{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03693_012.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Boston, Massachusetts | 1900 | 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":"125"},{"label":"placed","value":"85"},{"label":"unplaced","value":"40"},{"label":"fit sources","value":"georef 60, georef-snap 22, snap:0 2, snap:2 1, georef-street 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"8 sheet(s) cut into 18 panels"},{"label":"unplaced pages","value":"p0 (tier 4, 42.37739,-71.04520 +/-3797m); p1 (tier 1, 42.37451,-71.04219 +/-248m); p109 (tier 1, 42.37158,-71.06026 +/-126m); p109s (tier 1, 42.37204,-71.05996 +/-122m); p110 (tier 1, 42.37908,-71.05597 +/-218m); p111 (tier 3, 42.38193,-71.05155 +/-418m); p13__2 (tier 1, 42.38592,-71.01940 +/-100m); p15__1 (tier 1, 42.38405,-71.01632 +/-100m); p15__2 (tier 2, 42.38433,-71.01794 +/-210m); p16 (tier 2, 42.38571,-71.01447 +/-100m); p18 (tier 1, 42.38551,-71.01162 +/-248m); p21__2 (tier 2, 42.37927,-71.03902 +/-203m); p28 (tier 1, 42.37962,-71.02266 +/-243m); p3 (tier 1, 42.37712,-71.04138 +/-249m); p30 (tier 2, 42.37672,-71.02358 +/-100m); p32 (tier 2, 42.37571,-71.02564 +/-100m); p45 (tier 1, 42.36955,-71.03975 +/-120m); p45s (tier 1, 42.36961,-71.03976 +/-113m); p51 (tier 1, 42.36528,-71.03533 +/-226m); p57 (tier 2, 42.39033,-71.00695 +/-100m); p58 (tier 2, 42.38981,-71.00191 +/-236m); p59 (tier 2, 42.38903,-71.00973 +/-100m); p64 (tier 2, 42.38758,-71.00372 +/-141m); p65 (tier 2, 42.38586,-71.00595 +/-100m); p66 (tier 3, 42.39232,-71.06595 +/-418m); p67 (tier 3, 42.39099,-71.06342 +/-418m); p68__1 (tier 3, 42.38971,-71.06083 +/-418m); p68__2 (tier 3, 42.38971,-71.06083 +/-418m); p77__1 (tier 1, 42.37920,-71.07426 +/-215m); p77__2 (tier 2, 42.38106,-71.07588 +/-100m); p79 (tier 1, 42.37915,-71.07148 +/-124m); p80 (tier 1, 42.37582,-71.06883 +/-100m); p81__1 (tier 2, 42.37300,-71.05038 +/-1451m); p81__2 (tier 2, 42.37300,-71.05038 +/-1451m); p82__1 (tier 2, 42.37339,-71.06985 +/-100m); p82__3 (tier 1, 42.37318,-71.06908 +/-100m); p86__2 (tier 2, 42.38289,-71.06572 +/-162m); p86__3 (tier 1, 42.38193,-71.06607 +/-100m); p98 (tier 1, 42.37632,-71.05670 +/-253m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p10","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"7"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0010/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0010/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5584.0,7309.7 4652.6,7072.7 3844.1,7988.0 1539.2,7988.0 1326.9,7889.9 1105.1,7988.0 -0.0,7988.0 -0.0,-0.0 4239.6,-0.0 4616.8,821.8 4888.9,1868.0 5584.0,6609.1 5584.0,7309.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0010/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4652.0,7072.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0265529,42.381332]}},{"type":"Feature","properties":{"resourceCoords":[5692.0,7336.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0261599,42.3807565]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0100/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p100","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"17"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0100/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0100/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1450.5,6741.5 1296.2,7187.3 804.0,7218.7 -0.0,6942.7 -0.0,5487.8 229.6,4309.0 -0.0,1406.4 3319.4,1288.9 5334.4,1902.0 4066.2,6150.6 4238.7,6759.9 4711.7,6625.1 4709.9,6878.0 2673.5,7134.6 1450.5,6741.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0100/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4552.0,1104.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0636901,42.3751015]}},{"type":"Feature","properties":{"resourceCoords":[4520.0,4640.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0653156,42.3739844]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0101/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p101","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0101/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0101/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1139.3,4714.3 1499.7,4010.6 1972.1,701.8 4122.0,786.3 4017.1,2670.7 4696.3,6521.0 2981.5,7057.5 1260.4,7242.5 1506.1,4830.6 1139.3,4714.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0101/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06686973225546,42.37599279777723]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06481939165295,42.37807764794349]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06081051228202,42.3758956056428]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06286085288453,42.37381075547654]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0102/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p102","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0102/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0102/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2495.1,1083.4 4083.3,298.4 4818.9,2386.8 4724.2,3276.7 4219.6,3908.8 2947.5,4015.5 3788.6,5171.0 803.2,4723.7 847.0,1526.9 2495.1,1083.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0102/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06383017214834,42.37471222084427]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06133486430154,42.376560922332644]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0577801456329,42.373905271449374]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0602754534797,42.372056569961]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0103/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p103","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0103/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0103/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4218.0,5420.4 3978.8,6278.7 813.8,7629.0 566.1,7042.0 1308.0,2626.2 -0.0,2407.0 -0.0,2021.6 4876.0,1109.2 4701.8,2288.2 4815.5,2275.5 4990.6,3295.2 4558.8,3903.5 4997.4,4257.7 4218.0,5420.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0103/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06287972809032,42.37578723430365]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06083155662489,42.37370613884168]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06483306471655,42.371526322483874]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06688123618198,42.37360741794584]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0104/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p104","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0104/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0104/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5584.0,7988.0 -0.0,7988.0 -0.0,3647.6 736.1,4209.6 454.9,3078.2 413.6,2310.2 1939.3,2501.5 2058.8,1950.3 2796.7,2062.8 3629.5,1448.0 3567.0,1352.1 4699.2,978.0 5463.3,2209.5 5555.2,2623.1 4189.2,4432.4 4881.4,5101.8 4396.3,5432.3 5584.0,7611.6 5584.0,7988.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0104/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06462309140475,42.37375379696701]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06120578301949,42.37418012795069]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06038605573445,42.37054309722003]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06380336411972,42.37011676623635]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0105/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p105","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0105/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0105/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5584.0,2004.6 4836.8,7988.0 4686.3,7988.0 4357.5,7988.0 0.0,7988.0 -0.0,-0.0 5584.0,0.0 5584.0,2004.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0105/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07095632112778,42.37269214309383]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06916193493612,42.37488845372881]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06491195675783,42.37299083797968]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06670634294949,42.3707945273447]}},{"type":"Feature","properties":{"resourceCoords":[5112.0,5472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0664029,42.3734021]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0106/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p106","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0106/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0106/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3578.4,0.0 5153.2,3113.1 4369.4,4900.0 4059.1,4014.8 1644.1,7688.2 2100.1,7988.0 -0.0,7988.0 -0.0,3143.1 3413.4,2173.0 2651.6,0.0 3578.