340.2,580.7 477.0,1131.7 1146.5,962.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0034__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[743.0,116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07858,42.781772]}},{"type":"Feature","properties":{"resourceCoords":[1198.0,949.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0774615,42.7802465]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p35","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0035/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0035","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1587.5,0.0 1550.5,1379.8 65.2,1920.0 53.4,1826.0 -0.0,1854.4 -0.0,1020.8 43.6,1028.8 169.3,983.8 296.7,1097.0 463.8,1048.6 1517.3,0.0 1587.5,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0035/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07742977802546,42.78363835484117]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0733859072206,42.78353452025897]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07355209806761,42.77999863951929]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07759596887247,42.7801024741015]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p36","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0036","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"95.0,881.1 315.1,1071.7 860.8,450.2 847.0,410.1 1256.2,0.0 1628.0,0.0 1628.0,1168.3 1628.0,1168.3 1628.0,1901.1 106.3,1810.0 95.0,881.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0036/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07362339747208,42.78431464846273]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06960452806017,42.7840985460034]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06994934891331,42.780595355634645]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07396821832522,42.78081145809398]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p37","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0037/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0037","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"146.9,1240.9 320.4,1034.1 439.3,760.0 534.5,289.7 1623.0,280.2 1623.0,1513.9 325.2,1494.2 147.8,1393.8 146.9,1240.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0037/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07949355911448,42.78326054644191]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07656762401335,42.78532674291307]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07326053954348,42.78276841367404]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07618647464462,42.78070221720288]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p38","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"12"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0038","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,141.4 1628.0,1920.0 1102.4,1920.0 838.7,1883.6 817.5,1920.0 -0.0,1920.0 -0.0,1632.2 397.5,1276.6 118.2,1279.6 145.2,55.6 1438.1,60.2 1628.0,141.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0038/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[791.0,1272.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.072773,42.784193]}},{"type":"Feature","properties":{"resourceCoords":[383.0,55.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.075654,42.785257]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p39","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0039/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0039","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1623.0,0.0 1623.0,764.0 1536.1,774.0 1474.5,1156.7 1492.5,1514.2 -0.0,1408.0 -0.0,998.7 114.7,0.0 1623.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0039/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[880.0,1698.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.086763,42.780355]}},{"type":"Feature","properties":{"resourceCoords":[1306.0,1765.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.085697,42.780493]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p4","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0004","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,346.8 759.6,50.4 1099.8,44.6 1127.5,0.0 1392.0,0.0 1360.7,94.9 1623.0,153.7 1623.0,1920.0 -0.0,1920.0 -0.0,346.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[737.0,536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.093468,42.769764]}},{"type":"Feature","properties":{"resourceCoords":[1505.0,586.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.091709,42.770319]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p40","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0040","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"322.8,1452.8 271.7,726.4 321.2,335.1 1406.7,184.1 1431.3,620.1 1398.5,624.4 1172.8,1657.4 322.8,1452.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0040/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[571.0,670.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.085133,42.781912]}},{"type":"Feature","properties":{"resourceCoords":[320.0,1344.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.085226,42.780614]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p41","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"12"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0041","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"497.4,1625.3 179.9,1503.2 544.0,531.0 576.5,531.5 613.7,104.3 1276.5,100.9 1232.0,1270.4 759.8,1218.7 808.2,948.9 703.1,931.7 497.4,1625.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[888.0,539.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082439,42.782698]}},{"type":"Feature","properties":{"resourceCoords":[497.0,1625.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082143,42.780586]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p42","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0042","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"170.9,78.7 1468.9,94.0 1602.6,1381.3 1566.0,1680.7 1463.0,1920.0 1371.5,1920.0 96.0,1256.3 170.9,78.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[722.0,1103.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.079655,42.782528]}},{"type":"Feature","properties":{"resourceCoords":[1469.0,94.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.079145,42.784787]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p43","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0043","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"44.1,1713.7 198.3,923.0 388.2,215.7 1623.0,169.0 1623.0,1050.5 1466.6,1051.4 1463.3,1719.0 44.1,1713.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0043/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1372.0,1721.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.075654,42.785257]}},{"type":"Feature","properties":{"resourceCoords":[170.0,1051.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.078971,42.784583]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p44","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0044","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"401.5,130.2 397.0,0.0 1258.1,0.0 1212.9,330.7 1628.0,317.9 1628.0,1920.0 1185.4,1920.0 1184.6,1812.1 989.2,1729.0 -0.0,1722.3 -0.0,1040.8 159.7,1040.2 155.2,140.3 401.5,130.