{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03527_007.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Portland, Maine | 1954 | 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":"104"},{"label":"placed","value":"88"},{"label":"unplaced","value":"16"},{"label":"fit sources","value":"georef 44, georef-snap 39, snap:0 5"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"14 sheet(s) cut into 28 panels"},{"label":"unplaced pages","value":"p0 (tier 1, 43.66913,-70.27997 +/-257m); p12__2 (tier 1, 43.66683,-70.25470 +/-190m); p15__2 (tier 2, 43.66084,-70.25190 +/-148m); p18 (tier 1, 43.66137,-70.24639 +/-133m); p23__2 (tier 2, 43.65930,-70.25798 +/-160m); p2__2 (tier 2, 43.66811,-70.24936 +/-100m); p32__2 (tier 2, 43.65136,-70.25576 +/-100m); p33 (tier 2, 43.65320,-70.26568 +/-952m); p35__2 (tier 1, 43.66126,-70.26640 +/-100m); p36__2 (tier 1, 43.65050,-70.25810 +/-100m); p62__2 (tier 1, 43.64376,-70.27631 +/-220m); p65__2 (tier 2, 43.65273,-70.27977 +/-117m); p66__1 (tier 1, 43.64958,-70.27850 +/-226m); p66__2 (tier 1, 43.64825,-70.27821 +/-192m); p77 (tier 1, 43.66327,-70.27231 +/-100m); p83 (tier 1, 43.66048,-70.27707 +/-271m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0001/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p1","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0001/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0001/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3326.6,5400.0 2350.0,5400.0 -0.0,5400.0 0.0,-0.0 4352.0,-0.0 4352.0,4517.1 4352.0,4931.8 4066.4,5344.1 3326.6,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0001/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1128.0,3048.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.25527,43.669122]}},{"type":"Feature","properties":{"resourceCoords":[4096.0,5996.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2556686,43.666119]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0010/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p10","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0010/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0010/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4150.5,755.5 4264.1,2665.0 3224.9,2937.5 4098.3,5400.0 1403.0,5400.0 -0.0,3807.8 600.6,1050.5 4150.5,755.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0010/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25303890086433,43.66552367042997]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24955626575853,43.667228943152786]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24665176323276,43.66408090630947]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25013439833856,43.662375633586656]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0011/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p11","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"7"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0011/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0011/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,4919.7 2979.7,4930.9 2983.1,5400.0 1769.2,5400.0 1789.0,4283.4 1339.4,4266.4 1275.5,0.0 4164.1,0.0 4272.4,1567.9 4352.0,1569.3 4352.0,4919.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0011/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2996.0,1564.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2578404,43.6647205]}},{"type":"Feature","properties":{"resourceCoords":[780.0,4892.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2572647,43.6619736]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0012__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p12 [1]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"2227.2"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"3172.8"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0012__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0012/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2629.2,4441.2 2613.0,5400.0 3758.9,5400.0 3858.1,2524.2 1130.8,2435.2 1076.1,5400.0 1668.6,5400.0 1676.0,4413.0 2629.2,4441.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0012__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1676.0,4413.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2551542,43.6645983]}},{"type":"Feature","properties":{"resourceCoords":[3796.0,3266.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2544157,43.6662153]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0013/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p13","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0013/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0013/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,4968.1 -0.0,2876.0 1109.9,2843.8 1064.4,1636.5 598.6,1661.6 551.6,648.3 2282.9,530.9 2283.1,882.5 3815.2,704.1 4102.1,2548.1 4189.4,4610.1 -0.0,4968.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0013/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25481302145297,43.66405094445409]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25212766652554,43.66170622103766]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25612110376103,43.65927873802686]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25880645868847,43.66162346144329]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0014/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p14","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"19"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0014/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0014/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"492.6,3545.2 372.5,1822.8 872.0,1799.8 900.7,2042.7 2850.1,1709.9 4303.1,1678.3 3372.9,4585.7 323.5,5072.6 143.2,3549.2 492.6,3545.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0014/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3380.0,800.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.253325,43.665358]}},{"type":"Feature","properties":{"resourceCoords":[324.0,5072.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2529796,43.6616789]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0015__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p15 [1]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"12"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0015__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0015/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4245.1,347.6 617.0,400.1 760.0,2923.3 672.2,5062.0 3621.3,4855.0 4245.1,347.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0015__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2036.0,1880.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2525033,43.6606439]}},{"type":"Feature","properties":{"resourceCoords":[760.0,2920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2541009,43.6607473]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0016/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p16","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0016/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0016/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"256.1,4870.0 634.1,208.1 2952.5,307.2 3984.0,2626.7 3982.3,3113.6 3548.4,4595.4 2965.3,4744.4 3009.9,5400.0 2468.8,5400.0 2531.1,4855.4 1656.6,5078.8 871.2,5097.4 256.1,4870.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0016/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25301950964749,43.6618343135812]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25041214154142,43.66420655769935]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24637182566192,43.661849576310885]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.248979193768,43.659477332192736]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0017/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p17","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0017/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0017/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2770.4,528.4 3670.7,378.8 4352.0,110.1 4352.0,5400.0 1830.9,5400.0 1568.6,1522.0 2162.5,1532.2 2149.1,376.1 2770.4,528.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0017/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25098140619409,43.658955253917284]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24794650395803,43.66115063850088]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24420757209073,43.65840705924335]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24724247432678,43.65621167465976]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0019/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p19","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0019/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0019/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3531.2,1600.4 4027.5,4864.8 651.6,4967.7 1436.2,462.2 3599.3,521.7 3531.2,1600.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0019/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25063575208607,43.66125502387853]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24753468918767,43.65917961139537]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25106927732857,43.6563762058381]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25417034022696,43.65845161832126]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0020/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p20","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0020/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0020/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1301.3,1006.0 4352.0,633.2 4352.0,5400.0 -0.0,5400.0 -0.0,910.3 1301.3,1006.