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0106/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06774465513062,42.372176747539555]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06523623725843,42.373907457716854]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06190858886215,42.37123769849584]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06441700673435,42.36950698831854]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0107/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p107","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0107/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0107/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5584.0,2596.7 1530.2,3674.3 495.1,4060.8 538.1,2464.6 1486.1,2160.1 1429.2,-0.0 5584.0,-0.0 5584.0,2596.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0107/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06180111388186,42.37139408648553]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06123915706765,42.3709110593896]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06216786150006,42.37031294781035]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06272981831427,42.37079597490628]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0108/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p108","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"8"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0108/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0108/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2127.8,7716.0 1133.0,5683.7 723.6,5576.8 -0.0,5670.0 -0.0,1927.4 787.9,1412.1 1255.9,549.6 2119.7,478.8 2018.1,-0.0 5584.0,-0.0 5584.0,7988.0 3110.5,7988.0 3034.8,7408.2 2127.8,7716.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0108/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[824.0,1384.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0589096,42.3742804]}},{"type":"Feature","properties":{"resourceCoords":[2128.0,7716.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0616045,42.3720555]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p11","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0011/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0011/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3465.0,6594.7 3752.4,7298.8 485.7,7390.4 483.2,7910.3 -0.0,7921.9 -0.0,6581.8 696.4,6401.0 1419.7,4987.0 2662.3,4980.6 2441.0,4103.4 734.4,-0.0 2348.2,-0.0 2801.2,871.0 3453.5,869.6 3452.8,-0.0 5584.0,-0.0 5584.0,5714.5 4788.0,4678.2 4672.5,4699.5 4410.9,4175.0 3453.1,4568.1 3465.0,6594.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0011/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02416015267083,42.382964428571896]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02259272132166,42.3806394882257]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0270636151467,42.378971506533404]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02863104649587,42.3812964468796]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0012/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p12","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0012/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0012/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5536.4 -0.0,4864.8 891.4,4396.6 894.9,2739.9 2815.0,1930.8 4015.9,1218.4 4925.1,2583.1 4872.2,3264.8 5584.0,2657.3 5584.0,3986.1 5304.0,3984.0 5321.0,6955.2 5020.0,6960.0 5037.8,7988.0 -0.0,7988.0 -0.0,7721.6 884.4,7718.5 889.0,5530.6 -0.0,5536.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0012/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5304.0,3984.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0211941,42.3830489]}},{"type":"Feature","properties":{"resourceCoords":[5020.0,6960.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0205327,42.3817856]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0013__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p13 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5584.0"},{"label":"split_canvas_h","value":"7988.0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0013__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0013/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4226.7,7682.9 4127.7,6610.3 5584.0,4534.2 5584.0,0.0 1058.8,0.0 1054.4,1700.0 0.0,1983.2 -0.0,5437.8 1760.0,6005.0 1804.6,6339.5 1829.9,6591.6 1866.0,7160.0 3652.7,7207.5 4226.7,7682.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0013__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1864.0,7160.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.02266,42.3839081]}},{"type":"Feature","properties":{"resourceCoords":[7456.0,4504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0191822,42.3837826]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p14","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0014/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0014/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1313.6,4268.0 1304.0,1340.0 1579.9,1342.8 1583.2,33.6 5584.0,0.0 5584.0,2447.4 4901.1,2450.0 4863.5,6829.0 4526.8,6827.8 4522.7,7988.0 -0.0,7988.0 -0.0,5282.5 1032.0,5285.1 1016.9,4272.0 1313.6,4268.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1040.0,5824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0200853,42.3811531]}},{"type":"Feature","properties":{"resourceCoords":[1304.0,1340.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0211941,42.3830489]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0017/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0017/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"459.6,2065.3 -0.0,1588.0 -0.0,-0.0 5584.0,0.0 5584.0,7988.0 -0.0,7988.0 -0.0,3650.7 1406.5,3663.6 1405.8,3520.4 462.8,3504.8 459.6,2065.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.01637238126827,42.385248221917784]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.01324569270022,42.38642642298878]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.01097987685719,42.38309933165602]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.01410656542524,42.38192113058503]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p19","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0019/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0019/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4876.0,6983.0 -0.0,6922.2 -0.0,1139.6 258.8,947.7 1687.2,957.4 1702.0,-0.0 1848.0,-0.0 1835.7,958.7 1836.0,1111.1 1836.6,1428.0 5584.0,1444.5 5584.0,3106.6 4901.2,3108.5 4876.0,6983.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0019/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3404.0,6944.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0179406,42.3819451]}},{"type":"Feature","properties":{"resourceCoords":[3404.0,968.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0146431,42.3831841]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0002/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p2","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"4"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0002/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0002/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0,7988 0,0 5584,0 5584,7988 0,7988\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0002/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4432.0,6736.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0397249,42.3753854]}},{"type":"Feature","properties":{"resourceCoords":[5328.0,2216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0398788,42.3771291]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p20","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0020/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0020/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5584.0,-0.0 5584.0,7988.0 -0.0,7988.0 -0.0,7647.1 468.0,7656.0 464.0,3828.5 1138.5,3821.6 1126.1,2179.8 1792.4,2177.7 1773.4,-0.0 5584.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1956.0,1720.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0138041,42.381948]}},{"type":"Feature","properties":{"resourceCoords":[468.0,7656.