{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03769_002.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Lowell, Massachusetts | 1907 | 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":"95"},{"label":"placed","value":"80"},{"label":"unplaced","value":"15"},{"label":"fit sources","value":"georef 46, georef-snap 36, snap:0 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 14 panels"},{"label":"unplaced pages","value":"p0 (tier 4, 42.63774,-71.32842 +/-5291m); p37 (tier 1, 42.62341,-71.31767 +/-256m); p72__1 (tier 1, 42.63588,-71.35635 +/-173m); p72__2 (tier 3, 42.62508,-71.33332 +/-2426m); p72__3 (tier 1, 42.63525,-71.36100 +/-100m); p75__2 (tier 1, 42.63979,-71.38708 +/-100m); p76__1 (tier 4, 42.63774,-71.32842 +/-5291m); p76__2 (tier 4, 42.63774,-71.32842 +/-5291m); p76__3 (tier 4, 42.63774,-71.32842 +/-5291m); p80__1 (tier 4, 42.63774,-71.32842 +/-5291m); p82__2 (tier 1, 42.63014,-71.32258 +/-113m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p1","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0001/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0001","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"86.8,1616.0 -0.0,1593.5 -0.0,-0.0 968.2,0.0 1193.1,277.6 1373.2,133.7 1370.9,590.5 1543.0,505.5 1512.5,1949.0 -0.0,1949.0 -0.0,1698.2 86.8,1616.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0001/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3383986662069,42.64549457823259]}},{"type":"Feature","properties":{"resourceCoords":[1667.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33443858182636,42.646252490293094]}},{"type":"Feature","properties":{"resourceCoords":[1667.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3332423433835,42.64282277569916]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33720242776404,42.64206486363865]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0010","type":"ImageService3","width":1672,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"171.4,1426.0 163.8,319.2 938.2,273.2 1236.9,206.4 1194.3,0.0 1672.0,0.0 1672.0,1500.9 1489.4,1475.5 1537.7,1691.8 171.4,1426.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3254934070641,42.645736879081795]}},{"type":"Feature","properties":{"resourceCoords":[1672.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3217163784994,42.64691385198651]}},{"type":"Feature","properties":{"resourceCoords":[1672.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31986427682762,42.64365245967859]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32364130539231,42.642475486773876]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p11","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0011/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0011","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1587.5,67.6 997.0,1749.8 131.8,1861.7 205.9,491.7 -0.0,567.6 -0.0,0.0 1571.5,-0.0 1587.5,67.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[519.0,666.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3206303,42.643352]}},{"type":"Feature","properties":{"resourceCoords":[790.0,1191.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3217157,42.6426252]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p12","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0012","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1276.2,1087.5 1402.4,1064.8 1579.2,1949.0 745.8,1767.6 681.0,1876.3 46.1,1703.1 440.3,430.9 420.4,363.7 -0.0,386.9 0.0,0.0 1075.0,-0.0 1276.2,1087.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[960.0,1071.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3197871,42.640586]}},{"type":"Feature","properties":{"resourceCoords":[368.0,1792.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.321828,42.64137]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p13","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0013","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1668.0,1949.0 171.6,1949.0 136.2,1694.7 141.4,284.4 1668.0,154.8 1668.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0013/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[137.0,798.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3270964,42.6429972]}},{"type":"Feature","properties":{"resourceCoords":[1599.0,158.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3251013,42.6405411]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p14","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0014","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"81.2,270.5 1539.5,534.4 1555.8,1871.1 64.8,1742.2 81.2,270.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[350.0,860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.33104,42.641883]}},{"type":"Feature","properties":{"resourceCoords":[82.0,860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.331245,42.642344]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0015","type":"ImageService3","width":1666,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"51.1,127.8 1666.0,0.0 1666.0,227.7 1580.0,216.5 1579.5,1231.1 1196.1,1077.3 1046.0,1935.5 52.0,1741.2 51.1,127.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0015/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3326739147462,42.63944309172405]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32872996702343,42.6401271569835]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32764974937002,42.636709007129895]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33159369709279,42.63602494187044]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p16","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"8"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0016/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0016","type":"ImageService3","width":1666,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,209.9 91.1,222.2 85.3,0.0 1575.3,172.7 1578.5,0.0 1593.5,59.9 1666.0,84.7 1666.0,801.4 1535.2,758.4 1473.5,1295.2 1279.5,1905.8 -0.0,1389.5 -0.0,209.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0016/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[962.0,1783.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.325646,42.6373417]}},{"type":"Feature","properties":{"resourceCoords":[1181.0,1178.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.325459,42.6384932]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0017","type":"ImageService3","width":1670,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1548.8,914.8 1670.0,954.5 1670.0,1284.0 386.1,1332.5 310.1,1024.1 233.7,1017.2 52.8,261.6 1580.7,256.2 1548.8,914.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32563408242241,42.64247264901651]}},{"type":"Feature","properties":{"resourceCoords":[1670.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3215502942832,42.64243648256848]}},{"type":"Feature","properties":{"resourceCoords":[1670.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32160727087933,42.63890576240885]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32569105901854,42.63894192885688]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p18","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0018","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1518.5,1213.3 628.2,1540.7 370.1,1584.6 93.4,1565.5 161.7,921.6 63.0,0.0 1467.3,0.0 1441.8,674.9 1123.3,662.8 866.5,764.7 820.0,992.1 1451.1,1128.0 1518.5,1213.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0018/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[820.0,992.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3230947,42.6383112]}},{"type":"Feature","properties":{"resourceCoords":[1219.0,1331.