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0020/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1920.0,968.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2503701,43.6573689]}},{"type":"Feature","properties":{"resourceCoords":[288.0,968.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2515635,43.6563985]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0021/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p21","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0021/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0021/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"945.3,0.0 1099.6,0.0 1224.2,539.5 1926.4,1672.8 2197.7,0.0 3936.4,0.0 3956.7,4837.6 1354.5,4770.0 1381.0,5216.7 911.9,5299.9 945.3,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0021/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26560460652551,43.66104846478699]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2625293866493,43.663119110014165]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25900280637697,43.66033915453236]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26207802625318,43.65826850930518]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0022/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p22","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0022/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0022/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"469.2,4833.3 459.1,1484.1 544.8,1250.4 466.6,1028.6 502.8,0.0 4352.0,0.0 4352.0,4335.4 2703.9,4233.4 2721.4,4916.8 469.2,4833.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0022/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2631602218539,43.66266969888779]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26012687808266,43.6647581578919]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25656985986211,43.66201613394641]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25960320363335,43.659927674942296]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0023__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p23 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0023__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0023/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4001.8,4924.4 4054.7,2898.8 3985.6,2750.8 4106.5,1927.3 4200.2,1799.0 4352.0,1802.2 4352.0,1795.2 4352.0,1494.8 4352.0,1080.0 4352.0,674.0 838.9,585.9 472.2,5400.0 917.9,5400.0 845.2,4823.6 4001.8,4924.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0023__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3996.0,3692.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2579241,43.6583776]}},{"type":"Feature","properties":{"resourceCoords":[2308.0,1696.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2577507,43.6602039]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0024/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p24","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0024/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0024/info.json","type":"ImageService2","height":5400,"width":4452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"387.2,4875.9 500.6,2711.9 435.6,2562.0 581.2,1737.7 679.2,1610.8 820.4,1616.8 854.1,1617.6 884.4,484.3 3869.8,345.0 3549.7,1897.1 3195.4,2856.3 3172.1,3737.0 2421.4,3494.4 2118.8,4466.6 1980.8,5400.0 1277.9,5400.0 1334.6,5241.0 1039.2,4927.1 387.2,4875.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0024/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25593235378611,43.66038174713796]}},{"type":"Feature","properties":{"resourceCoords":[4452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25278672951288,43.658266277292824]}},{"type":"Feature","properties":{"resourceCoords":[4452.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25630855980869,43.6554864202032]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25945418408192,43.65760189004833]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0025/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p25","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0025/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0025/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"619.0,4379.1 504.8,3517.9 700.7,2528.9 771.0,967.8 4061.1,330.8 4125.7,1182.2 4076.2,1895.3 4352.0,2132.6 4352.0,5400.0 4154.0,5400.0 4037.1,4731.7 619.0,4379.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0025/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25314678071867,43.65922109973334]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25052127042738,43.65679183801125]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25465836328253,43.6544182654672]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25728387357381,43.656847527189285]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0026/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p26","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0026/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0026/info.json","type":"ImageService2","height":5400,"width":4452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"792.5,210.1 2779.1,298.5 3805.5,501.5 3088.0,4833.5 2386.1,4919.0 2375.4,5125.1 3765.6,5197.3 3762.3,5400.0 1475.6,5400.0 1415.8,5037.2 738.5,5249.2 792.5,210.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0026/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2594889357808,43.655981000242896]}},{"type":"Feature","properties":{"resourceCoords":[4452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25635434193941,43.65797978486905]}},{"type":"Feature","properties":{"resourceCoords":[4452.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25302689584596,43.65520956999816]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25616148968734,43.65321078537201]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0027/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p27","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0027/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0027/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1383.8,2851.7 315.9,2721.8 886.1,347.9 3070.7,872.0 3221.2,0.0 4278.5,0.0 3810.9,3130.7 3680.3,3117.5 3566.9,3760.2 3226.8,4023.5 3074.3,3952.0 3006.9,4650.1 1095.3,4100.4 1383.8,2851.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0027/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26337521289582,43.65695251468249]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26084038730244,43.65938629061166]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25669560220663,43.657094703328355]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25923042780002,43.654660927399185]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0028/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p28","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0028/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0028/info.json","type":"ImageService2","height":5400,"width":4452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3504.6,4566.6 3511.8,4832.2 80.4,4949.7 179.2,4695.6 479.9,1056.4 2940.2,1255.0 2903.0,168.0 4195.3,261.0 3719.1,4247.8 3504.6,4566.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0028/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26218404406877,43.658049279964644]}},{"type":"Feature","properties":{"resourceCoords":[4452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25924111914047,43.65582226809614]}},{"type":"Feature","properties":{"resourceCoords":[4452.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26294850772642,43.65322144498867]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26589143265473,43.65544845685717]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0029/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p29","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0029/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0029/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1500.3,4703.1 1373.0,654.6 1442.2,152.6 1698.7,176.1 1986.8,432.1 3699.7,877.6 3315.9,2234.5 2780.4,2162.8 2552.4,3252.9 3712.5,3593.5 3577.7,4722.8 1500.3,4703.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0029/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26413652666017,43.65325063941592]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2615675450522,43.65561247086844]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25754555207219,43.653289849940755]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26011453368015,43.65092801848824]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0002__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p2 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0002__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0002/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4080.8,5213.8 4051.8,3495.7 4352.0,3501.2 4352.0,3351.0 4047.6,3405.2 4043.4,2296.4 4352.0,2321.7 4352.0,-0.0 1160.8,0.0 1187.6,1344.4 0.0,1372.8 -0.0,4498.6 1411.1,4751.9 1403.2,4306.3 2111.5,4404.3 2098.3,4499.7 2276.8,4525.7 2285.3,4904.3 4080.8,5213.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0002__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2252.0,3104.