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0044/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.078442924119,42.78759253628326]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07560957777979,42.789651989935265]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07232317833177,42.787182399158695]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07515652467099,42.78512294550669]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p45","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0045","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"316.8,86.6 1394.0,115.8 1395.9,1768.8 209.1,1661.6 316.8,86.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0045/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08326303959731,42.78614958801441]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08152924230409,42.78344352169979]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08586055185731,42.78192757842668]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08759434915054,42.784633644741305]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p46","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0046/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0046","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"153.1,1772.4 249.8,136.2 1408.2,144.6 1457.7,1790.9 153.1,1772.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0046/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08436264012546,42.78648807355306]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08078194446382,42.787839566741326]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0786253445156,42.78471848360554]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08220604017724,42.78336699041727]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p47","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0047/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0047","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1722.8 121.5,1725.8 559.1,416.7 706.6,76.5 1623.0,128.7 1613.0,1722.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0047/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08332228981615,42.78794823008974]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08058410764374,42.790080847884745]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07717044520288,42.78768686957499]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07990862737529,42.785554251779985]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p48","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0048/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0048","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"244.8,132.6 1006.4,197.9 887.1,0.0 1628.0,0.0 1628.0,1920.0 1026.2,1920.0 1082.7,1597.8 240.1,1571.8 244.8,132.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0048/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1157.0,896.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.077399,42.79017]}},{"type":"Feature","properties":{"resourceCoords":[1061.0,1733.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.076045,42.7889845]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p49","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0049/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0049","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1389.8,0.0 1524.7,733.4 1538.6,1563.2 64.1,1605.4 64.2,1604.5 -0.0,1599.2 -0.0,-0.0 1389.8,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[565.0,1168.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.089087,42.783901]}},{"type":"Feature","properties":{"resourceCoords":[1537.0,361.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.087355,42.785861]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0005","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"158.3,1584.9 155.2,1389.2 -0.0,1367.3 -0.0,-0.0 1114.3,0.0 1162.7,290.2 1202.1,271.4 1164.3,299.9 1341.2,1359.6 918.4,1465.9 895.0,1674.6 627.9,1691.7 666.5,1845.5 298.6,1912.7 276.1,1585.8 158.3,1584.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09923355457535,42.77078525561175]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09587589137455,42.772431784184626]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0932410610531,42.76949535746197]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09659872425391,42.76784882888909]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p50","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0050","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1594.1,1866.2 14.5,1799.8 144.0,819.9 -0.0,806.1 0.0,-0.0 1611.5,0.0 1594.1,1866.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0050/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08863366831905,42.78751079814052]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08492213980621,42.788722589503294]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08298843602705,42.78548751442366]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08669996453989,42.78427572306088]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p51","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"15"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0051/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0051","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"261.4,462.7 -0.0,446.6 -0.0,-0.0 287.9,0.0 286.4,82.9 1281.8,89.8 1590.1,196.0 1623.0,108.5 1623.0,885.0 1332.8,969.0 1295.6,1233.8 1296.5,1786.6 160.4,1772.7 261.4,462.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0051/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[922.0,1782.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.081946,42.7871095]}},{"type":"Feature","properties":{"resourceCoords":[257.0,522.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.084901,42.788609]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p52","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0052/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0052","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"310.3,1035.2 513.5,446.9 573.7,0.0 1628.0,0.0 1628.0,142.8 1628.0,1289.1 1425.0,1352.3 1597.6,1504.2 292.5,1809.6 310.3,1035.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0052/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08427055454092,42.79185806201168]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08069066824545,42.79332380721277]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07835154713074,42.79020370615439]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0819314334262,42.78873796095329]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p53","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0053/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0053","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1782.7 -0.0,0.0 492.4,-0.0 540.9,55.9 944.7,115.2 1310.0,220.6 1623.0,352.8 1510.8,701.7 1477.9,1672.5 1394.3,1669.2 1387.6,1920.0 266.9,1920.0 -0.0,1782.