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.017549,42.381337]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0021__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p21 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"18"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5584.0"},{"label":"split_canvas_h","value":"7988.0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0021__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0021/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2175.7,7662.2 5368.2,6144.8 2405.4,0.0 1979.4,0.0 1980.0,248.0 450.5,253.9 437.1,0.0 -0.0,-0.0 -0.0,7988.0 841.1,7697.7 2175.7,7662.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0021__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1980.0,4400.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0392083,42.3786463]}},{"type":"Feature","properties":{"resourceCoords":[1980.0,248.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.039252,42.3805454]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p22","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0022/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0022/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4824.0,6776.0 956.1,6772.0 971.1,274.0 5010.4,2340.9 4838.1,2768.8 4824.0,6776.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0022/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[960.0,5276.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0375121,42.3784902]}},{"type":"Feature","properties":{"resourceCoords":[4824.0,6776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0349391,42.3786794]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0023/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p23","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0023/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0023/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"634.6,2535.3 807.3,2110.3 4581.3,4058.0 4490.5,4685.2 4951.7,4923.4 5226.7,4391.1 5584.0,4575.5 5584.0,5057.4 4483.8,5050.8 4464.0,6536.0 608.6,6520.1 634.6,2535.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0023/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[628.0,3552.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0357757,42.3799082]}},{"type":"Feature","properties":{"resourceCoords":[4464.0,6536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.032781,42.379486]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p24","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0024/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0024/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5080.0,108.0 5106.0,7809.3 646.0,7866.5 610.2,116.3 5080.0,108.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0024/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[628.0,3996.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0349391,42.3786794]}},{"type":"Feature","properties":{"resourceCoords":[5080.0,108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0315298,42.3776468]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p25","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0025/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0025/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"872.0,6964.0 917.9,969.3 4764.5,986.1 4721.9,6997.0 872.0,6964.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0025/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2984.0,980.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0320484,42.3805292]}},{"type":"Feature","properties":{"resourceCoords":[872.0,6964.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0315298,42.3776468]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p26","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"22"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0026/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0026/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5150.1,2545.4 5226.5,5845.8 701.6,7743.0 802.4,7447.7 661.3,7055.3 674.5,1073.0 2101.4,1055.5 2253.3,769.4 4616.1,1971.7 4627.1,2543.2 5150.1,2545.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0026/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2252.0,768.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0302705,42.3813489]}},{"type":"Feature","properties":{"resourceCoords":[656.0,4040.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0302421,42.3796734]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0027/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0027/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"570.3,7731.3 541.1,1936.4 1322.5,-0.0 2389.2,-0.0 2433.4,602.2 2551.9,627.1 2905.2,1926.2 3695.7,-0.0 4409.0,50.2 4368.4,3715.8 4642.7,3700.4 5017.4,4999.4 5068.4,7988.0 1895.6,7988.0 1894.8,7725.5 570.3,7731.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0027/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02635367527958,42.3809655226382]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02379471736275,42.37930752474174]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02698296133167,42.37658431642127]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0295419192485,42.37824231431773]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p29","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0029/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0029/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7988.0 -0.0,-0.0 5584.0,-0.0 5584.0,7988.0 -0.0,7988.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0029/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02435319437345,42.37963928086149]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02175417551643,42.377938745788484]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0250448015493,42.37519020752049]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02764382040631,42.376890742593496]}},{"type":"Feature","properties":{"resourceCoords":[736.0,7548.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.02712,42.376818]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p31","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0031/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0031/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4312.5,5781.5 4109.7,5776.9 4058.1,7988.0 -0.0,7988.0 -0.0,7057.5 1722.5,7072.3 1754.8,3339.2 1266.3,3334.9 1286.8,0.0 1668.9,0.0 4875.1,1380.7 4850.8,1805.5 4640.6,2039.7 4619.5,3363.9 4357.3,3361.7 4312.5,5781.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0031/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4540.0,6536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.02712,42.376818]}},{"type":"Feature","properties":{"resourceCoords":[1280.0,892.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0310388,42.377338]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0033/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p33","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0033/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0033/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5097.9,848.1 5163.7,6050.7 4819.7,6617.1 5584.0,6980.9 5584.0,7931.0 4639.5,7988.0 4639.5,7988.0 -0.0,7988.0 -0.0,5630.7 618.7,4444.3 639.0,918.9 5097.9,848.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0033/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03675953793976,42.37832779227121]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03521114962253,42.376023875657054]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03964127775174,42.37437603335153]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.04118966606897,42.376679949965684]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p34","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0034/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0034/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5294.9,7209.9 296.9,7221.6 278.0,4403.4 -0.0,4276.8 -0.0,4034.7 982.5,3858.0 755.5,3067.1 441.1,2980.3 517.6,253.5 5296.0,2158.9 5294.9,7209.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0034/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5296.0,6116.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0339351,42.3748496]}},{"type":"Feature","properties":{"resourceCoords":[5296.0,2160.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0358163,42.3760495]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0035/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p35","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0035/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0035/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5163.9,7585.0 23.4,7612.3 3107.0,25.9 3113.1,399.7 5105.9,364.9 5163.9,7585.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0035/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2956.0,4008.