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.249934,43.669307]}},{"type":"Feature","properties":{"resourceCoords":[3148.0,3104.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.249307,43.668888]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0003/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p3","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"18"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0003/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0003/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"382.4,5051.4 164.5,3901.6 1223.6,3784.0 1517.2,696.2 3186.1,531.0 3204.7,823.5 3350.7,811.5 3456.7,1846.3 4108.1,1777.7 4241.0,3449.8 3796.8,3499.7 3885.9,4459.4 382.4,5051.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0003/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2388.0,2660.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2480978,43.6667809]}},{"type":"Feature","properties":{"resourceCoords":[2388.0,604.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.249456,43.66785]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0030/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p30","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0030/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0030/info.json","type":"ImageService2","height":5400,"width":4452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3259.8,4409.2 1287.6,4743.9 1189.5,3625.6 -0.0,3531.1 -0.0,2432.0 531.8,2392.9 628.2,1004.6 3850.7,1187.8 3881.9,3896.6 3259.8,4409.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0030/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26238289464449,43.655140571859455]}},{"type":"Feature","properties":{"resourceCoords":[4452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2590884514785,43.65713936342857]}},{"type":"Feature","properties":{"resourceCoords":[4452.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25576104333811,43.654227837499064]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2590554865041,43.65222904592995]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0031/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p31","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0031/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0031/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"336.8,308.4 2479.8,678.8 2384.2,0.0 4352.0,0.0 4352.0,900.9 2626.1,1155.7 3741.0,4790.4 700.3,5038.0 721.9,1011.2 336.8,308.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0031/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2571714179746,43.65510159745128]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25391643495607,43.653150145928564]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25723957386724,43.650207298512555]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26049455688577,43.65215875003527]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0032__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p32 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4452.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0032__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0032/info.json","type":"ImageService2","height":5400,"width":4452},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"660.3,0.0 0.0,0.0 0.0,5400.0 511.2,5400.0 2104.8,5400.0 2628.4,5400.0 3404.0,5400.0 4452.0,5400.0 4452.0,1335.2 4452.0,1029.2 3750.4,1744.8 4439.9,30.1 659.5,634.2 660.3,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0032__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2581762160221,43.65065005446783]}},{"type":"Feature","properties":{"resourceCoords":[4452.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2559417871872,43.653304418967885]}},{"type":"Feature","properties":{"resourceCoords":[4452.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2514817814171,43.65134796841823]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.253716210252,43.648693603918176]}},{"type":"Feature","properties":{"resourceCoords":[1404.0,560.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.257009,43.6512846]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0034/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p34","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0034/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0034/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2881.5,0.0 3182.4,0.0 2488.8,763.9 2590.2,789.5 3269.6,5400.0 -0.0,5400.0 -0.0,957.3 1956.5,1010.0 2881.5,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0034/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2316.0,764.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.252042,43.656147]}},{"type":"Feature","properties":{"resourceCoords":[3792.0,764.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2509502,43.6568088]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0035__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p35 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0035__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0035/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1976.2,4930.4 2450.5,4677.2 3186.5,3873.3 3673.2,2943.8 4074.7,1601.2 3911.0,926.0 2318.4,1204.8 2292.1,1056.4 2791.0,849.2 3765.3,-0.0 -0.0,0.0 -0.0,3385.1 499.6,5157.4 -0.0,5293.3 -0.0,5400.0 1825.6,5400.0 1976.2,4930.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0035__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3912.0,924.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2638481,43.6606524]}},{"type":"Feature","properties":{"resourceCoords":[1640.0,1200.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2652987,43.6619059]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0036__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p36 [1]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"21"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0036__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0036/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3402.7,311.9 2706.2,456.7 1343.9,0.0 551.7,5091.7 3964.7,4813.5 3402.7,311.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0036__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3596.0,1912.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2628138,43.6598141]}},{"type":"Feature","properties":{"resourceCoords":[1728.0,3408.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2634678,43.6582126]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0037/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p37","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0037/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0037/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,246.7 4352.0,4961.4 3534.6,4976.1 3524.5,5400.0 -0.0,5400.0 -0.0,3011.4 90.6,3363.5 766.3,2244.0 1024.1,897.2 4352.0,246.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0037/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2280.0,1368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.26578,43.659098]}},{"type":"Feature","properties":{"resourceCoords":[4140.0,1004.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.264975,43.657924]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0038/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p38","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0038/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0038/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3533.9,5127.3 761.0,4926.8 1475.7,266.1 3287.6,204.9 3941.9,2569.9 3533.9,5127.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0038/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26455858192921,43.65893606294109]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26288009303006,43.656158557432605]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26761024055213,43.65464112814174]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26928872945128,43.657418633650224]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0039/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p39","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0039/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0039/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3625.3,2697.5 3610.6,4688.5 1043.4,4695.0 900.0,2696.0 3625.3,2697.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0039/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3620.0,3660.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.270417,43.655473]}},{"type":"Feature","properties":{"resourceCoords":[900.0,2696.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2732021,43.6556628]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0004/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p4","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0004/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0004/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"142.1,5016.4 -0.0,104.4 3172.5,0.0 3356.8,508.4 3367.1,0.0 4352.0,0.0 4352.0,4755.3 3814.7,4734.9 3817.9,5400.0 1811.0,5400.0 142.1,5016.