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0053/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08348035057817,42.79321554433066]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08153213386596,42.790605317546074]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08571051747013,42.78890209022306]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08765873418234,42.791512317007644]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p54","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0054/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0054","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,0.0 1628.0,1920.0 1425.8,1920.0 1428.6,1775.7 421.5,1761.8 432.1,1269.6 -0.0,1255.4 -0.0,-0.0 1628.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0054/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[812.0,913.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0831031,42.794129]}},{"type":"Feature","properties":{"resourceCoords":[540.0,1530.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082922,42.792901]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0055/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p55","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0055/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0055","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1392.1,1920.0 -0.0,1449.0 -0.0,0.0 1623.0,0.0 1623.0,1920.0 1392.1,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0055/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[569.0,215.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.055252,42.76878]}},{"type":"Feature","properties":{"resourceCoords":[569.0,1628.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.056953,42.766527]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p56","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0056/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0056","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1628.0,0.0 1628.0,1920.0 0.0,1920.0 0.0,-0.0 1628.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0056/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.05327695009477,42.76228270217531]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.05225519591481,42.76517499014708]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.04764158864839,42.76428406546976]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.04866334282835,42.76139177749799]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0057__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p57 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3794.4"},{"label":"split_canvas_w","value":"2552.4"},{"label":"split_canvas_h","value":"3885.6"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0057__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0057","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"46.2,987.1 2.6,950.8 0.0,950.8 -0.0,1920.0 638.1,1920.0 631.0,949.0 46.2,987.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0057__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,948.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06958527789487,42.768125151342225]}},{"type":"Feature","properties":{"resourceCoords":[638.1,948.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06847777950523,42.76897086739726]}},{"type":"Feature","properties":{"resourceCoords":[638.1,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06673498367695,42.76772344844116]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0678424820666,42.76687773238613]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p58","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0058","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1512.0,1920.0 -0.0,1920.0 -0.0,0.0 1268.6,0.0 1454.6,624.8 1502.3,624.5 1512.0,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0058/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0922907888434,42.766776800710176]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0882427981187,42.76673305069385]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08831258753571,42.763203480576095]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09236057826041,42.76324723059242]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0059/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p59","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0059/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0059","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1623.0,1398.2 761.6,1573.0 826.2,1920.0 0.0,1920.0 0.0,-0.0 304.0,0.0 297.9,58.7 1574.0,181.2 1531.5,612.9 1623.0,624.4 1623.0,1398.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0059/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08868197446282,42.762645632322815]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08904260695797,42.765649433915705]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08423627087859,42.76596485257577]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08387563838343,42.76296105098288]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0006","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"701.6,1910.0 373.4,1820.7 -0.0,1849.8 0.0,-0.0 1336.2,0.0 1394.0,966.3 1564.4,1606.2 1024.4,1920.0 740.3,1875.0 701.6,1910.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09772631200966,42.77254771924665]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09478128364806,42.77457994068799]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09152914163377,42.77200447109745]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09447416999537,42.769972249656114]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p60","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0060","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"462.8,1712.0 -0.0,1576.8 -0.0,-0.0 1418.4,0.0 1427.1,96.1 1628.0,112.2 1615.3,1892.0 1430.0,1893.7 1380.2,1791.5 491.2,1624.0 462.8,1712.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0060/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08976911767012,42.76840171022754]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08584127273186,42.76922034362279]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08453535621418,42.765795647571004]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08846320115244,42.764977014175756]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p61","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"12"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0061","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1045.0 125.0,1068.5 174.0,1169.8 356.9,1167.7 362.2,119.5 403.0,41.3 1447.0,44.0 1446.9,1477.6 892.4,1708.8 870.7,1920.0 10.8,1920.0 -0.0,1045.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0061/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1082.0,1620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0825,42.765393]}},{"type":"Feature","properties":{"resourceCoords":[1447.0,44.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.082693,42.768408]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0062/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p62","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0062/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0062","type":"ImageService3","width":1628,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"354.5,482.8 642.1,512.0 642.6,637.3 1388.8,634.4 1223.5,819.2 1139.2,1879.0 243.9,1920.0 354.5,482.