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.03299,42.376408]}},{"type":"Feature","properties":{"resourceCoords":[3996.0,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0310388,42.377338]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0036/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p36","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0036/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0036/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1916.0,-0.0 5584.0,-0.0 5584.0,7413.6 1924.8,7359.1 1916.0,7640.0 620.7,7635.9 617.7,468.7 1916.0,480.0 1916.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0036/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1916.0,7640.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0328065,42.3741282]}},{"type":"Feature","properties":{"resourceCoords":[1916.0,480.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0299043,42.3766218]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p37","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"20"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0037/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0037/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"620.0,6812.0 616.7,6289.9 -0.0,6309.0 -0.0,2211.8 442.7,2499.1 442.7,2499.1 1266.3,2965.9 1777.3,2168.8 1331.4,1447.1 1647.6,1257.0 1924.8,1159.4 4616.6,1721.9 4758.8,1425.4 5584.0,1341.3 5584.0,2708.6 4963.6,3517.9 4520.5,6061.6 4304.2,6253.2 4576.2,6692.5 4345.5,6816.4 620.0,6812.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0037/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1868.0,6812.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0405072,42.3727232]}},{"type":"Feature","properties":{"resourceCoords":[620.0,6812.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0411764,42.3730157]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p38","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0038/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0038/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2399.7,7187.4 2368.2,5448.2 647.9,5468.2 517.4,511.3 3209.7,506.5 4141.5,960.6 4479.7,895.5 4482.6,1126.9 4765.4,1264.8 4819.5,4113.3 5096.9,4109.0 5134.4,7152.0 4574.1,7159.2 4573.7,7988.0 1280.9,7988.0 1131.4,7204.0 2399.7,7187.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0038/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3736.0,1992.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0368944,42.3730316]}},{"type":"Feature","properties":{"resourceCoords":[1132.0,7204.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0355421,42.370551]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p39","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0039/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0039/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3866.7,994.2 3860.0,2284.1 5584.0,2295.3 5584.0,4038.5 4312.9,4032.0 4448.5,4820.2 5584.0,4840.9 5584.0,7988.0 1420.1,7988.0 204.6,937.4 3866.7,994.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0039/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1552.0,976.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0380943,42.3704975]}},{"type":"Feature","properties":{"resourceCoords":[4312.0,4032.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0355421,42.370551]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p4","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0004/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0004/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0,7988 0,0 5584,0 5584,7988 0,7988\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0004/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5068.0,5984.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.040199,42.3805308]}},{"type":"Feature","properties":{"resourceCoords":[5068.0,2812.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0403367,42.3819942]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p40","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0040/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0040/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7988.0 -0.0,3397.2 559.4,3393.6 520.4,352.1 5288.0,313.6 5303.2,1609.1 5584.0,1615.7 5584.0,7988.0 -0.0,7988.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0040/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03572606104979,42.37278246850028]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03344025296609,42.374715454260915]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02972358684579,42.372282689236364]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03200939492949,42.37034970347573]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p41","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0041/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0041/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4816.4,5201.4 4815.4,7988.0 0.0,7988.0 0.0,-0.0 3873.9,0.0 4032.7,5225.2 4816.4,5201.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4816.0,6096.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.042589,42.3701211]}},{"type":"Feature","properties":{"resourceCoords":[4816.0,3488.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0439241,42.3707039]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p42","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0042/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0042/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5400.1,0.0 5185.1,7214.0 5584.0,7226.2 5584.0,7988.0 -0.0,7988.0 -0.0,-0.0 5400.1,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5280.0,4120.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.042293,42.3716177]}},{"type":"Feature","properties":{"resourceCoords":[3920.0,7176.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0439241,42.3707039]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0043/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p43","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0043/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0043/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4030.7,7171.9 1004.0,7171.8 1001.0,658.1 4696.2,663.5 4724.1,7172.0 5584.0,7170.3 5584.0,7988.0 4030.9,7988.0 4030.7,7171.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0043/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1004.0,4156.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.042293,42.3716177]}},{"type":"Feature","properties":{"resourceCoords":[4724.0,4156.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0402816,42.3707391]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p44","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"30"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0044/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0044/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3216.8,7496.8 3217.3,7988.0 2411.4,7988.0 2410.2,7500.3 1542.0,7504.0 1497.2,932.5 1728.0,807.9 1454.6,368.5 1794.1,229.4 5232.5,843.5 4484.6,4699.5 4124.7,4563.0 4214.9,5335.8 4076.6,7493.1 3216.8,7496.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2772.0,4464.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0396213,42.3704463]}},{"type":"Feature","properties":{"resourceCoords":[1544.0,7504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0412457,42.3695343]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p46","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"25"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0046/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0046/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2765.2,6677.7 359.3,7046.4 503.6,7988.0 -0.0,7988.0 -0.0,3618.3 860.8,3615.3 1001.4,1455.7 911.8,681.9 1272.1,818.9 1347.5,549.9 4438.5,560.4 4443.7,6420.5 2765.2,6677.7 2765.2,6677.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0046/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4432.0,4512.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0382628,42.3677526]}},{"type":"Feature","properties":{"resourceCoords":[2696.0,560.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0379373,42.3697196]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p47","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"12"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0047/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0047/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4869.9,7255.9 4438.9,7258.0 4439.0,7983.7 2405.2,7988.0 2292.4,7268.3 647.2,7276.2 616.8,708.4 4655.7,684.4 4720.5,300.8 4848.2,683.2 4869.9,7255.