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0004/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24891586511725,43.66838711417749]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2461920909237,43.67063993334282]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24235476031609,43.668177990525464]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24507853450964,43.665925171360136]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0040/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p40","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0040/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0040/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"756.0,1592.0 -0.0,1597.3 -0.0,-0.0 3089.0,0.0 3527.6,4595.7 3497.9,4965.1 738.7,4563.3 756.0,1592.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0040/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[756.0,2548.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.270417,43.655473]}},{"type":"Feature","properties":{"resourceCoords":[756.0,1592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2706397,43.6561271]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0041/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p41","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0041/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0041/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,3207.3 2722.5,4922.9 2353.1,4575.7 246.3,3647.8 941.8,2198.0 1318.9,2364.9 1340.8,933.3 4218.0,996.0 4352.0,3207.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0041/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[248.0,3648.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.270689,43.652163]}},{"type":"Feature","properties":{"resourceCoords":[4216.0,996.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2672551,43.6542803]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0042/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p42","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0042/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0042/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1656.5,4514.8 206.0,4451.3 262.2,2508.5 46.1,1325.4 2357.5,1169.4 4352.0,3957.4 1656.5,4514.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0042/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1896.0,2768.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.265698,43.6544791]}},{"type":"Feature","properties":{"resourceCoords":[248.0,2768.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2672551,43.6542803]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0043__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p43 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0043__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0043/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3909.4,5006.5 3883.2,3101.8 4113.0,1346.0 4346.4,380.0 2789.6,366.9 2779.2,363.4 2184.8,1361.2 2167.2,2291.6 1636.4,2556.4 1484.8,2470.0 1319.6,2636.0 1198.8,2758.0 1164.8,2792.0 154.5,3633.7 338.4,3763.4 507.5,3765.1 492.0,5052.0 3909.4,5006.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0043__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[492.0,5052.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2675592,43.6521491]}},{"type":"Feature","properties":{"resourceCoords":[4348.0,380.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2618276,43.6531646]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0043__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p43 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2995.6"},{"label":"split_canvas_h","value":"3762.4"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0043__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0043/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,3762.4 1164.8,2792.0 1198.8,2758.0 1319.6,2636.0 1484.8,2470.0 1636.4,2556.4 2167.2,2291.6 2184.8,1361.2 2995.6,0.0 0.0,0.0 0.0,3762.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0043__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26510307961422,43.65520250132996]}},{"type":"Feature","properties":{"resourceCoords":[2995.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26285829126104,43.65397319475274]}},{"type":"Feature","properties":{"resourceCoords":[2995.6,3762.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2649778914562,43.65191826364641]}},{"type":"Feature","properties":{"resourceCoords":[0.0,3762.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26722267980938,43.65314757022363]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0044/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p44","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0044/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0044/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"466.2,4972.7 482.9,3048.3 754.8,1280.2 1012.4,309.8 3703.9,375.0 3490.8,4869.8 3474.4,5040.1 466.2,4972.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0044/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1420.0,1936.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2624162,43.6520775]}},{"type":"Feature","properties":{"resourceCoords":[2308.0,4972.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.263414,43.6499961]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0045/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p45","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0045/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0045/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,5354.3 3112.0,3830.7 3130.9,4942.2 686.9,4962.3 844.9,444.0 3295.5,439.2 3351.4,1101.7 4044.8,1043.1 4352.0,4391.7 4352.0,5354.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0045/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3076.0,2020.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2589094,43.6502484]}},{"type":"Feature","properties":{"resourceCoords":[776.0,2020.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2606916,43.651187]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0046/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p46","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0046/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0046/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0,5400 0,0 4352,0 4352,5400 0,5400\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0046/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2364.0,976.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2577607,43.6501923]}},{"type":"Feature","properties":{"resourceCoords":[3568.0,832.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2572028,43.6509867]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0047/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p47","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0047/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0047/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1158.7,3734.7 1100.1,2745.6 1405.4,2874.5 1477.3,2958.5 1565.1,2175.0 1205.1,2028.6 1195.9,267.3 4352.0,1196.5 4352.0,2309.3 3936.7,2189.6 3533.0,4154.3 2514.7,4703.2 2116.5,5400.0 1352.8,5400.0 903.1,4928.4 1418.8,4602.0 1476.0,3653.2 1158.7,3734.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0047/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27752842150628,43.655612579926704]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27390805470506,43.65713526496616]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27131497815004,43.6538621816362]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27493534495126,43.652339496596746]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0048/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p48","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0048/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0048/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3936.5,3834.4 1313.4,4377.4 669.5,3140.8 749.8,1984.5 2674.0,268.1 3326.6,1032.4 4098.1,2204.0 3700.6,2276.7 3936.5,3834.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0048/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[668.0,3140.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.273178,43.6536417]}},{"type":"Feature","properties":{"resourceCoords":[3936.0,3836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.270689,43.652163]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0049/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p49","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0049/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0049/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"231.2,4542.4 -0.0,4610.2 -0.0,2419.9 257.4,2285.8 2120.1,219.8 2520.9,331.5 3152.8,0.0 3159.7,509.6 4352.0,842.0 4352.0,4937.7 509.3,4941.0 523.4,5400.0 359.3,5400.0 231.2,4542.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0049/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3160.0,528.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2731771,43.6526703]}},{"type":"Feature","properties":{"resourceCoords":[3160.0,4952.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.273233,43.649536]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0005/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p5","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0005/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0005/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4304.7,4186.2 4352.0,5400.0 0.0,5400.0 0.0,3582.6 590.1,3473.7 1175.2,1680.2 1066.0,1211.0 3548.3,2178.4 3506.5,3495.6 4304.7,4186.