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3221069,42.6377256]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p19","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"18"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0019","type":"ImageService3","width":1656,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"753.5,64.0 1433.3,81.0 1434.9,1874.8 648.5,1697.9 649.9,1379.6 580.5,1383.2 192.0,1940.6 -0.0,1815.0 -0.0,1541.9 127.3,1253.7 -0.0,1197.5 -0.0,287.1 643.8,299.6 753.5,64.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1053.0,650.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3193527,42.6377974]}},{"type":"Feature","properties":{"resourceCoords":[1053.0,72.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3180486,42.6382073]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p2","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0002","type":"ImageService3","width":1672,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"193.2,1949.0 -0.0,1929.8 -0.0,318.0 1504.9,272.8 1516.0,1824.0 199.0,1824.0 193.2,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[199.0,1824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.335876,42.639512]}},{"type":"Feature","properties":{"resourceCoords":[1516.0,1824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.332739,42.640039]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p20","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0020/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0020","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 1665.0,0.0 1665.0,1394.5 1642.5,1298.7 1261.5,1385.8 941.8,1696.9 568.0,1640.2 240.1,1535.0 243.6,896.8 -0.0,860.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0020/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31966773536293,42.64001829627577]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3159808757877,42.64113101233791]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31422268848839,42.63793380340454]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31790954806361,42.636821087342405]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p21","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"20"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0021/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0021","type":"ImageService3","width":1656,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"83.4,1949.0 122.7,1636.0 59.3,0.0 1605.9,231.2 1337.9,1099.6 1643.7,1113.8 1544.6,1948.5 1304.4,1880.6 1286.8,1949.0 83.4,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0021/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[529.0,1651.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3296785,42.6336348]}},{"type":"Feature","properties":{"resourceCoords":[1319.0,192.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.328449,42.636503]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p22","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"23"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0022/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0022","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"928.9,729.3 814.7,178.9 1659.0,0.0 1659.0,406.3 1507.3,467.0 1501.6,1835.5 478.1,1862.3 152.4,1169.8 24.1,769.1 928.9,729.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[266.0,1422.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3262944,42.6351479]}},{"type":"Feature","properties":{"resourceCoords":[1498.0,1498.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.325646,42.6373417]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p23","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"20"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0023/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0023","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1079.7,106.0 1664.0,219.3 1664.0,923.1 1480.3,864.5 1473.7,1564.6 1059.3,1601.3 1088.9,1863.4 116.9,1529.1 183.9,1264.3 186.6,1006.5 86.7,397.4 889.6,415.3 833.8,141.6 1079.7,106.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[622.0,1706.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.324993,42.6362946]}},{"type":"Feature","properties":{"resourceCoords":[188.0,1121.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3238014,42.6372792]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p24","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"13"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0024/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0024","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1557.5 -0.0,857.9 184.1,914.7 177.5,211.4 835.7,334.9 819.9,570.9 1548.5,1042.8 1075.6,1791.8 708.3,1494.8 -0.0,1557.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[549.0,272.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.320856,42.634312]}},{"type":"Feature","properties":{"resourceCoords":[1387.0,1295.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3229269,42.6324613]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p25","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0025/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0025","type":"ImageService3","width":1662,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,335.9 0.0,0.0 34.0,108.0 383.0,83.8 666.7,19.7 1662.0,612.8 1662.0,1880.5 674.4,1743.3 430.6,1793.0 52.6,323.5 -0.0,335.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0025/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31693941495772,42.637751586323006]}},{"type":"Feature","properties":{"resourceCoords":[1662.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31633213960113,42.63477529322949]}},{"type":"Feature","properties":{"resourceCoords":[1662.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32104320138126,42.634247693949675]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32165047673784,42.63722398704319]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p26","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0026/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0026","type":"ImageService3","width":1656,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"93.0,1457.8 10.5,1343.0 1287.9,317.6 1414.4,1444.8 1656.0,1419.2 1656.0,1674.9 163.7,1787.3 93.0,1457.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0026/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32015496676898,42.635387907556755]}},{"type":"Feature","properties":{"resourceCoords":[1656.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31662964266275,42.6368355466931]}},{"type":"Feature","properties":{"resourceCoords":[1656.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31432998380869,42.63376158136412]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31785530791493,42.632313942227775]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p27","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0027/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0027","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1432.2,0.0 1437.1,0.0 1663.0,0.0 1663.0,1902.2 1642.6,1897.5 1641.9,1949.0 -0.0,1949.0 -0.0,826.9 268.6,653.4 338.7,372.6 477.7,41.0 913.2,225.6 1270.9,0.0 1432.2,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0027/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[653.0,116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.316733,42.6377544]}},{"type":"Feature","properties":{"resourceCoords":[1495.0,1864.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3125419,42.6360401]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p28","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0028/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0028","type":"ImageService3","width":1677,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.8,1152.0 112.8,420.6 222.1,421.4 247.3,165.3 1677.0,155.1 1677.0,1666.6 77.8,1152.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0028/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31567450129543,42.63458913982869]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31233705989544,42.63629636012587]}},{"type":"Feature","properties":{"resourceCoords":[1677.