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0047/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[624.0,4652.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0382628,42.3677526]}},{"type":"Feature","properties":{"resourceCoords":[4832.0,3716.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0357151,42.3671285]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p48","metadata":[{"label":"streets","value":"16"},{"label":"intersections","value":"24"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0048/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0048/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5442.4,697.8 5445.3,2178.2 5584.0,2177.5 5584.0,7988.0 -0.0,7988.0 -0.0,7266.2 428.7,7264.2 407.7,727.3 1789.6,719.2 3881.8,0.0 4805.0,0.0 5010.9,700.3 5442.4,697.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0048/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3820.0,6256.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0346801,42.3653172]}},{"type":"Feature","properties":{"resourceCoords":[3332.0,3724.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0341288,42.3664382]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p49","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0049/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0049/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5584.0,948.6 5584.0,7988.0 -0.0,7988.0 -0.0,-0.0 4080.1,0.0 3974.6,704.1 5584.0,948.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3976.0,704.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0390891,42.3667111]}},{"type":"Feature","properties":{"resourceCoords":[768.0,244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.040851,42.367468]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0005/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0005/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"417.0,2360.4 378.7,822.2 632.0,803.4 622.7,363.8 0.0,377.1 0.0,-0.0 5584.0,0.0 5584.0,435.8 4125.1,435.9 4125.1,544.0 4850.0,619.8 4932.3,7507.2 428.9,7501.2 425.2,2903.4 673.7,2782.9 664.7,2354.4 417.0,2360.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.04070614323156,42.380358977309925]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.04069164931424,42.382916128984455]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03577415221321,42.382900705466305]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03578864613053,42.380343553791775]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p50","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0050/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0050/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0,7988 0,0 5584,0 5584,7988 0,7988\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0050/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03880445218998,42.36683181547723]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03582899931092,42.36551082792319]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03838518065844,42.36236419969436]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0413606335375,42.3636851872484]}},{"type":"Feature","properties":{"resourceCoords":[3972.0,432.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0368262,42.365722]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p52","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0052/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0052/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0,7988 0,0 5584,0 5584,7988 0,7988\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0052/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03537791633293,42.36249027860842]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03436882603364,42.36494335811868]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02965280630968,42.36386924174606]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03066189660898,42.3614161622358]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p53","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0053/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0053/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5391.3,1109.8 5356.0,6913.1 2303.3,6889.9 1894.7,6005.3 248.9,5989.9 242.5,7988.0 0.0,7988.0 0.0,1015.6 5391.3,1109.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0053/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03467557308927,42.36463463904335]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03295382869122,42.36684855237336]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.02869752894915,42.36501589034256]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0304192733472,42.36280197701255]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p54","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0054/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0054/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,4669.7 929.2,0.0 5584.0,0.0 5584.0,7988.0 -0.0,7988.0 -0.0,6358.0 869.3,5950.6 -0.0,4669.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0054/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[864.0,4436.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0298179,42.3645714]}},{"type":"Feature","properties":{"resourceCoords":[864.0,1440.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0288701,42.3657643]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0055/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p55","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0055/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0055/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"491.6,725.3 2994.0,0.0 5584.0,0.0 5584.0,7988.0 3467.0,7988.0 500.0,6660.0 491.6,725.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0055/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[500.0,6660.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0293406,42.3651721]}},{"type":"Feature","properties":{"resourceCoords":[1992.0,728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0320226,42.3671386]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p56","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0056/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0056/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"665.2,2267.4 4828.5,0.0 5584.0,0.0 5584.0,7988.0 2488.2,6446.5 2213.1,6583.6 2042.2,5650.1 929.3,3663.1 665.2,2267.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0056/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03604199823091,42.368769128893106]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03381127084204,42.37067309364635]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03015064055123,42.36829879782587]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0323813679401,42.366394833072626]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p6","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0006/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0006/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"726.3,183.0 0.0,107.5 0.0,-0.0 5584.0,0.0 5584.0,7988.0 808.1,7988.0 726.3,183.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[808.0,1792.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0393163,42.3826131]}},{"type":"Feature","properties":{"resourceCoords":[808.0,7036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0360718,42.3826032]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p60","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0060/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0060/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7988.0 -0.0,-0.0 3317.3,0.0 3876.3,1278.9 4688.2,916.4 5584.0,2946.9 5584.0,3714.2 4733.1,5274.7 4513.7,5418.3 4565.5,5634.5 4771.6,5682.2 3784.5,6611.0 3319.5,7387.4 4263.4,7988.0 -0.0,7988.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0060/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5148.0,4424.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0073984,42.3873354]}},{"type":"Feature","properties":{"resourceCoords":[5648.0,3560.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.006791,42.387554]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p61","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"9"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0061/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0061/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"955.5,6016.4 937.8,4391.5 -0.0,4398.9 -0.0,0.0 5584.0,0.0 5584.0,902.4 4164.3,1080.2 4387.9,3092.5 5584.0,2948.6 5584.0,4302.8 5184.0,4320.0 5251.8,6076.9 4466.9,5962.3 4531.8,6455.9 5584.0,6317.6 5584.0,7988.0 4747.4,7988.0 3392.3,5972.7 955.5,6016.