{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03698_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Brockton, Massachusetts | 1885 | mapsnap generated fit (2026-09-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-22"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"25"},{"label":"placed","value":"13"},{"label":"unplaced","value":"12"},{"label":"fit sources","value":"georef 10, georef-snap 2, snap:0 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"4 sheet(s) cut into 19 panels"},{"label":"unplaced pages","value":"p1 (tier 1, 42.09106,-71.01350 +/-100m); p3__1 (tier 1, 42.08474,-71.01941 +/-262m); p3__2 (tier 2, 42.08491,-71.02183 +/-363m); p4__1 (tier 1, 42.07852,-71.01916 +/-100m); p4__3 (tier 2, 42.08497,-71.01689 +/-100m); p4__6 (tier 1, 42.07874,-71.01858 +/-100m); p4__8 (tier 1, 42.08054,-71.00813 +/-100m); p8__2 (tier 1, 42.08633,-71.02150 +/-118m); p9__1 (tier 1, 42.09096,-71.01925 +/-108m); p9__2 (tier 1, 42.08381,-71.01499 +/-100m); p9__4 (tier 1, 42.09048,-71.01945 +/-100m); p9__5 (tier 3, 42.08588,-71.02365 +/-1104m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p10","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1286.8,1913.0 -0.0,1913.0 -0.0,0.0 1613.0,-0.0 1613.0,822.5 1294.2,837.2 1286.8,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[580.0,1611.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.022877,42.0876927]}},{"type":"Feature","properties":{"resourceCoords":[765.0,243.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.019879,42.087722]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p2","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 1613.0,0.0 1613.0,1913.0 0.0,1913.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[850.0,877.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0149428,42.0621829]}},{"type":"Feature","properties":{"resourceCoords":[505.0,1454.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0133952,42.061738]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p4 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"2011.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4440.8"},{"label":"split_canvas_h","value":"4350.4"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"705.3,1087.6 1184.4,1087.6 1613.0,1087.6 1613.0,0.0 502.8,0.0 521.3,576.6 534.5,950.6 539.4,1087.6 705.3,1087.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1051.4,708.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0094482,42.079116]}},{"type":"Feature","properties":{"resourceCoords":[1557.0,121.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0081485,42.0800738]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__4/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p4 [4]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3802.0"},{"label":"split_canvas_w","value":"2821.2"},{"label":"split_canvas_h","value":"3850.0"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__4/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"77.3,1153.4 -0.0,1133.7 -0.0,1913.0 705.0,1913.0 705.2,1340.8 705.3,1087.6 539.4,1087.6 534.5,950.6 64.7,950.5 77.3,1153.4 77.3,1153.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__4/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,950.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02124190345111,42.080591986104004]}},{"type":"Feature","properties":{"resourceCoords":[705.3,950.5],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02078765886932,42.079352893178715]}},{"type":"Feature","properties":{"resourceCoords":[705.3,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02306429262971,42.07889160236968]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0235185372115,42.08013069529497]}},{"type":"Feature","properties":{"resourceCoords":[106.0,1596.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.022702,42.080096]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p4 [5]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"2820.8"},{"label":"split_canvas_y","value":"4350.4"},{"label":"split_canvas_w","value":"1916.8"},{"label":"split_canvas_h","value":"1032.8"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1140.1,1087.6 705.3,1087.6 705.2,1340.8 1183.9,1345.8 1184.4,1087.6 1140.1,1087.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__5/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[705.2,1087.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02369375956296,42.07422734645332]}},{"type":"Feature","properties":{"resourceCoords":[1184.4,1087.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02137932891362,42.07451890154615]}},{"type":"Feature","properties":{"resourceCoords":[1184.4,1345.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02116727953364,42.07358853026018]}},{"type":"Feature","properties":{"resourceCoords":[705.2,1345.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02348171018298,42.07329697516735]}},{"type":"Feature","properties":{"resourceCoords":[1129.4,1326.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.021451,42.073623]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__7/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p4 [7]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"2820.0"},{"label":"split_canvas_y","value":"5363.2"},{"label":"split_canvas_w","value":"1915.6"},{"label":"split_canvas_h","value":"2288.8"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__7/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1183.1,1913.0 1183.8,1410.9 1183.9,1345.8 705.2,1340.8 705.0,1913.0 1183.1,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0004__7/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[736.0,1775.