{"id":"https://data.mapsnap.org/runs/v1.3/iiif/chronoscope/sanborn03830_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Revere, Massachusetts | 1891 | mapsnap generated fit (2026-09-23)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-23"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"36"},{"label":"placed","value":"19"},{"label":"unplaced","value":"17"},{"label":"fit sources","value":"georef 10, georef-snap 9"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"8 sheet(s) cut into 25 panels"},{"label":"unplaced pages","value":"p1 (tier 3, 42.35978,-70.97050 +/-677m); p11__2 (tier 1, 42.38233,-70.97229 +/-130m); p16__3 (tier 3, 42.37812,-70.98556 +/-677m); p3__1 (tier 1, 42.40943,-70.99142 +/-192m); p4__1 (tier 1, 42.43716,-70.97072 +/-110m); p4__2 (tier 1, 42.43928,-70.96657 +/-106m); p4__3 (tier 1, 42.43865,-70.96704 +/-100m); p4__4 (tier 1, 42.43943,-70.96968 +/-100m); p5__1 (tier 1, 42.42599,-70.98804 +/-179m); p5__2 (tier 1, 42.41841,-70.98761 +/-154m); p5__3 (tier 1, 42.40372,-71.00767 +/-147m); p6__2 (tier 1, 42.41091,-71.01336 +/-100m); p7__2 (tier 1, 42.40395,-71.01779 +/-100m); p7__3 (tier 1, 42.40358,-71.01785 +/-100m); p7__4 (tier 1, 42.40653,-71.01480 +/-100m); p7__6 (tier 1, 42.40982,-71.00871 +/-118m); p8__2 (tier 1, 42.39769,-70.99160 +/-183m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p10","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0010/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0010","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,244.2 1613.0,1913.0 625.4,1913.0 625.4,1913.0 0.0,1913.0 -0.0,0.0 805.2,0.0 805.0,125.8 1613.0,244.2\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[804.0,703.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9844897,42.3942165]}},{"type":"Feature","properties":{"resourceCoords":[440.0,703.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9848257,42.393576]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0011__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p11 [1]","metadata":[{"label":"streets","value":"8"},{"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":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0011__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0011","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"643.0,1702.4 641.5,1913.0 1477.5,1731.4 1530.6,1913.0 1613.0,1913.0 1613.0,0.0 932.0,0.0 522.9,759.7 362.4,896.3 0.0,710.4 -0.0,1913.0 196.8,1913.0 187.2,1826.1 643.0,1702.4\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0011__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[577.0,1319.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9749118,42.3808543]}},{"type":"Feature","properties":{"resourceCoords":[666.0,901.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9745979,42.3816477]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p12","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0012/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0012","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"60.6,1848.8 75.5,1913.0 -0.0,1913.0 -0.0,64.4 97.4,90.7 111.5,0.0 610.8,0.0 551.5,213.1 1454.8,259.1 1459.1,457.8 1543.3,480.5 1613.0,223.0 1613.0,1507.2 60.6,1848.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0012/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.97630284880762,42.37989367666547]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.97237594729172,42.38045113691396]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.97148722154583,42.37698650295942]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.97541412306173,42.376429042710924]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0013/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0013","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"429.0,1913.0 -0.0,1913.0 0.0,-0.0 1613.0,0.0 1613.0,1586.5 398.9,1603.8 429.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.9752964988326,42.37656625420167]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.97169466940208,42.37775321229391]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.96980246084499,42.3745752354301]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.97340429027551,42.37338827733786]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p14","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0014/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0014","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1584.3 -0.0,299.3 335.9,304.1 310.7,0.0 1613.0,0.0 1613.0,1913.0 1373.4,1913.0 1381.8,1866.4 642.8,1762.0 648.4,1677.3 -0.0,1584.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0014/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.97352120088733,42.37395515146934]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.96987843093876,42.37520209625267]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.96789067529227,42.371987864572375]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.97153344524084,42.37074091978904]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0015/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p15","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0015/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0015","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 0.0,-0.0 810.1,0.0 810.4,84.8 1558.2,83.2 1556.4,130.7 1613.0,122.5 1613.0,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0015/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.97222613862645,42.37121547738333]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.96838963236188,42.37206358461362]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.96703772914718,42.36867824469816]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.97087423541176,42.36783013746787]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0016__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p16 [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":"4351.2"},{"label":"split_canvas_h","value":"3092.4"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0016__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"249.6,631.7 448.9,543.3 602.9,577.0 590.6,632.8 1087.8,299.3 1013.7,0.0 -0.0,-0.0 -0.0,444.8 225.0,494.2 249.6,631.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0016__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[182.0,256.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9792022,42.3834186]}},{"type":"Feature","properties":{"resourceCoords":[249.9,632.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9797713,42.3828031]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0016__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p16 [2]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0016__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0016","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1244.8 1613.0,-0.0 1444.7,-0.0 1257.0,137.8 1199.9,-0.0 1013.7,0.0 1087.8,299.3 504.5,690.6 436.9,735.9 418.4,740.7 354.9,748.6 298.5,770.5 169.2,771.8 0.0,773.1 0.0,1105.4 753.3,1371.2 753.5,1716.3 753.5,1775.5 976.8,1613.9 1003.7,1628.7 1281.8,1393.1 1341.4,1434.2 1308.3,1373.9 1403.2,1305.2 1613.0,1244.8\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0016__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1257.0,1345.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9822709,42.3815972]}},{"type":"Feature","properties":{"resourceCoords":[1257.0,138.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9797713,42.3828031]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0017/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0017","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"38.9,915.7 152.8,865.7 167.3,457.9 0.0,119.9 0.0,-0.0 1613.0,0.0 1613.0,920.3 1585.4,933.3 1613.0,1296.8 1545.1,1320.6 1613.0,1329.5 1613.0,1467.8 1539.2,1651.7 1613.0,1705.7 1613.0,1913.0 115.7,1913.0 143.7,1124.3 38.9,915.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98675135587055,42.37958562576444]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.9853344227929,42.382358170029]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98091419068481,42.381108072324494]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98233112376246,42.378335528059935]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0018/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p18","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0018/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0018","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 1428.5,0.0 1431.9,94.2 1613.0,429.6 1613.0,842.2 1499.7,896.7 1613.0,1103.7 1613.0,1913.0 979.2,1913.0 917.7,1726.8 622.9,1531.3 24.9,983.2 0.0,1024.