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0061/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[176.0,956.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0064157,42.3905845]}},{"type":"Feature","properties":{"resourceCoords":[5184.0,4320.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.003642,42.38859]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0062/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p62","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0062/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0062/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"508.6,0.0 288.1,779.7 2076.5,944.9 2040.7,1352.3 3412.2,1532.6 3425.8,302.0 5493.6,343.5 5584.0,7988.0 0.0,7988.0 0.0,-0.0 508.6,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0062/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[72.0,832.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0037768,42.3876641]}},{"type":"Feature","properties":{"resourceCoords":[3408.0,7600.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.999425,42.389053]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0063/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p63","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"13"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0063/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0063/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1048.3,6996.5 1414.5,5557.0 1195.9,5634.1 1020.8,5464.7 1139.1,5202.9 1007.8,3259.4 598.9,2616.7 -0.0,2164.6 -0.0,2039.9 1320.0,-0.0 5584.0,-0.0 5584.0,7988.0 1075.2,7988.0 1048.3,6996.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0063/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[976.0,3080.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.006791,42.387554]}},{"type":"Feature","properties":{"resourceCoords":[2664.0,3080.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0063742,42.3868484]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0069/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p69","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0069/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0069/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4542.6,7170.1 3222.0,7456.7 2338.1,7906.5 1908.0,7682.8 566.4,7988.0 0.0,7988.0 0.0,4885.6 266.9,3256.2 0.0,1500.5 0.0,-0.0 4462.0,0.0 4072.2,3688.7 4910.3,3690.2 4542.6,7170.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0069/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2536.0,3688.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.075614,42.386295]}},{"type":"Feature","properties":{"resourceCoords":[1908.0,7684.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0736888,42.3850981]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p7","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0007/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0007/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5064.1,7988.0 602.6,7389.8 608.0,2932.0 1548.0,0.0 5584.0,0.0 5584.0,7988.0 5064.1,7988.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0007/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4872.0,4264.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0334049,42.3819785]}},{"type":"Feature","properties":{"resourceCoords":[608.0,2932.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0360718,42.3826032]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p70","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0070/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0070/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5584.0,0.0 5584.0,7988.0 1591.2,7988.0 1748.8,7136.6 832.0,7201.9 832.0,3834.0 0.0,3920.4 0.0,-0.0 5584.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0070/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[832.0,3832.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0748477,42.3872274]}},{"type":"Feature","properties":{"resourceCoords":[832.0,7328.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0731139,42.3862557]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p71","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0071/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0071/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5092.0,3924.0 4714.7,5091.4 3953.7,4796.8 3034.8,6716.4 3812.1,7988.0 2257.6,7988.0 430.0,4719.6 0.0,4960.0 0.0,3148.0 1012.7,2895.3 353.8,347.4 0.0,461.8 -0.0,-0.0 5584.0,0.0 5584.0,2676.2 5082.1,2439.7 4489.1,3678.4 5092.0,3924.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0071/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1340.0,2396.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0795352,42.3825118]}},{"type":"Feature","properties":{"resourceCoords":[5092.0,3924.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0783468,42.3841785]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0072/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p72","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0072/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0072/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3345.0,6987.4 0.0,4788.6 0.0,2639.2 819.0,2580.8 652.6,1351.9 0.0,1386.9 -0.0,-0.0 4315.2,0.0 4582.0,2319.1 4317.4,3944.4 4318.4,5945.4 4203.5,5940.8 4171.1,6751.5 3781.3,6383.8 3749.2,7066.8 3345.0,6987.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0072/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07927676364216,42.38424131620668]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07748792759199,42.386454924131186]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07323089124459,42.38455144037803]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07501972729476,42.38233783245353]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p73","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0073/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0073/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1439.3,7063.5 1241.4,4506.3 2256.2,4436.4 2565.0,2697.6 5584.0,1649.9 5584.0,7988.0 -0.0,7988.0 -0.0,7151.7 1719.6,7457.2 1798.3,7014.0 1439.3,7063.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0073/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2464.0,4424.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.079126,42.38176]}},{"type":"Feature","properties":{"resourceCoords":[2768.0,6880.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.080693,42.3815243]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0074/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p74","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0074/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0074/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2103.2,3206.9 2056.8,5030.1 698.1,4227.7 663.3,1686.5 502.6,1322.3 -0.0,1640.0 -0.0,967.5 632.4,756.0 799.8,1205.3 893.2,793.7 1087.7,707.1 3041.4,647.8 3646.8,3039.3 2103.2,3206.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0074/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0737017618204,42.38450737683131]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07225375410773,42.38218862597183]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0767128591979,42.380647768216825]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07816086691057,42.382966519076305]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0075/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p75","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0075/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0075/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2469.2,0.0 4535.7,0.0 3777.3,486.9 3262.6,1035.6 4045.8,1134.0 4338.2,1427.6 4243.6,2121.4 4456.6,3447.5 3713.9,3849.9 3753.8,4053.1 4528.8,3697.5 5160.8,6987.9 2029.5,7624.3 825.0,7521.9 640.5,7988.0 220.7,7988.0 2758.2,1550.2 2512.8,1451.6 2829.3,436.1 2816.3,227.2 2469.2,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0075/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07525397511876,42.38312434332607]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07279626430983,42.38497511068395]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.069237108,42.38235981472799]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07169481880892,42.380509047370104]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0076/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p76","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0076/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0076/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 5584.0,0.0 5371.7,840.4 5584.0,855.5 5584.0,7988.0 3309.1,7988.0 2886.8,7419.6 815.9,7597.5 0.0,5727.3 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0076/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07476415558715,42.38449203158848]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07286293038587,42.38664475445673]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0687229816953,42.38462167928031]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07062420689658,42.382468956412055]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0078/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p78","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0078/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0078/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3355.3,839.7 4729.2,504.2 4718.8,0.0 4873.5,0.0 4883.9,5920.8 4807.4,7988.0 -0.0,7988.0 0.0,-0.0 3247.1,0.0 3355.3,839.