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.30965902230683,42.633422642451926]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31299646370682,42.63171542215475]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p29","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0029/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0029","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1664.0,45.0 1664.0,1949.0 724.6,1949.0 547.8,1779.9 -0.0,1924.2 -0.0,-0.0 1664.0,-0.0 1663.3,45.0 1664.0,45.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0029/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.30946101792193,42.63397002817726]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.30829365131777,42.63110240063618]}},{"type":"Feature","properties":{"resourceCoords":[1664.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31282696519341,42.63008934976955]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31399433179757,42.63295697731063]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p3","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0003","type":"ImageService3","width":1666,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"784.1,1777.0 870.1,1949.0 -0.0,1949.0 -0.0,85.3 222.7,564.3 1243.4,188.4 1230.0,1025.2 1666.0,993.6 1666.0,1791.6 784.1,1777.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0003/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33067455062258,42.647476933919734]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32967335331207,42.644546542363614]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33430133686957,42.64367892705694]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33530253418007,42.64660931861306]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p30","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0030/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0030","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1590.2,242.8 1586.8,1949.0 -0.0,1949.0 165.1,1923.5 -0.0,0.0 1665.0,-0.0 1665.0,124.7 1374.5,139.0 1378.1,219.1 1590.2,242.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0030/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.30829967842439,42.63110231316836]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.30745878798945,42.62814513066098]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31213066336055,42.62741580499927]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31297155379549,42.630372987506654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p31","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0031/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0031","type":"ImageService3","width":1656,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"84.9,1949.0 98.9,1599.1 462.9,189.9 440.8,65.2 358.0,101.5 144.4,0.0 1314.7,0.0 1499.0,977.0 1376.0,1043.7 1502.2,1949.0 84.9,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0031/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32064153229628,42.63175145965792]}},{"type":"Feature","properties":{"resourceCoords":[1656.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31709255244368,42.63309916513414]}},{"type":"Feature","properties":{"resourceCoords":[1656.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31495177719935,42.63000438025472]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31850075705195,42.6286566747785]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0032/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p32","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0032/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0032","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1414.2,1409.0 347.8,1949.0 -0.0,1949.0 -0.0,1022.2 130.7,973.2 90.8,62.3 1490.0,107.1 1414.2,1409.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0032/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31796352188985,42.63270987945364]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31468293601685,42.6344162727746]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31198048910058,42.63156421844444]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31526107497358,42.62985782512348]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p33","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0033/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0033","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"902.5,0.0 985.3,262.9 1167.2,205.8 1664.0,783.1 1484.0,685.9 896.0,1949.0 0.0,1949.0 0.0,1837.6 144.7,1838.3 146.0,920.0 57.9,518.5 0.0,509.0 0.0,0.0 902.5,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0033/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[146.0,920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.316983,42.626714]}},{"type":"Feature","properties":{"resourceCoords":[688.0,1834.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.314493,42.627283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p34","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0034/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0034","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"346.5,943.6 182.6,0.0 810.9,465.6 1661.0,1191.7 1661.0,1949.0 -0.0,1949.0 -0.0,1776.0 248.5,1269.2 346.5,943.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0034/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31380706998746,42.63196301684853]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31058487852516,42.630085668030524]}},{"type":"Feature","properties":{"resourceCoords":[1661.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31355795095673,42.62728426728669]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31678014241903,42.629161616104696]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0035__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p35 [1]","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"20"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6616.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0035__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0035","type":"ImageService3","width":1654,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"851.0,1591.1 1575.5,1788.4 1572.6,1548.6 1633.0,1545.7 1605.8,524.9 1393.3,516.6 1410.5,51.2 804.8,525.8 631.4,301.4 217.3,1102.0 117.8,1050.5 64.0,1156.9 291.8,1280.8 145.1,1551.2 -0.0,1472.3 -0.0,1949.0 889.5,1949.0 851.0,1591.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0035__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[356.0,587.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.314584,42.6269842]}},{"type":"Feature","properties":{"resourceCoords":[433.0,434.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.314493,42.627283]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0035__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p35 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1241.2"},{"label":"split_canvas_h","value":"1225.6"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0035__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0035","type":"ImageService3","width":1654,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 -0.0,306.4 310.3,304.5 304.4,0.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0035__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31506292745851,42.625888208397754]}},{"type":"Feature","properties":{"resourceCoords":[310.3,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31432895363109,42.62574731993719]}},{"type":"Feature","properties":{"resourceCoords":[310.3,306.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31451745681917,42.62521280879442]}},{"type":"Feature","properties":{"resourceCoords":[0.0,306.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3152514306466,42.62535369725499]}},{"type":"Feature","properties":{"resourceCoords":[53.0,272.