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0005/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25052092574809,43.66281176152674]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24813332157363,43.66531431378184]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24387098449874,43.663156035509076]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2462585886732,43.660653483253974]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0050/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p50","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0050/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0050/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1979.9,4423.1 169.2,4510.9 203.8,363.3 3719.6,1396.3 4118.7,1688.2 2239.0,4237.6 1979.9,4423.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0050/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1348.0,2704.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.270912,43.650796]}},{"type":"Feature","properties":{"resourceCoords":[336.0,4512.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.271901,43.649534]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0051/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p51","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0051/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0051/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2364.0,1164.0 2749.7,1288.6 4352.0,893.3 4352.0,3576.5 4040.3,3567.5 4352.0,4571.5 269.9,4398.1 329.5,3666.8 2364.0,1164.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0051/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27301754722271,43.649193322158496]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26970360836442,43.65103347677582]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26657021313385,43.64803712102139]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26988415199213,43.64619696640406]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0052/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p52","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0052/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0052/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,3269.3 310.9,3312.5 1092.6,818.0 3948.0,844.0 3925.5,4287.4 539.7,4389.4 0.0,4314.1 0.0,3269.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0052/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1356.0,2504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2677115,43.6500035]}},{"type":"Feature","properties":{"resourceCoords":[3948.0,844.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2675592,43.6521491]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0053/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p53","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0053/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0053/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1168.6,4338.7 1069.8,502.9 4096.2,535.7 3968.9,2244.0 3009.3,5114.2 1168.6,4338.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0053/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1912.0,3108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2656801,43.6489377]}},{"type":"Feature","properties":{"resourceCoords":[2944.0,1660.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2640628,43.6493274]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0054/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p54","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0054/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0054/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1921.2,5284.4 238.9,4576.6 1087.0,2070.6 1241.3,187.3 3699.7,162.7 3729.1,1599.1 4201.6,3118.6 4352.0,4173.6 4352.0,4867.5 3920.1,5400.0 2168.0,4566.7 1921.2,5284.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0054/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26327830486336,43.65018741047834]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25992698180751,43.64841576729334]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26294367351376,43.64538556676725]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26629499656961,43.64715720995225]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0055/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p55","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0055/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0055/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,1313.6 4352.0,5400.0 0.0,5400.0 0.0,-0.0 2080.5,1614.5 2773.4,1625.1 3829.2,1491.1 4352.0,1313.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0055/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26504388846817,43.6451466604873]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26266111155074,43.64761893021821]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25845159014438,43.64546438179188]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2608343670618,43.64299211206097]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0056/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p56","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0056/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0056/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"209.1,3554.4 123.3,950.5 1346.0,949.3 1249.1,0.0 4352.0,0.0 4352.0,4444.9 519.3,4569.0 209.1,3554.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0056/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25946563205126,43.64978607131119]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25622479377553,43.648010476126515]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25924820215401,43.64508016150583]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26248904042974,43.646855756690506]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0057/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p57","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0057/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0057/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"525.1,789.7 2501.5,913.8 2506.5,522.3 4310.4,638.9 4292.0,1748.5 3689.2,1696.2 3394.2,4182.3 4352.0,4288.3 4352.0,4581.1 535.5,4616.4 525.1,789.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0057/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26661779798526,43.649169741652656]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2642249330894,43.64667213332311]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26847770659462,43.64450851821565]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27087057149049,43.6470061265452]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0058/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p58","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"1"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0058/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0058/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,2343.9 2460.3,1979.8 4149.5,5400.0 -0.0,5400.0 -0.0,-0.0 2493.3,0.0 2507.6,605.4 4352.0,402.3 4352.0,2343.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0058/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2680453351065,43.64554610510818]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26434472154193,43.6469891964876]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26186424592935,43.64367451079673]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26556485949392,43.64223141941731]}},{"type":"Feature","properties":{"resourceCoords":[3608.0,492.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.264751,43.64644]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0059/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p59","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0059/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0059/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3840.5,4892.8 3994.9,5400.0 3294.8,5400.0 3022.5,4358.6 1003.8,4876.4 991.1,5400.0 -0.0,5400.0 0.0,-0.0 864.2,0.0 976.5,816.3 1146.5,819.1 1139.5,347.8 3884.8,403.2 3840.5,4892.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0059/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27691605831392,43.64980564282796]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27279149463996,43.6498155231531]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2727746707186,43.64608618498566]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27689923439256,43.64607630466052]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0006/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p6","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"16"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0006/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0006/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1172.2,3786.1 368.0,3132.5 388.6,422.2 3931.7,511.9 3420.4,4759.0 3171.7,4745.9 3093.0,5400.0 0.0,5400.0 0.0,5019.9 1247.8,4979.0 1172.2,3786.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0006/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1932.0,2368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.245529,43.664641]}},{"type":"Feature","properties":{"resourceCoords":[368.0,3132.