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0062/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0839456792512,42.769020529232385]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08011561830241,42.77006401993148]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07845097941447,42.76672462419957]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08228104036326,42.76568113350047]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0063/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p63","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0063/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0063","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1021.0 -0.0,-0.0 1623.0,0.0 1623.0,1280.1 1569.5,1231.0 1569.3,1149.6 1522.6,1143.1 1516.7,1837.4 214.1,1700.2 163.8,1716.9 128.9,1770.8 199.1,1055.7 75.0,1065.2 -0.0,1021.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0063/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08717255661388,42.770709895005986]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08338372555066,42.77178169848227]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08166860612016,42.768468164313575]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08545743718338,42.76739636083729]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0064/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p64","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0064/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0064","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1632.0,689.3 1632.0,1730.3 1502.2,1703.4 1474.4,1920.0 867.6,1920.0 806.6,1864.9 756.9,1920.0 -0.0,1920.0 -0.0,1091.4 47.3,1097.6 92.9,1273.9 148.7,1274.1 102.7,1229.1 92.3,0.0 1632.0,0.0 1632.0,689.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0064/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08353972039176,42.771611303428564]}},{"type":"Feature","properties":{"resourceCoords":[1632.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07975998528909,42.77265341810848]}},{"type":"Feature","properties":{"resourceCoords":[1632.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0781015458573,42.76936611756847]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08188128095996,42.76832400288855]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0065/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p65","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0065/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0065","type":"ImageService3","width":1627,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1852.3 0.0,-0.0 1129.0,0.0 1375.4,438.1 1529.9,855.3 1618.1,1872.2 0.0,1852.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0065/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08241365868449,42.76307563544003]}},{"type":"Feature","properties":{"resourceCoords":[1627.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0831187961579,42.76604838363483]}},{"type":"Feature","properties":{"resourceCoords":[1627.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07837380442977,42.76666359423684]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07766866695636,42.76369084604204]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0066/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p66","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0066/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0066","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"33.6,1785.8 38.0,176.5 641.5,0.0 1265.2,0.0 1632.0,593.8 1632.0,1920.0 -0.0,1920.0 -0.0,1786.2 33.6,1785.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0066/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1605.0,536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0744133,42.7664437]}},{"type":"Feature","properties":{"resourceCoords":[38.0,176.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.078488,42.766632]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p67","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0067/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0067","type":"ImageService3","width":1627,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"103.2,660.8 596.8,175.4 521.4,0.0 1627.0,0.0 1627.0,67.5 1575.7,85.0 1627.0,94.3 1627.0,1318.2 993.3,1730.7 512.0,1920.0 40.0,941.1 103.2,660.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0067/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[941.0,1757.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.078488,42.766632]}},{"type":"Feature","properties":{"resourceCoords":[1580.0,470.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.076279,42.76877]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p68","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0068/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0068","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1322.6,1920.0 1344.9,1854.9 387.0,1529.7 50.9,0.0 1557.6,0.0 1606.0,1496.9 1351.9,1920.0 1322.6,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0068/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07988166165225,42.77263414263819]}},{"type":"Feature","properties":{"resourceCoords":[1632.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07587827975937,42.77305321498505]}},{"type":"Feature","properties":{"resourceCoords":[1632.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07521135407197,42.76957143977981]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07921473596485,42.76915236743295]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p69","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0069","type":"ImageService3","width":1627,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"291.6,1389.5 245.3,1052.9 246.2,894.0 224.4,796.1 170.9,798.4 243.4,754.1 239.8,311.2 210.4,198.2 937.4,180.2 862.2,1779.9 643.8,1920.0 409.3,1920.0 414.4,1743.4 291.6,1389.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0069/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07571004681282,42.77094355978722]}},{"type":"Feature","properties":{"resourceCoords":[1627.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07201222844661,42.76976056579661]}},{"type":"Feature","properties":{"resourceCoords":[1627.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07390059821167,42.76653453560945]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07759841657787,42.76771752960006]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p7","metadata":[{"label":"streets","value":"17"},{"label":"intersections","value":"25"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0007","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1024.5,333.0 1514.5,243.0 1499.4,1764.8 -0.0,1071.2 41.6,964.3 -0.0,951.5 65.2,947.6 589.5,600.6 582.5,578.8 1024.5,333.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1505.0,1072.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.089673,42.77276]}},{"type":"Feature","properties":{"resourceCoords":[219.0,839.