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0018/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.9880461282681,42.37717323518026]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98651462862057,42.37987749782704]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98220342660483,42.37852626993229]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98373492625235,42.37582200728551]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0019/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0019","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1913.0 -0.0,-0.0 1164.8,0.0 1321.9,107.1 1461.7,0.0 1613.0,0.0 1613.0,1913.0 -0.0,1913.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0019/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98583561846593,42.376408754689024]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98230110532297,42.3779090873367]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.97990932486644,42.37479050616144]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98344383800939,42.373290173513766]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p2","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0002/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0002","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,0.0 1613.0,755.4 1548.3,757.4 1580.7,1556.9 1500.5,1562.7 1508.9,1829.7 1613.0,1826.6 1613.0,1913.0 0.0,1913.0 -0.0,0.0 1613.0,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0002/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.99555997237545,42.40598427100896]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.99495937487552,42.40888816484031]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.99032775621247,42.408358510342985]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.99092835371239,42.40545461651163]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0003__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p3 [2]","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":"6452.0"},{"label":"split_canvas_h","value":"4067.2"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0003__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0003","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,761.7 0.0,988.7 219.1,987.0 477.3,1016.8 1613.0,1015.9 1613.0,0.0 70.2,0.0 76.9,759.9 0.0,761.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0003__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[73.0,127.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.992824,42.408539]}},{"type":"Feature","properties":{"resourceCoords":[73.0,502.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.991861,42.408452]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0006__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p6 [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":"3405.6"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0006__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1402.9,0.0 1327.4,0.0 2.4,0.0 42.1,102.4 45.5,412.2 91.5,411.8 102.8,536.0 50.9,695.5 578.8,697.4 647.1,851.4 1452.1,841.7 1562.1,690.1 1613.0,484.7 1613.0,0.0 1402.9,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0006__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1032.0,412.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0133005,42.4085582]}},{"type":"Feature","properties":{"resourceCoords":[46.0,412.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0142089,42.4070148]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0006__3/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p6 [3]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3359.2"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4292.8"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0006__3/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0006","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"79.5,1607.6 0.0,1691.0 0.0,1913.0 898.0,1913.0 1182.0,1913.0 1613.0,1913.0 1613.0,839.8 647.1,851.4 548.1,1160.7 153.1,1123.4 159.9,1333.2 79.5,1607.6\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0006__3/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1544.0,1300.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.011234,42.411781]}},{"type":"Feature","properties":{"resourceCoords":[170.0,1300.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0127149,42.4094718]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0007__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p7 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"4365.2"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0007__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,-0.0 0.0,978.8 577.3,978.7 1049.5,978.6 1048.3,1087.3 1613.0,1091.3 1613.0,396.2 1158.8,391.8 1160.3,0.0 0.0,-0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0007__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1226.0,799.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0145388,42.4064904]}},{"type":"Feature","properties":{"resourceCoords":[789.0,150.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0164744,42.4066567]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0007__5/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p7 [5]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"4160.4"},{"label":"split_canvas_y","value":"4349.2"},{"label":"split_canvas_w","value":"2291.6"},{"label":"split_canvas_h","value":"3302.8"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0007__5/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0007","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1613.0,1091.3 1048.3,1087.3 1044.8,1420.9 1043.1,1420.9 1040.4,1830.9 1040.1,1913.0 1040.2,1913.0 1613.0,1913.0 1613.0,1091.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0007__5/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1323.0,1516.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.01038,42.40723]}},{"type":"Feature","properties":{"resourceCoords":[1323.0,1841.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.010901,42.4067504]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0008__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p8 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"1355.2"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"6296.8"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0008__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0008","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1612.8,350.3 1456.3,353.3 1425.4,432.4 637.4,338.8 0.0,702.9 0.0,1913.0 582.6,1913.0 577.0,1765.5 1582.7,1689.0 1612.8,350.3\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0008__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[914.0,1778.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9895349,42.3968651]}},{"type":"Feature","properties":{"resourceCoords":[1156.0,854.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.9912194,42.3982728]}}]}},{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Revere, Massachusetts | 1891 | sanborn03830_001 p9","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-23T07:20:42Z","modified":"2026-09-23T07:20:42Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0009/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0009","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"541.2,156.7 545.5,0.0 1613.0,0.0 1613.0,1913.0 576.2,1913.0 557.2,1786.2 0.0,1868.2 0.0,115.3 541.2,156.7\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd376m:g3764m:g3764rm:g038301891:03830_1891-0009/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.99074109650292,42.395443817742446]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98874046766731,42.39805400026044]}},{"type":"Feature","properties":{"resourceCoords":[1613.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98457805765442,42.39628936989428]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1913.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.98657868649002,42.39367918737629]}}]}}]}