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.021658,42.074886]}},{"type":"Feature","properties":{"resourceCoords":[736.0,1366.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.021796,42.075665]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0005/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0005","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"302.0,42.1 300.6,0.0 1613.0,0.0 1613.0,1913.0 130.6,1884.5 81.5,3.5 302.0,42.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0174329050844,42.08286061267287]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.01351643464095,42.0828484868949]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.01353567519288,42.079376739293245]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.01745214563634,42.07938886507121]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p6","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0006/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1835.1 0.0,344.5 591.8,192.8 530.0,0.0 1613.0,0.0 1613.0,309.4 1540.5,308.8 1555.0,1120.4 1513.6,1156.8 1437.3,1158.7 1432.2,1823.4 0.0,1835.1\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0006/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0216506780385,42.07938407815155]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02171584839313,42.0823508290545]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.01700837822894,42.082408599377615]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0169432078743,42.079441848474666]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p7","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0007/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"81.7,833.4 118.8,780.0 95.7,0.0 1613.0,0.0 1613.0,56.7 1466.5,60.2 1503.9,1488.2 1613.0,1486.4 1613.0,1913.0 418.6,1913.0 421.2,1702.9 380.1,1703.7 420.6,1490.0 0.0,1491.8 0.0,837.4 81.7,833.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[421.0,1490.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0172352,42.0828536]}},{"type":"Feature","properties":{"resourceCoords":[132.0,1490.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0172289,42.0823177]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p8 [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":"2450.4"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"186.9,1455.7 176.5,1890.1 0.0,1885.8 0.0,1913.0 409.1,1913.0 404.5,1603.8 604.4,1485.8 609.9,522.2 612.3,59.8 293.4,111.5 275.4,0.0 72.5,0.0 75.8,1454.8 186.9,1455.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[471.7,408.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0198634,42.0855218]}},{"type":"Feature","properties":{"resourceCoords":[355.8,1457.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0172806,42.0853747]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0008__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p8 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"1618.0"},{"label":"split_canvas_y","value":"1472.4"},{"label":"split_canvas_w","value":"4834.0"},{"label":"split_canvas_h","value":"6179.6"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0008__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1286.3,1913.0 1337.2,950.2 1613.0,962.9 1613.0,371.1 1027.2,368.1 1026.9,523.4 609.9,522.2 604.4,1485.8 404.5,1603.8 409.1,1913.0 1286.3,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0008__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1041.2,804.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.023512,42.085922]}},{"type":"Feature","properties":{"resourceCoords":[1350.1,189.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.025117,42.086255]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0009__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p9 [3]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"3516.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2935.2"},{"label":"split_canvas_h","value":"2018.0"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0009__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,0.0 879.2,0.0 883.8,429.4 884.3,472.6 1302.3,438.6 1305.3,498.1 1613.0,493.6 1613.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0009__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1260.1,440.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.019287,42.090648]}},{"type":"Feature","properties":{"resourceCoords":[1260.1,107.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.018472,42.090616]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0009__6/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Brockton, Massachusetts | 1885 | sanborn03698_001 p9 [6]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"4083.6"},{"label":"split_canvas_y","value":"5719.6"},{"label":"split_canvas_w","value":"2368.4"},{"label":"split_canvas_h","value":"1932.4"}],"created":"2026-09-22T05:39:53Z","modified":"2026-09-22T05:39:53Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0009__6/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1913.0 1613.0,1524.5 1192.4,1537.2 1197.5,1437.6 1020.9,1440.9 1028.0,1913.0 1613.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764bm:g036981885:03698_1885-0009__6/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[1020.9,1429.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.01905402447682,42.0916591295528]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1429.9],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.01905641336451,42.090570833535104]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02024501471867,42.09057229063017]}},{"type":"Feature","properties":{"resourceCoords":[1020.9,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02024262583097,42.09166058664787]}}]}}]}