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0078/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5108.0,3680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0715394,42.3809351]}},{"type":"Feature","properties":{"resourceCoords":[5108.0,5516.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0707522,42.3796044]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p8","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0008/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0008/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"284.1,2709.4 997.3,2711.1 1004.2,0.0 5584.0,0.0 5584.0,2721.9 5359.1,2721.4 5350.3,5742.7 4071.4,6405.1 1618.8,7640.6 1394.8,7207.5 246.8,7205.1 284.1,2709.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0008/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03356732770264,42.383837970266555]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03012447304724,42.38383346217242]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03013314232963,42.38016981360008]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.03357599698504,42.38017432169421]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0082__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p82 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"3601.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1208.0"},{"label":"split_canvas_h","value":"2066.0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0082__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0082/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4801.6,1048.8 4802.5,928.9 4014.3,695.3 3883.9,1155.3 4109.0,1220.5 4049.0,1396.1 4763.2,1613.8 4801.6,1048.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0082__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[3601.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0674334405842,42.37469797181278]}},{"type":"Feature","properties":{"resourceCoords":[4809.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06695317421261,42.37427265259823]}},{"type":"Feature","properties":{"resourceCoords":[4809.6,2066.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06793184769346,42.37366096938605]}},{"type":"Feature","properties":{"resourceCoords":[3601.6,2066.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06841211406504,42.3740862886006]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0083/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p83","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0083/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0083/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1087.5,6953.6 2710.7,952.6 3126.4,896.6 3246.9,410.4 4453.3,351.2 4315.5,6694.4 1087.5,6953.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0083/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07330737456725,42.380161251467115]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07053722666855,42.38175261836666]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0674770739162,42.378804699918895]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0702472218149,42.37721333301935]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0084/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p84","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"22"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0084/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0084/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"201.8,7502.2 1351.2,843.8 4513.4,236.0 4724.6,1332.8 5584.0,1108.9 5584.0,1560.5 4782.6,1760.6 5584.0,6299.5 5584.0,7988.0 3862.5,7988.0 3657.9,6977.1 201.8,7502.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0084/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[876.0,3504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0699707,42.3802933]}},{"type":"Feature","properties":{"resourceCoords":[5600.0,6388.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0666291,42.3809425]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0085/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p85","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0085/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0085/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3443.7,7173.3 1037.1,7048.3 971.7,4994.9 1555.1,4608.2 1676.0,2362.9 -0.0,2272.7 -0.0,-0.0 5584.0,0.0 5584.0,2957.4 3854.8,2974.1 3867.3,6398.2 3431.4,6294.0 3443.7,7173.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0085/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06888538359715,42.38596818254179]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06585832386995,42.38465655768605]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06838070816907,42.38143545428054]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.07140776789628,42.38274707913628]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0086__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p86 [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":"5584.0"},{"label":"split_canvas_h","value":"7988.0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0086__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0086/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2222.4,0.0 0.0,0.0 0.0,7988.0 5584.0,7988.0 5584.0,2265.6 2524.8,2255.6 2230.0,2266.4 2230.0,2254.4 2224.8,885.2 2222.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0086__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[840.0,6024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0647293,42.3821032]}},{"type":"Feature","properties":{"resourceCoords":[840.0,800.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0675931,42.3833114]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0087/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p87","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0087/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0087/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1004.0,4569.1 1323.7,0.0 5584.0,0.0 5584.0,7988.0 4683.2,7988.0 4682.2,7032.0 814.9,7134.1 655.4,7988.0 597.0,6202.1 1004.0,4569.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0087/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4664.0,3788.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.065959,42.382619]}},{"type":"Feature","properties":{"resourceCoords":[4664.0,788.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0675931,42.3833114]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0088/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p88","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"20"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0088/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0088/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"734.3,7213.0 688.2,3375.8 1636.4,3388.4 1649.3,2495.0 -0.0,2471.3 -0.0,-0.0 5584.0,0.0 5584.0,217.0 4274.1,213.1 4264.6,3423.3 4971.7,3432.7 4943.0,7593.7 734.3,7213.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0088/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2356.0,4624.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0636463,42.3809889]}},{"type":"Feature","properties":{"resourceCoords":[2356.0,3404.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0632717,42.3814878]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0089/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p89","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0089/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0089/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"703.5,7512.8 720.0,3276.0 -0.0,3268.6 -0.0,0.0 5584.0,0.0 5584.0,7183.0 703.5,7512.