{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03774_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Malden, Massachusetts | 1887 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"18"},{"label":"placed","value":"14"},{"label":"unplaced","value":"4"},{"label":"fit sources","value":"georef 12, georef-snap 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 14 panels"},{"label":"unplaced pages","value":"p1 (tier 1, 42.41649,-71.05812 +/-127m); p5__1 (tier 1, 42.42901,-71.07021 +/-116m); p7__2 (tier 1, 42.41840,-71.07740 +/-109m); p8__2 (tier 1, 42.42890,-71.06831 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0010__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p10 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0010__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1383.7,1913.0 1353.8,1431.0 1404.5,1428.2 1613.0,972.0 1613.0,939.3 1159.0,940.6 1159.1,0.0 -0.0,-0.0 -0.0,1913.0 1383.7,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0010__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1113.0,1418.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0750118,42.4272425]}},{"type":"Feature","properties":{"resourceCoords":[746.0,337.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.076276,42.429107]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0010__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p10 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"4636.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1816.0"},{"label":"split_canvas_h","value":"3762.4"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0010__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1159.1,64.4 1159.0,940.6 1613.0,939.3 1613.0,0.0 1183.7,0.0 1183.9,64.0 1159.1,64.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0010__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1159.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07400903377511,42.41802223912508]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0717571685772,42.418221526179174]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,940.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07119851722106,42.41478565341699]}},{"type":"Feature","properties":{"resourceCoords":[1159.0,940.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07345038241898,42.4145863663629]}},{"type":"Feature","properties":{"resourceCoords":[1536.2,39.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0721151,42.4180454]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1126.4 50.6,1126.9 327.5,584.0 329.2,0.0 1302.3,0.0 1303.9,319.6 1512.2,319.1 1509.7,1532.0 1444.5,1861.8 1215.2,1829.2 1182.5,1913.0 -0.0,1913.0 -0.0,1126.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07497377007022,42.42931731003201]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07104702674594,42.42990964213]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07010196276235,42.42644787560368]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07402870608662,42.42585554350569]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p3","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0003/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"22.6,12.6 1613.0,0.0 1613.0,1720.1 1472.1,1913.0 1297.3,1913.0 712.2,1555.7 83.5,1343.3 22.6,12.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1019.0,1729.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0683044,42.4266953]}},{"type":"Feature","properties":{"resourceCoords":[84.0,1343.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0705418,42.4270994]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0004/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,525.5 227.3,481.6 167.4,147.9 780.8,148.6 1530.3,319.9 1422.4,903.6 1428.7,969.2 1474.1,965.6 1484.5,1185.3 1592.0,1555.0 860.0,1913.0 -0.0,1913.0 -0.0,525.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07088558808407,42.42741868769083]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0669719157891,42.4269120776844]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06778017847208,42.42346169791577]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07169385076705,42.4239683079222]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0005__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p5 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0005__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1719.3 1613.0,-0.0 421.1,-0.0 192.3,493.8 30.2,521.5 46.4,668.1 148.1,850.0 84.4,988.7 191.8,918.6 333.2,1135.2 354.6,1159.4 369.2,1159.2 414.2,1226.8 576.7,1410.5 603.6,1376.9 762.9,1512.5 1039.1,1657.1 1502.1,1781.0 1524.6,1694.9 1613.0,1719.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0005__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[365.0,1175.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0676189,42.4258119]}},{"type":"Feature","properties":{"resourceCoords":[30.0,522.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0666736,42.4270406]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p6 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"5318.4"},{"label":"split_canvas_w","value":"1779.2"},{"label":"split_canvas_h","value":"2333.6"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"442.6,1913.0 444.8,1330.2 0.0,1329.6 -0.0,1913.0 442.6,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,1329.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06919873412355,42.42002476145349]}},{"type":"Feature","properties":{"resourceCoords":[444.8,1329.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06698458458956,42.4201231532379]}},{"type":"Feature","properties":{"resourceCoords":[444.8,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06680956155223,42.4179793928551]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06902371108622,42.41788100107069]}},{"type":"Feature","properties":{"resourceCoords":[336.9,1820.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0673748,42.4182969]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0006__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p6 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0006__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1206.0,1913.0 1491.0,1913.0 1613.0,1913.0 1613.0,0.0 -0.0,-0.0 0.0,1329.6 444.8,1330.2 442.6,1913.0 1206.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0006__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[649.0,1061.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.075336,42.421695]}},{"type":"Feature","properties":{"resourceCoords":[212.0,196.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0766565,42.4233654]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0007__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p7 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,745.3 798.2,737.0 800.7,0.0 -0.0,0.0 -0.0,1913.0 1613.0,1913.0 1613.0,745.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1139.0,1566.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0776629,42.4176541]}},{"type":"Feature","properties":{"resourceCoords":[1139.0,739.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0756706,42.4176445]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p8 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4640.8"},{"label":"split_canvas_h","value":"3188.8"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 0.0,681.1 1156.8,797.2 1158.0,525.5 1160.2,0.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[268.1,545.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.057087,42.429648]}},{"type":"Feature","properties":{"resourceCoords":[680.1,545.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0561224,42.4299248]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0008__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p8 [3]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2097.6"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"5554.4"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0008__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,524.4 1158.0,525.5 1156.8,797.2 0.0,681.1 -0.0,1872.7 1550.1,1867.3 1469.2,1733.3 1613.0,1634.4 1613.0,524.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0008__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1338.0,1284.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0656294,42.4273962]}},{"type":"Feature","properties":{"resourceCoords":[274.0,1284.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0660133,42.4293034]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p9 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1122.5 800.8,1122.1 795.5,735.9 788.9,213.0 588.2,189.9 584.3,230.1 455.0,219.4 473.1,0.0 -0.0,-0.0 -0.0,1913.0 1613.0,1913.0 1613.0,1122.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[207.0,712.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0717394,42.4314293]}},{"type":"Feature","properties":{"resourceCoords":[562.0,1408.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0705393,42.4303207]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p9 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"3144.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3307.2"},{"label":"split_canvas_h","value":"2960.4"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,493.4 1522.3,494.6 1518.5,22.2 1510.5,61.0 786.8,49.0 795.5,735.9 1613.0,740.1 1613.0,493.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[891.2,61.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0691875,42.4237557]}},{"type":"Feature","properties":{"resourceCoords":[1510.0,61.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.06768,42.424114]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Malden, Massachusetts | 1887 | sanborn03774_001 p9 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"3182.0"},{"label":"split_canvas_y","value":"2943.6"},{"label":"split_canvas_w","value":"3270.0"},{"label":"split_canvas_h","value":"1546.4"}],"created":"2026-09-22T09:06:56Z","modified":"2026-09-22T09:06:56Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,997.5 1574.0,997.0 1582.3,740.0 795.5,735.9 800.8,1122.1 1613.0,1122.5 1613.0,997.5\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764mm:g037741887:03774_1887-0009__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1243.2,997.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0711841,42.4331135]}},{"type":"Feature","properties":{"resourceCoords":[1574.0,997.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.071082,42.4324959]}}]}}]}