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.315105,42.625389]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p36","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0036/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0036","type":"ImageService3","width":1661,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,1165.4 60.5,1163.2 45.5,141.5 1546.0,213.1 1575.2,0.0 1661.0,0.0 1661.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1554.0,1158.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3074784,42.626551]}},{"type":"Feature","properties":{"resourceCoords":[43.0,486.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.311456,42.627033]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p38","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"14"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0038/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0038","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1555.2,200.3 1092.1,326.4 1327.4,1190.8 1665.0,1058.6 1665.0,1814.9 1194.9,1949.0 0.0,1949.0 -0.0,0.0 1665.0,0.0 1665.0,75.3 1589.1,57.4 1555.2,200.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0038/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[743.0,1300.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3122894,42.6237952]}},{"type":"Feature","properties":{"resourceCoords":[1275.0,42.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.315306,42.624795]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p39","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0039/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0039","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1305.3,225.6 1457.3,889.1 1464.5,1806.8 1201.5,1809.6 1202.2,1758.2 973.4,1755.8 957.2,1683.4 0.0,1898.2 0.0,0.0 343.9,0.0 322.4,167.2 1305.3,225.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0039/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[591.0,1808.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.315306,42.624795]}},{"type":"Feature","properties":{"resourceCoords":[1459.0,503.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.317902,42.626885]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0004","type":"ImageService3","width":1672,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1085.0 -0.0,0.0 1417.1,-0.0 1518.1,1844.8 450.9,1848.5 438.0,1046.2 -0.0,1085.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32979823686094,42.64530683873542]}},{"type":"Feature","properties":{"resourceCoords":[1672.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32886279762067,42.64237144192443]}},{"type":"Feature","properties":{"resourceCoords":[1672.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33348188972093,42.64156369202557]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3344173289612,42.64449908883656]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p40","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0040/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0040","type":"ImageService3","width":1670,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"762.5,775.2 711.0,420.8 655.2,439.6 602.6,16.6 1623.6,0.0 1670.0,98.7 1670.0,1949.0 909.7,1949.0 912.4,1875.8 -0.0,1562.7 -0.0,893.4 762.5,775.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0040/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32610450435018,42.623788748777805]}},{"type":"Feature","properties":{"resourceCoords":[1670.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32203488253137,42.6237036009653]}},{"type":"Feature","properties":{"resourceCoords":[1670.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32216898394064,42.62018406877007]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32623860575946,42.62026921658258]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p41","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0041/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0041","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,106.2 228.1,33.7 1293.9,57.7 1283.3,-0.0 1640.0,-0.0 1659.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0041/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32476360866767,42.62530505033072]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32429446970795,42.622315792149685]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32903366414462,42.62190738690918]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32950280310433,42.62489664509021]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p42","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"16"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0042/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0042","type":"ImageService3","width":1681,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"637.1,0.0 1137.2,0.0 1015.1,318.2 1681.0,631.2 1681.0,1949.0 1310.2,1949.0 1327.0,1757.7 1289.8,1655.6 281.3,1583.2 250.0,881.2 176.4,717.1 -0.0,727.2 -0.0,164.1 637.1,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[128.0,143.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.325225,42.6263159]}},{"type":"Feature","properties":{"resourceCoords":[260.0,991.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.324775,42.624796]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p43","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0043/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0043","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1488.4,1613.6 1568.5,1797.8 1658.0,1759.7 1658.0,1949.0 997.9,1949.0 750.9,1851.7 711.4,1949.0 106.3,1723.9 461.8,819.5 642.5,524.0 522.0,192.8 500.1,0.0 1200.3,0.0 1227.5,34.1 1488.4,1613.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0043/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32246765985366,42.6317846958224]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31841037042722,42.631996883062286]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31807372884356,42.628463081833885]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32213101827,42.628250894594]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p44","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0044/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0044","type":"ImageService3","width":1674,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"83.3,1611.5 89.2,117.2 734.4,104.9 735.4,0.0 1368.2,0.0 1420.2,753.3 1674.0,735.0 1674.0,1713.7 83.3,1611.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0044/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32203217137682,42.628924627154326]}},{"type":"Feature","properties":{"resourceCoords":[1674.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31811301619513,42.62801129237636]}},{"type":"Feature","properties":{"resourceCoords":[1674.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31954812244915,42.624630245680194]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32346727763084,42.625543580458164]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p45","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"16"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0045/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0045","type":"ImageService3","width":1664,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1473.0,1479.5 1295.1,1874.5 496.0,1514.7 475.8,1276.7 204.3,1259.2 69.8,9.4 796.3,338.1 862.5,213.5 1063.9,53.0 1548.7,1102.8 1543.6,1476.5 1473.0,1479.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0045/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1473.0,1480.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3212587,42.631975]}},{"type":"Feature","properties":{"resourceCoords":[1334.0,381.