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.245838,43.663431]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0060/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p60","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0060/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0060/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"923.8,296.8 3747.6,232.1 3701.8,3472.8 1146.5,5288.0 971.7,4762.8 923.8,296.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0060/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27410812362972,43.649753156055645]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2699623697675,43.64970087077522]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27005139941708,43.64595236626416]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2741971532793,43.64600465154459]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0061/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p61","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0061/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0061/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,5400.0 -0.0,5400.0 -0.0,972.4 324.7,103.6 886.1,526.5 4010.0,556.2 3974.1,1292.9 4352.0,1301.7 4352.0,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0061/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2660.0,3308.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.270176,43.645203]}},{"type":"Feature","properties":{"resourceCoords":[772.0,1300.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2727665,43.6455848]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0062__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p62 [1]","metadata":[{"label":"streets","value":"1"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3021.6"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"2378.4"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0062__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0062/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,5400.0 4352.0,3760.0 2273.5,3139.4 2165.1,3520.0 1224.2,3276.5 1249.3,3179.6 659.6,3327.6 0.0,3443.2 0.0,3655.2 -0.0,5400.0 4352.0,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0062__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,3021.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27810618886679,43.646031656728894]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,3021.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27403789617331,43.646802362246966]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27345403069907,43.645196293966166]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27752232339255,43.644425588448094]}},{"type":"Feature","properties":{"resourceCoords":[760.0,4440.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2770474,43.645208]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0063/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p63","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0063/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0063/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4256.7,4940.0 899.5,4262.2 1395.4,3106.5 1307.6,3062.9 1295.2,2524.5 1620.4,2582.0 2491.1,552.6 4233.0,370.2 4352.0,4082.1 4256.7,4940.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0063/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2769095230707,43.65762703215498]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27517858090806,43.65483554677048]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27993243345949,43.653270663477166]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28166337562213,43.656062148861665]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0064/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p64","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0064/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0064/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"231.6,4141.9 257.9,371.8 340.1,-0.0 1208.5,-0.0 962.0,337.2 987.0,434.0 1126.6,436.4 1980.4,314.9 1879.1,-0.0 2838.9,-0.0 3199.2,500.1 3355.6,323.7 4222.2,2780.6 4352.0,3001.3 4352.0,5239.8 1172.0,4229.3 231.6,4141.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0064/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27534509088184,43.65507964535533]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27349498522705,43.65238153461942]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27808962732304,43.650708848859715]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27993973297784,43.65340695959562]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0065__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p65 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0065__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0065/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1867.2,591.8 690.3,720.9 801.6,1864.0 505.8,3140.5 695.6,3351.7 395.5,3428.1 -0.0,4143.6 -0.0,5400.0 3234.8,5400.0 3229.2,3543.6 4352.0,3564.0 4352.0,871.0 1867.2,591.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0065__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[684.0,628.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2787038,43.6537034]}},{"type":"Feature","properties":{"resourceCoords":[788.0,1600.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2795654,43.6534651]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0067/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p67","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0067/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0067/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4087.7,1147.8 4053.6,0.0 4352.0,0.0 4352.0,5400.0 -0.0,5400.0 77.0,3429.7 1067.0,3409.5 1120.6,816.8 582.7,773.7 563.8,0.0 1759.1,0.0 1780.3,856.0 4087.7,1147.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0067/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.29425171039172,43.659079156183736]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.29025164767134,43.65831738179819]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.29154896696609,43.65470115187474]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.29554902968647,43.655462926260284]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0068/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p68","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0068/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0068/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2567.2,3600.8 2972.2,3606.5 3441.4,3456.9 3419.0,4177.0 3527.3,4191.2 3533.8,4627.2 4008.6,4728.3 3873.4,5033.2 3458.6,5400.0 2103.8,5400.0 2130.5,3742.3 1984.9,3739.3 1991.3,4308.9 858.5,4140.8 854.9,3716.0 266.9,3703.9 270.0,4087.8 534.3,4114.7 487.2,5400.0 -0.0,5400.0 -0.0,-0.0 2618.0,0.0 2567.2,3600.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0068/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1408.0,2956.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2912511,43.6596201]}},{"type":"Feature","properties":{"resourceCoords":[2464.0,388.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2881019,43.6627548]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0069__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p69 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0069__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0069/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3512.3,781.2 2831.9,0.0 1927.6,0.0 1927.6,712.4 1928.0,2318.4 1523.6,2968.0 0.0,2924.0 0.0,5400.0 1862.7,5400.0 2054.8,4853.4 3012.3,4625.2 2945.6,4346.4 4165.2,4067.9 3906.4,2375.0 4104.9,1027.3 3512.3,781.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0069__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3012.0,4628.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2839621,43.6549268]}},{"type":"Feature","properties":{"resourceCoords":[4208.0,4340.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2839339,43.6558167]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0069__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p69 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1928.0"},{"label":"split_canvas_h","value":"2968.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0069__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0069/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"33.9,508.7 -0.0,682.7 52.7,681.0 221.5,654.3 33.9,508.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0069__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28365249327486,43.65459825609784]}},{"type":"Feature","properties":{"resourceCoords":[1928.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28249655505532,43.65358321941761]}},{"type":"Feature","properties":{"resourceCoords":[1928.0,2968.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28464111822446,43.65228666350243]}},{"type":"Feature","properties":{"resourceCoords":[0.0,2968.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.285797056444,43.65330170018266]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0007/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p7","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0007/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0007/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0,5400 0,0 4352,0 4352,5400 0,5400\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0007/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24340032607347,43.665089156784724]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24038692619187,43.663027859875115]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24389770537107,43.66030388215435]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.24691110525266,43.66236517906396]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0070/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p70","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0070/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0070/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"635.9,2550.5 1134.2,1114.3 1582.6,315.0 2652.0,303.8 2648.9,0.0 3974.7,0.0 3997.3,798.3 4168.0,838.6 4000.9,925.7 4027.7,1874.8 4222.3,5322.6 4263.4,5400.0 4162.5,5400.0 4091.0,4119.5 685.6,5024.4 522.9,4300.8 508.3,3473.7 266.2,3327.2 530.2,3167.5 635.9,2550.