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.092495,42.771586]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p70","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0070/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0070","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"645.8,1920.0 -0.0,1658.3 -0.0,52.6 697.9,42.6 1632.0,113.2 1632.0,1920.0 645.8,1920.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0070/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07369969779889,42.77004537846491]}},{"type":"Feature","properties":{"resourceCoords":[1632.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07007982500222,42.768734881308674]}},{"type":"Feature","properties":{"resourceCoords":[1632.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07216528282976,42.76558647967471]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07578515562642,42.76689697683094]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p71","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0071/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0071","type":"ImageService3","width":1627,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1627.0,0.0 1627.0,879.6 857.4,1917.2 121.5,1445.7 111.4,1475.1 118.2,16.6 1627.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0071/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[543.0,1697.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.074282,42.77014]}},{"type":"Feature","properties":{"resourceCoords":[1201.0,1446.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.072774,42.770804]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0072/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p72","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0072/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0072","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"230.1,571.3 -0.0,305.7 -0.0,-0.0 1260.0,0.0 1095.8,1835.3 329.5,1868.7 230.1,571.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0072/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[280.0,1284.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.072774,42.770804]}},{"type":"Feature","properties":{"resourceCoords":[1575.0,1814.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.07069,42.768768]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p73","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0073/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0073","type":"ImageService3","width":1627,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"482.1,1815.8 -0.0,1883.3 -0.0,-0.0 1627.0,0.0 1627.0,1257.7 1148.5,1190.7 1103.6,1795.7 482.1,1815.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0073/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0690304344971,42.77192627011783]}},{"type":"Feature","properties":{"resourceCoords":[1627.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06582338191103,42.77019757841198]}},{"type":"Feature","properties":{"resourceCoords":[1627.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06858287018461,42.76739974129052]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07178992277068,42.76912843299637]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0074/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p74","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0074/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0074","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"669.6,1091.7 662.6,1159.4 578.2,1147.8 555.4,1075.0 669.6,1091.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0074/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08076235976881,42.77546103779195]}},{"type":"Feature","properties":{"resourceCoords":[1632.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08140276188705,42.77898389917553]}},{"type":"Feature","properties":{"resourceCoords":[1632.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07579572162143,42.77954079862488]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0751553195032,42.7760179372413]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p8","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"9"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0008","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"373.9,214.7 1623.0,486.8 1623.0,914.9 1411.3,961.6 1402.4,1181.5 1623.0,1189.3 1623.0,1920.0 368.1,1920.0 373.9,214.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[255.0,644.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.091709,42.770319]}},{"type":"Feature","properties":{"resourceCoords":[1316.0,423.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.089601,42.77157]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0080__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p80 [3]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"2991.6"},{"label":"split_canvas_y","value":"4262.8"},{"label":"split_canvas_w","value":"3536.4"},{"label":"split_canvas_h","value":"3417.2"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0080__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0080","type":"ImageService3","width":1632,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1632.0,1065.7 747.9,1070.9 748.6,1920.0 1632.0,1920.0 1632.0,1065.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0080__3/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[747.9,1065.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07010831285908,42.79162146154874]}},{"type":"Feature","properties":{"resourceCoords":[1632.0,1065.7],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06954746889218,42.7900495346598]}},{"type":"Feature","properties":{"resourceCoords":[1632.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07161199864895,42.789650969863445]}},{"type":"Feature","properties":{"resourceCoords":[747.9,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07217284261584,42.79122289675239]}},{"type":"Feature","properties":{"resourceCoords":[901.8,1459.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.070962,42.791164]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Haverhill, Massachusetts | 1906 | sanborn03745_003 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:22:18Z","modified":"2026-09-21T19:22:18Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0009","type":"ImageService3","width":1623,"height":1920},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"304.9,1227.8 230.9,883.0 1623.0,325.1 1623.0,977.1 1495.5,1245.6 1336.0,1242.0 1262.6,1694.6 1623.0,1753.1 1623.0,1920.0 -0.0,1920.0 -0.0,1698.3 212.1,1643.7 194.4,1212.8 304.9,1227.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764hm:g037451906:03745_1906-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.09054647637677,42.77357999676654]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08691438446392,42.77483203160149]}},{"type":"Feature","properties":{"resourceCoords":[1623.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08491075631737,42.771655731443275]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1920.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.08854284823022,42.77040369660833]}}]}}]}