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.318595,42.6323117]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p46","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0046/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0046","type":"ImageService3","width":1655,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1390.0,355.2 1571.6,1391.0 41.6,1856.7 234.7,554.7 478.8,457.2 760.5,246.9 1061.0,325.6 1390.0,355.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0046/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.31980085734365,42.632169533099855]}},{"type":"Feature","properties":{"resourceCoords":[1655.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32069710374333,42.629227795569115]}},{"type":"Feature","properties":{"resourceCoords":[1655.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3253727925364,42.630009807591655]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32447654613672,42.632951545122395]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p47","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0047/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0047","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"607.6,1872.0 43.4,1874.6 39.6,202.8 -0.0,220.2 -0.0,0.0 1480.3,-0.0 1475.8,44.0 1339.0,47.7 1331.8,424.6 1484.4,1072.5 1659.0,1075.8 1659.0,1949.0 608.5,1949.0 607.6,1872.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0047/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32321882113035,42.62908125937899]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32290317571353,42.62610131185871]}},{"type":"Feature","properties":{"resourceCoords":[1659.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32762790256935,42.625826546293965]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32794354798617,42.628806493814245]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p48","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0048/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0048","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"740.9,1810.0 603.1,483.1 386.7,505.9 278.1,20.1 1329.2,44.4 820.9,1803.1 740.9,1810.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0048/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[452.0,1635.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3236633,42.6270039]}},{"type":"Feature","properties":{"resourceCoords":[814.0,605.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.322708,42.628851]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p49","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0049/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0049","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 -0.0,39.8 1524.5,51.0 1523.8,671.8 1331.4,670.5 1320.5,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1524.0,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3275595,42.631189]}},{"type":"Feature","properties":{"resourceCoords":[749.0,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.329464,42.631063]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0005","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,626.1 473.1,578.6 1479.5,674.7 1574.0,1199.7 1512.4,1949.0 892.2,1795.5 835.1,1949.0 167.8,1949.0 225.4,1800.1 -0.0,1713.0 -0.0,626.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33274828874534,42.647771995415624]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32938113446588,42.64948093541818]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32668050461572,42.64656135817086]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33004765889518,42.6448524181683]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p50","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0050/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0050","type":"ImageService3","width":1653,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1480.8,1794.9 761.9,1790.5 762.7,1596.5 141.3,1598.0 145.7,1048.7 262.1,211.6 864.2,211.2 1491.2,133.3 1480.8,1794.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0050/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3236945758511,42.63169554780492]}},{"type":"Feature","properties":{"resourceCoords":[1653.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32334357219895,42.628710342305006]}},{"type":"Feature","properties":{"resourceCoords":[1653.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32809401404987,42.62840370157998]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32844501770202,42.63138890707989]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p51","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"17"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0051/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0051","type":"ImageService3","width":1669,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"341.1,243.5 1497.4,278.1 1466.8,1414.5 1125.3,1746.9 835.2,1361.3 137.7,1069.2 341.1,243.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0051/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[623.0,1276.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.325799,42.633367]}},{"type":"Feature","properties":{"resourceCoords":[1125.0,1747.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3242776,42.6328405]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p52","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"21"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0052/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0052","type":"ImageService3","width":1673,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1243.5,475.4 1540.8,740.0 1523.2,1667.4 676.8,1560.8 122.3,1563.9 121.2,568.5 161.3,271.2 1133.5,426.2 1243.5,475.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0052/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[420.0,1217.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.326903,42.631845]}},{"type":"Feature","properties":{"resourceCoords":[937.0,399.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.325799,42.633367]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p53","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0053/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0053","type":"ImageService3","width":1654,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1887.1 236.0,1888.7 250.9,16.5 1416.0,25.0 1448.9,589.1 1299.7,1949.0 -0.0,1949.0 -0.0,1887.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0053/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33441272186776,42.634113764136934]}},{"type":"Feature","properties":{"resourceCoords":[1654.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33042621356758,42.63463920315559]}},{"type":"Feature","properties":{"resourceCoords":[1654.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32959053886853,42.63115879316359]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33357704716872,42.63063335414494]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p54","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0054/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0054","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1394.5,1607.5 226.1,1604.7 229.8,556.1 1418.4,411.2 1389.4,632.8 1394.5,1607.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0054/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1052.0,1260.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.328465,42.631776]}},{"type":"Feature","properties":{"resourceCoords":[226.0,1624.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.330442,42.631011]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0055/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p55","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0055/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0055","type":"ImageService3","width":1666,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"338.0,1949.0 356.1,204.1 1319.3,143.7 1400.1,1594.3 840.6,1588.2 847.6,1949.0 338.