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0070/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[732.0,2280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2821626,43.653566]}},{"type":"Feature","properties":{"resourceCoords":[2652.0,308.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2839621,43.6549268]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0071/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p71","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0071/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0071/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,0.0 4352.0,3847.9 3648.8,4467.7 3576.4,4384.8 2978.3,4727.1 1152.7,5400.0 973.1,5400.0 682.6,4493.0 455.9,2753.0 829.0,271.0 1738.8,228.9 1760.1,0.0 4352.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0071/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28846129823125,43.65617258840134]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28739369475828,43.65897420248316]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28262242322218,43.65800905451089]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28369002669515,43.65520744042907]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0072/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p72","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0072/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0072/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1243.0,571.6 1334.2,265.8 4352.0,871.6 4352.0,1494.1 2570.9,5400.0 2243.4,5400.0 747.3,4786.7 -0.0,4613.8 -0.0,960.1 626.5,859.7 557.9,588.3 1243.0,571.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0072/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2796799236845,43.65910035427793]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27785555069225,43.65633088990313]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28257200864063,43.65468157646713]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28439638163287,43.65745104084193]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0073/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p73","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0073/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0073/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1930.4,0.0 4352.0,664.4 4352.0,5339.6 3929.2,5224.4 -0.0,3846.7 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0073/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28532203409998,43.660112814915344]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28161103590682,43.66151685806706]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27921982751803,43.65816208213129]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28293082571119,43.656758038979575]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0074/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p74","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0074/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0074/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1128.6,0.0 2548.0,0.0 2904.1,427.7 3308.0,91.3 3631.6,4062.9 4352.0,4038.4 4352.0,5352.2 1374.2,4248.9 1215.6,4243.8 622.6,3970.4 722.5,3186.4 -0.0,3300.9 -0.0,615.1 1067.0,483.8 1128.6,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0074/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1368.0,3072.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.279219,43.659101]}},{"type":"Feature","properties":{"resourceCoords":[1744.0,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.280367,43.660763]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0075/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p75","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0075/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0075/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5400.0 0.0,0.0 581.9,0.0 573.2,465.9 2987.3,303.1 3709.3,3992.0 4352.0,4053.7 4352.0,5400.0 -0.0,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0075/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28030164848798,43.66242671792625]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27710101884243,43.66433959350995]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27384307177427,43.661446330800686]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27704370141981,43.65953345521699]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0076/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p76","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0076/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0076/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,4006.9 0.0,248.0 3544.9,560.7 3617.5,1854.2 3969.7,1990.1 4293.0,2303.5 3619.5,1962.6 3421.6,4991.5 0.0,4006.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0076/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2416.0,4704.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2731781,43.6628904]}},{"type":"Feature","properties":{"resourceCoords":[3536.0,1164.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.275088,43.665045]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0078/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p78","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0078/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0078/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 4352.0,0.0 4352.0,5400.0 -0.0,5400.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0078/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27115613946219,43.662318249651136]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26975561595867,43.663469247131914]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26779524565372,43.66220323926162]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26919576915724,43.661052241780844]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0079/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p79","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0079/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0079/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,3795.9 -0.0,1356.5 1715.4,217.8 1725.2,0.0 4352.0,0.0 4352.0,1530.9 3814.2,5083.7 1156.5,5069.6 -0.0,3795.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0079/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28369627972735,43.664413655481574]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28071056887356,43.666479841128066]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.2771913840362,43.66378095379124]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28017709488999,43.66171476814475]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0008/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p8","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0008/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0008/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"250.6,410.8 1890.3,385.9 1888.7,722.5 3845.5,647.9 3823.5,0.0 4352.0,0.0 4352.0,5400.0 -0.0,5400.0 -0.0,3924.4 249.5,3907.7 250.6,410.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0008/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2700.0,392.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.243637,43.667438]}},{"type":"Feature","properties":{"resourceCoords":[256.0,1388.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2445648,43.6657045]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0080/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p80","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0080/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0080/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 238.1,0.0 4352.0,0.0 4352.0,691.2 3127.3,881.8 3647.4,5000.0 320.7,5152.0 298.5,3973.2 -0.0,3978.4 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0080/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28129652529877,43.66617267142294]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27823666235265,43.66820616467001]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27477306232102,43.665440326789664]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27783292526713,43.663406833542595]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0081__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p81 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3140.8"},{"label":"split_canvas_w","value":"1940.8"},{"label":"split_canvas_h","value":"2259.2"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0081__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0081/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"989.4,4604.6 -0.0,3973.1 -0.0,5400.0 517.3,5400.0 1198.7,4433.7 1028.5,4320.8 989.4,4604.