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0089/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3096.0,7376.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0617859,42.3787067]}},{"type":"Feature","properties":{"resourceCoords":[720.0,3276.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0618325,42.3808828]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p9","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0009/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0009/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"384.0,4244.0 607.5,4245.1 614.5,1521.1 -0.0,1519.5 0.0,-0.0 5098.8,0.0 1457.6,3159.1 2704.7,4419.6 2720.0,4427.9 3037.9,6954.8 374.7,6942.3 384.0,4244.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3776.0,7228.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0281602,42.381219]}},{"type":"Feature","properties":{"resourceCoords":[384.0,4244.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0302661,42.3825855]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0090/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p90","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0090/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0090/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2081.3,102.6 5584.0,0.0 5584.0,7291.3 3719.2,7291.0 1464.6,7252.2 2081.3,102.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0090/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2260.0,3440.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0589515,42.3796736]}},{"type":"Feature","properties":{"resourceCoords":[1028.0,7252.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0606246,42.3783094]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0091/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p91","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0091/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0091/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2551.3,89.3 4699.7,0.0 4204.0,1189.2 5400.4,1202.1 5397.2,2504.1 3722.5,2873.0 3985.7,5673.3 5584.0,5743.2 5584.0,7988.0 3580.0,7988.0 3555.6,7703.5 1235.5,7311.2 2551.3,89.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0091/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.05769290434783,42.38081186903143]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.05436443686155,42.380190720325736]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.05555887760927,42.3766486222173]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.05888734509556,42.377269770923]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0092/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p92","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0092/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0092/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3413.7,7988.0 2996.9,6983.2 1509.1,7519.5 201.5,5045.9 1591.9,4077.9 1098.7,2880.6 -0.0,3318.2 -0.0,0.0 5584.0,0.0 5584.0,7988.0 3413.7,7988.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0092/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0541366,42.3810423]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0513451,42.3795155]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0543018,42.3765656]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0570933,42.3780924]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0093/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p93","metadata":[{"label":"streets","value":"15"},{"label":"intersections","value":"22"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0093/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0093/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5049.1,3577.6 3686.0,7393.0 893.7,6604.3 927.2,3078.8 1966.6,3037.8 2243.7,1323.9 4832.6,1019.4 5049.1,3577.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0093/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3608.0,5176.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0665763,42.378622]}},{"type":"Feature","properties":{"resourceCoords":[3168.0,1024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.065339,42.380298]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0094/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p94","metadata":[{"label":"streets","value":"21"},{"label":"intersections","value":"37"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0094/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0094/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4204.7,7724.3 660.1,7202.0 1712.2,3324.5 1300.0,812.3 3829.7,582.8 4286.6,3209.9 4204.7,7724.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0094/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3156.0,3044.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0644706,42.3785271]}},{"type":"Feature","properties":{"resourceCoords":[1300.0,812.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0644891,42.3798663]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0095/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p95","metadata":[{"label":"streets","value":"18"},{"label":"intersections","value":"25"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0095/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0095/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2475.8,6925.3 621.2,6570.9 1131.6,4255.1 1116.5,1586.0 4562.2,1409.5 4487.6,4176.6 4366.9,4176.0 4532.5,6879.3 2475.8,6925.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0095/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2168.0,5184.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0637004,42.3775342]}},{"type":"Feature","properties":{"resourceCoords":[2168.0,6108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0639775,42.3771612]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0096/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p96","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0096/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0096/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4523.6,7010.4 502.0,6707.7 711.0,4013.0 830.9,4029.7 1287.4,1303.9 5098.9,1564.5 5019.2,7204.9 4523.6,7010.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0096/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.0617168648645,42.37930292302456]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.058478508682,42.37837957134441]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06025402320967,42.37493327339752]}},{"type":"Feature","properties":{"resourceCoords":[0.0,7988.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-71.06349237939216,42.37585662507767]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0097/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p97","metadata":[{"label":"streets","value":"14"},{"label":"intersections","value":"21"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0097/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0097/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1519.9,178.6 5584.0,1259.2 5584.0,7988.0 5362.4,7988.0 4884.5,7521.4 4620.6,7938.3 3947.8,7381.0 2879.4,7711.7 2071.7,7490.2 1585.7,7988.0 132.1,7988.0 803.4,6870.7 665.6,6233.9 289.0,5726.9 1519.9,178.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0097/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[804.0,6872.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0602051,42.3748097]}},{"type":"Feature","properties":{"resourceCoords":[952.0,2752.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0597082,42.3766626]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0099/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Boston, Massachusetts | 1900 | sanborn03693_012 p99","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"13"}],"created":"2026-09-21T07:24:32Z","modified":"2026-09-21T07:24:32Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0099/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0099/info.json","type":"ImageService2","height":7988,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4985.5,0.0 4816.0,6720.1 1567.3,7069.6 108.2,6615.0 -0.0,6933.4 -0.0,-0.0 1633.8,424.2 1770.3,0.0 4985.5,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd376m:g3764m:g3764bm:g03693190005:03693_05_1900-0099/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4816.0,3188.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0673182,42.377767]}},{"type":"Feature","properties":{"resourceCoords":[4816.0,6720.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-71.0658077,42.3765478]}}]}}]}