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0055/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1369.0,955.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3322726,42.6386114]}},{"type":"Feature","properties":{"resourceCoords":[340.0,1731.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.33443,42.636907]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p56","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0056/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0056","type":"ImageService3","width":1666,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"316.2,1691.7 308.4,367.1 822.6,361.5 810.7,0.0 1375.2,0.0 1488.3,1684.5 316.2,1691.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0056/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33522705748814,42.63708170180477]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3312259005551,42.637568040645405]}},{"type":"Feature","properties":{"resourceCoords":[1666.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33045794647649,42.63410016932927]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33445910340953,42.633613830488635]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0057/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p57","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0057/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0057","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,316.3 1128.2,487.1 1127.3,362.5 1473.0,356.5 1462.0,1949.0 158.6,1949.0 159.9,1583.8 -0.0,1581.6 -0.0,316.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0057/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1072.0,1886.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.335373,42.636786]}},{"type":"Feature","properties":{"resourceCoords":[698.0,1886.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.336277,42.636671]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p58","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"15"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0058/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0058","type":"ImageService3","width":1669,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"236.4,1127.4 168.2,1121.3 171.8,306.5 1470.6,306.9 1464.1,1779.6 237.9,1773.2 236.4,1127.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0058/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1082.0,244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.335373,42.636786]}},{"type":"Feature","properties":{"resourceCoords":[584.0,1779.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.335936,42.633893]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0059/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p59","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0059/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0059","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"245.9,1754.5 85.1,28.4 1599.1,32.4 1596.6,1600.3 1457.6,1623.6 1461.2,1908.3 1660.0,1908.4 1660.0,1949.0 -0.0,1949.0 -0.0,1774.2 245.9,1754.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0059/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3403294802521,42.63339470234988]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33633366219826,42.63390134701299]}},{"type":"Feature","properties":{"resourceCoords":[1660.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33553079952136,42.63042538189102]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3395266175752,42.62991873722792]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p6","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"18"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0006","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1581.5,642.6 1575.6,1903.5 275.8,1769.0 270.2,502.1 897.0,253.1 894.1,87.0 1533.9,4.0 1581.5,642.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1573.0,514.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.326615,42.6455256]}},{"type":"Feature","properties":{"resourceCoords":[735.0,1816.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3278918,42.6429208]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p60","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0060/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0060","type":"ImageService3","width":1666,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"272.3,1639.8 277.9,66.6 1382.0,65.8 1375.6,1949.0 136.7,1949.0 133.7,1663.3 272.3,1639.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0060/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[872.0,1716.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.334347,42.631076]}},{"type":"Feature","properties":{"resourceCoords":[1030.0,66.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.334651,42.634056]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p61","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0061/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0061","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"140.6,1949.0 141.2,1871.2 8.3,1869.3 -0.0,1628.8 145.2,1637.4 156.7,979.2 -0.0,960.6 -0.0,-0.0 1155.3,0.0 1045.4,605.3 1311.7,653.7 1301.6,1887.4 508.9,1876.3 507.9,1949.0 140.6,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0061/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[520.0,1024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.340361,42.63834]}},{"type":"Feature","properties":{"resourceCoords":[1469.0,1153.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.338025,42.638416]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0062/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p62","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"11"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0062/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0062","type":"ImageService3","width":1659,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 132.8,0.0 133.3,77.8 500.3,72.7 500.3,0.0 1292.7,0.0 1292.9,37.5 1453.5,38.7 1455.7,1226.5 1524.5,1232.2 1530.0,1883.0 -0.0,1891.4 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0062/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[135.0,1234.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3404,42.634534]}},{"type":"Feature","properties":{"resourceCoords":[1530.0,1883.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3367778,42.6337964]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0063/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p63","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0063/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0063","type":"ImageService3","width":1666,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"853.5,51.0 1666.0,17.4 1666.0,1949.0 -0.0,1949.0 -0.0,295.2 826.1,246.6 853.5,51.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0063/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[713.0,1056.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3432575,42.6383293]}},{"type":"Feature","properties":{"resourceCoords":[853.0,51.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.341253,42.638302]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0064/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p64","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0064/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0064","type":"ImageService3","width":1657,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 1398.6,0.0 1393.1,64.5 1536.6,77.5 1555.0,1820.2 1308.5,1820.5 1298.0,1949.0 -0.0,1949.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0064/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[886.0,171.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.341598,42.632918]}},{"type":"Feature","properties":{"resourceCoords":[679.0,1405.