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0081__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,3140.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28154181441639,43.66162072220275]}},{"type":"Feature","properties":{"resourceCoords":[1940.8,3140.8],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28103366089582,43.66292354263548]}},{"type":"Feature","properties":{"resourceCoords":[1940.8,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27893120193916,43.662496210658546]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27943935545973,43.66119339022581]}},{"type":"Feature","properties":{"resourceCoords":[1660.7,4760.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.279599,43.662429]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0081__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p81 [2]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0081__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0081/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"331.6,1650.9 1428.3,1747.5 1601.7,2088.1 1765.1,2007.9 2814.6,4182.1 2708.5,1809.7 4156.0,1849.0 4033.7,4937.4 3568.5,4236.5 2869.1,4221.6 2719.9,4320.6 3240.1,5400.0 3445.4,5400.0 3458.2,4943.5 4033.7,4938.2 4015.4,5400.0 4352.0,5400.0 4352.0,0.0 523.5,0.0 933.4,781.5 787.9,855.2 331.6,1650.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0081__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4112.0,3028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.281026,43.66373]}},{"type":"Feature","properties":{"resourceCoords":[2068.0,3028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2825152,43.6628051]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0082/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p82","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"7"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0082/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0082/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4012.6,3305.7 3526.7,5400.0 170.8,5400.0 157.1,5286.2 -0.0,5322.6 -0.0,-0.0 4352.0,-0.0 4037.6,119.3 4012.6,3305.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0082/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3572.0,5088.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.278227,43.655863]}},{"type":"Feature","properties":{"resourceCoords":[4040.0,268.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.273476,43.6563823]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0084/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p84","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0084/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0084/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,2241.3 1877.2,0.0 4352.0,0.0 4352.0,2449.1 4204.2,2454.0 4204.5,4040.7 3124.3,3531.9 3245.4,4422.0 2044.7,3659.5 2415.7,3205.0 1850.2,2931.8 1405.5,3885.7 765.1,3574.6 0.0,4802.5 0.0,3919.2 419.1,3419.2 0.0,3217.2 0.0,2241.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0084/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28500625780826,43.66045031242079]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28337529791139,43.66320457919367]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27868438805848,43.66173022460915]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.28031534795535,43.658975957836276]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0085/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p85","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0085/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0085/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,3056.9 -0.0,2842.7 4329.0,2786.1 4352.0,5400.0 1890.2,5400.0 2054.3,5037.0 626.9,4384.2 714.8,3087.1 -0.0,3056.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0085/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27873357671115,43.66108134745707]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27548628966616,43.662970905909084]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27226813392684,43.66003539499295]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27551542097183,43.65814583654094]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0086/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p86","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0086/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0086/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3402.6,0.0 4352.0,2223.2 4352.0,3528.0 4204.7,3826.5 2019.3,4956.0 1973.0,5316.4 -0.0,5400.0 -0.0,4818.8 404.3,4843.0 -0.0,1829.0 0.0,0.0 3402.6,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0086/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25821372992127,43.666204140539506]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25530934909817,43.66843172908512]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25151515049178,43.66580643341251]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.25441953131488,43.663578844866905]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0087__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p87 [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":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0087__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0087/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"409.9,5400.0 4166.1,4143.8 4352.0,3986.4 4352.0,3885.3 4049.6,3427.9 2801.6,3156.8 2426.0,2750.4 2096.1,472.9 1783.5,0.0 -0.0,-0.0 -0.0,5400.0 409.9,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0087__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[336.0,1076.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2866889,43.6640219]}},{"type":"Feature","properties":{"resourceCoords":[868.0,2112.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2862015,43.6624563]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0087__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p87 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"2027.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2324.4"},{"label":"split_canvas_h","value":"3493.6"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0087__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0087/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,0.0 2027.6,0.0 2426.0,2750.4 2801.6,3156.8 4352.0,3493.6 4352.0,944.0 4352.0,540.0 4352.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0087__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2554.8,2425.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2916293,43.6548221]}},{"type":"Feature","properties":{"resourceCoords":[2243.3,328.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2907703,43.657595]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0088/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p88","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0088/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0088/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"372.4,0.0 4352.0,0.0 4352.0,5400.0 4095.8,5400.0 4116.1,4619.3 2823.1,4585.7 2823.1,4585.7 170.7,4516.8 372.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0088/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27875338651283,43.66698168382279]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27616824167517,43.6693254255933]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27217612279131,43.66698873655752]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27476126762897,43.66464499478701]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0089/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p89","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0089/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0089/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,0.0 4352.0,5400.0 1135.9,5400.0 0.0,5400.0 0.0,3975.7 397.0,4088.4 568.4,1051.4 536.3,0.0 4352.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0089/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27555999830652,43.664906502145016]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27289338972577,43.66719955156329]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.26898776311053,43.66478913717332]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-70.27165437169128,43.662496087755045]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0009/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Portland, Maine | 1954 | sanborn03527_007 p9","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"}],"created":"2026-09-21T15:45:21Z","modified":"2026-09-21T15:45:21Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0009/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0009/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3789.1,5400.0 3747.2,4855.8 2426.6,4947.6 2384.6,3372.7 2067.7,3264.4 770.4,3430.6 774.5,2871.1 525.9,2806.1 531.3,964.7 426.3,-0.0 1291.3,-0.0 1353.1,366.8 4352.0,450.4 4352.0,4000.3 4124.7,3944.9 4170.4,5400.0 3789.1,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd373m:g3734m:g3734pm:g3734pm_g03527195401:03527_01_1954-0009/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2696.0,3468.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2526,43.666283]}},{"type":"Feature","properties":{"resourceCoords":[520.0,1536.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-70.2524681,43.6683218]}}]}}]}