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3413414,42.6306743]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0065/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p65","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0065/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0065","type":"ImageService3","width":1668,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1826.3 -0.0,-0.0 1414.7,-0.0 1255.2,1818.9 -0.0,1826.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0065/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3319972404948,42.6589934509088]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32881409568864,42.65709918854093]}},{"type":"Feature","properties":{"resourceCoords":[1668.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33180265854796,42.654344543032565]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33498580335412,42.656238805400434]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0066/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p66","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0066/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0066","type":"ImageService3","width":1674,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1470.8,-0.0 1560.5,92.8 1408.5,238.2 1404.2,448.7 1456.8,563.3 1434.3,1862.3 1674.0,1902.2 1674.0,1949.0 881.9,1949.0 907.0,1846.9 -0.0,1921.5 0.0,0.0 1470.8,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0066/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1440.0,1206.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.328656,42.6541484]}},{"type":"Feature","properties":{"resourceCoords":[790.0,609.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3288,42.655723]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p67","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0067/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0067","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"95.7,1774.3 98.7,1949.0 -0.0,1949.0 -0.0,-0.0 1432.5,18.1 1402.0,1924.6 95.7,1774.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0067/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1583.0,522.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.333579,42.654547]}},{"type":"Feature","properties":{"resourceCoords":[1058.0,358.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.33435,42.655357]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p68","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0068/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0068","type":"ImageService3","width":1662,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,3.2 1266.6,6.3 1256.2,109.4 1289.9,112.3 1072.4,1934.2 -0.0,1912.1 -0.0,3.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0068/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[705.0,893.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.333128,42.653392]}},{"type":"Feature","properties":{"resourceCoords":[159.0,352.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.333346,42.654762]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p69","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0069/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0069","type":"ImageService3","width":1663,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1194.1,1949.0 1183.5,1819.3 688.1,1823.2 690.0,1911.5 59.1,1859.4 54.4,575.2 -0.0,463.5 -0.0,254.2 147.1,107.4 38.1,-0.0 1663.0,-0.0 1663.0,1949.0 1194.1,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0069/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32664654220498,42.65576818799418]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32376440881272,42.65363377236497]}},{"type":"Feature","properties":{"resourceCoords":[1663.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32714183371807,42.6511320071613]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33002396711034,42.65326642279051]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0007","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1028.4,1592.1 514.5,1745.1 517.7,1949.0 -0.0,1949.0 0.0,0.0 1418.1,-0.0 1453.0,111.0 1605.5,97.6 1642.3,1569.4 1028.4,1592.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32565619945663,42.65058307496652]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32374568879698,42.64792865203548]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32794053967682,42.64627212601837]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32985105033647,42.648926548949404]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p70","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0070/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0070","type":"ImageService3","width":1671,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"33.6,127.3 783.6,112.2 783.0,66.0 1176.4,88.3 1175.2,-0.0 1671.0,-0.0 1671.0,1949.0 -0.0,1949.0 33.6,127.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0070/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33066435857185,42.65403967627427]}},{"type":"Feature","properties":{"resourceCoords":[1671.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32774810574476,42.65191401137041]}},{"type":"Feature","properties":{"resourceCoords":[1671.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33109546205226,42.649394659604624]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33401171487935,42.65152032450849]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p71","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"15"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0071/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0071","type":"ImageService3","width":1657,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.4,0.0 1515.0,744.0 1510.8,1186.1 1498.7,1184.5 1390.7,1949.0 446.2,1949.0 247.4,1788.0 116.0,1949.0 0.0,1949.0 -0.0,0.0 1613.4,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0071/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[860.0,1007.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.336576,42.650058]}},{"type":"Feature","properties":{"resourceCoords":[1507.0,1007.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.334684,42.651926]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p73","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0073/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0073","type":"ImageService3","width":1658,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1591.2,57.3 1545.1,1859.0 1658.0,1857.5 1658.0,1949.0 -0.0,1949.0 -0.0,-0.0 732.3,0.0 733.5,42.7 1591.2,57.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0073/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.38484782847483,42.636229811052566]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.38174276373009,42.6382446762883]}},{"type":"Feature","properties":{"resourceCoords":[1658.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.37854582278148,42.63554048957071]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.38165088752622,42.63352562433497]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0074/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p74","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0074/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0074","type":"ImageService3","width":1665,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"23.0,1949.0 97.4,0.0 1665.0,0.0 1665.0,1949.0 23.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0074/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.38215593574398,42.638144893385565]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.37910615933696,42.64017571684085]}},{"type":"Feature","properties":{"resourceCoords":[1665.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.37589734345949,42.63753093060675]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.37894711986651,42.635500107151465]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0075__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p75 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6640.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0075__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0075","type":"ImageService3","width":1660,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1485.3 -0.0,1802.3 221.2,1800.3 222.5,1843.0 1078.3,1849.7 1080.7,1722.7 1660.0,1709.9 1660.0,546.6 1185.5,545.8 1177.5,0.0 599.9,0.0 0.0,0.0 0.0,1485.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0075__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1394.0,1734.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.381366,42.638626]}},{"type":"Feature","properties":{"resourceCoords":[212.0,1504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.383979,42.637521]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0077/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p77","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0077/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0077","type":"ImageService3","width":1657,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 0.0,0.0 1657.0,0.0 1657.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0077/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.35166745253929,42.6844431836445]}},{"type":"Feature","properties":{"resourceCoords":[1657.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.34778491282185,42.683967385645495]}},{"type":"Feature","properties":{"resourceCoords":[1657.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.34854087216488,42.680586591396995]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.35242341188231,42.68106238939599]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0078/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p78","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0078/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0078","type":"ImageService3","width":1648,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 1648.0,-0.0 1648.0,1949.0 -0.0,1949.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0078/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32157866563283,42.66594513073976]}},{"type":"Feature","properties":{"resourceCoords":[1648.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3205261950365,42.66303467566766]}},{"type":"Feature","properties":{"resourceCoords":[1648.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32517426791011,42.662112938274944]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32622673850643,42.66502339334704]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0079/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p79","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0079/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0079","type":"ImageService3","width":1656,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1949.0 0.0,0.0 1304.6,0.0 1325.5,69.0 1656.0,0.0 1656.0,1949.0 -0.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0079/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32703076803517,42.62119438894163]}},{"type":"Feature","properties":{"resourceCoords":[1656.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32319666631297,42.62012862526495]}},{"type":"Feature","properties":{"resourceCoords":[1656.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32488927298726,42.61678458490992]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32872337470947,42.61785034858661]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p8","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"13"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0008/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0008","type":"ImageService3","width":1672,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"174.4,152.1 145.1,16.1 -0.0,24.1 -0.0,0.0 1260.2,-0.0 1231.8,152.6 1443.0,149.5 1454.3,455.4 1358.3,1224.2 1308.0,1577.0 1203.0,1891.2 566.8,1685.4 229.5,1614.3 327.1,153.6 174.4,152.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[859.0,1770.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.326615,42.6455256]}},{"type":"Feature","properties":{"resourceCoords":[567.0,1685.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.326838,42.6460515]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0080__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p80 [2]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6596.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0080__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0080","type":"ImageService3","width":1649,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 0.0,880.4 633.1,880.3 633.2,1949.0 732.0,1949.0 1649.0,1949.0 1649.0,-0.0 -0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0080__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[886.0,654.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3635155,42.6355149]}},{"type":"Feature","properties":{"resourceCoords":[1409.0,1728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.365704,42.634137]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0081/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p81","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0081/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0081","type":"ImageService3","width":1653,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1653.0,-0.0 1653.0,1949.0 -0.0,1949.0 0.0,0.0 1653.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0081/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.34093856436833,42.648403392900285]}},{"type":"Feature","properties":{"resourceCoords":[1653.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.33998095131375,42.645645145637786]}},{"type":"Feature","properties":{"resourceCoords":[1653.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.3443713979456,42.64480878704661]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.34532901100017,42.647567034309105]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0082__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p82 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6548.0"},{"label":"split_canvas_h","value":"7796.0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0082__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0082","type":"ImageService3","width":1637,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"470.0,1949.0 692.0,1949.0 1244.6,1949.0 812.1,150.0 812.2,789.6 0.0,795.7 -0.0,1949.0 470.0,1949.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0082__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1418.0,1799.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.335876,42.639512]}},{"type":"Feature","properties":{"resourceCoords":[379.0,1031.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.3383712,42.6408683]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lowell, Massachusetts | 1907 | sanborn03769_002 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T19:11:48Z","modified":"2026-09-21T19:11:48Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0009","type":"ImageService3","width":1667,"height":1949},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"649.6,109.9 992.3,1.1 1520.3,1932.7 466.0,1790.5 317.8,152.4 649.6,109.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764lm:g03769190701:03769_01_1907-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32721196738004,42.64508340434351]}},{"type":"Feature","properties":{"resourceCoords":[1667.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32319427751652,42.64548079303483]}},{"type":"Feature","properties":{"resourceCoords":[1667.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32256707655864,42.642001126078775]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1949.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.32658476642216,42.641603737387456]}}]}}]}