{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03573_043.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Baltimore, Maryland | 1953 | 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":"103"},{"label":"placed","value":"87"},{"label":"unplaced","value":"16"},{"label":"fit sources","value":"georef 52, georef-snap 35, georef-street 1"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"9 sheet(s) cut into 20 panels"},{"label":"unplaced pages","value":"p0 (tier 1, 39.33855,-76.63633 +/-272m); p624 (tier 1, 39.33364,-76.62837 +/-275m); p625 (tier 1, 39.31228,-76.62713 +/-257m); p627__2 (tier 2, 39.31325,-76.61805 +/-117m); p627__3 (tier 2, 39.31325,-76.61805 +/-117m); p627__4 (tier 1, 39.31636,-76.62194 +/-100m); p638 (tier 2, 39.32132,-76.62066 +/-261m); p650 (tier 1, 39.33234,-76.61919 +/-256m); p662__2 (tier 1, 39.33011,-76.61478 +/-106m); p676__2 (tier 1, 39.33868,-76.63614 +/-100m); p682__2 (tier 1, 39.34296,-76.63547 +/-100m); p691 (tier 1, 39.33034,-76.65067 +/-276m); p692__1 (tier 1, 39.32866,-76.63937 +/-263m); p699A__2 (tier 4, 39.32670,-76.62616 +/-2454m); p699__2 (tier 2, 39.33774,-76.62018 +/-622m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0612/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p612","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0612/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0612/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,5400.0 -0.0,5400.0 -0.0,1122.0 768.0,1195.3 780.0,492.0 3912.7,768.0 3698.7,3201.9 4135.6,3605.6 3774.4,4040.1 4352.0,4082.9 4352.0,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0612/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2224.0,1740.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6410816,39.311987]}},{"type":"Feature","properties":{"resourceCoords":[3172.0,4772.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6425125,39.3100689]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0613/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p613","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0613/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0613/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"700.6,2067.9 -0.0,2122.7 0.0,-0.0 4352.0,0.0 4352.0,609.5 3166.8,556.8 3166.7,1173.6 3779.2,1214.8 3790.2,5192.3 723.5,5209.2 700.6,2067.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0613/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3024.0,2256.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6393658,39.3141944]}},{"type":"Feature","properties":{"resourceCoords":[3024.0,5196.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6377616,39.3125601]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0614/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p614","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0614/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0614/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1123.8 -0.0,485.2 1206.9,549.1 1206.8,0.0 4352.0,0.0 4352.0,353.0 3915.3,42.5 3592.9,495.7 4352.0,674.4 4352.0,2292.0 2953.8,4186.7 2952.1,5207.9 636.0,5216.0 623.8,1165.6 -0.0,1123.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0614/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[636.0,2228.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6388136,39.314517]}},{"type":"Feature","properties":{"resourceCoords":[636.0,5216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6372131,39.3128856]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0615/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p615","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0615/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0615/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,5400.0 1010.9,5400.0 1349.7,4925.0 868.9,4542.5 920.2,878.2 4125.7,1001.2 3509.6,1874.0 4352.0,1902.9 4352.0,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0615/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[884.0,3020.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6401012,39.3111726]}},{"type":"Feature","properties":{"resourceCoords":[884.0,4588.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.641173,39.3105146]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0616/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p616","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0616/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0616/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"894.9,418.8 3681.0,391.2 3693.5,5379.6 3166.3,5029.4 3019.5,5249.0 3252.9,5400.0 -0.0,5400.0 -0.0,2996.3 882.0,3579.5 894.9,418.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0616/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6394716458024,39.31191553041011]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63639393284873,39.31370049100412]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63355144556381,39.310724936150415]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63662915851748,39.308939975556406]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0617/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p617","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0617/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0617/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2220.3,4756.6 1626.8,3925.4 1667.7,1576.6 725.5,261.4 -0.0,606.7 -0.0,-0.0 4352.0,0.0 4352.0,136.8 4260.7,211.1 4167.5,4007.7 3294.4,4003.1 2220.3,4756.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0617/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63767002524871,39.31706925393403]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63383403079307,39.31716192812727]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63368644195482,39.31345347309777]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63752243641046,39.31336079890453]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0618/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p618","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0618/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0618/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"561.1,5400.0 584.5,361.9 3468.2,358.6 4219.1,881.9 3747.0,1522.2 3738.9,3046.2 1421.9,3033.4 1393.1,5400.0 561.1,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0618/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63725375895318,39.31316679939848]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63425493514798,39.314933140542195]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63144204678146,39.31203390977924]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63444087058666,39.310267568635524]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0619/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p619","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0619/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0619/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,132.2 515.8,121.0 510.6,0.0 4352.0,0.0 4352.0,5042.8 820.5,5168.6 518.3,4774.7 427.9,199.2 -0.0,215.9 -0.0,132.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0619/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63428388443198,39.31715549254605]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6304458343887,39.31711847225438]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63050479131097,39.313408032268505]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63434284135425,39.313445052560176]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0620/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p620","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0620/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0620/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"902.0,4990.6 1185.1,44.3 4352.0,0.0 4352.0,4328.3 2714.5,4366.3 2513.5,4501.6 2427.9,4373.0 2146.5,4379.5 2319.3,4631.0 1732.5,5010.1 902.0,4990.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0620/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63151044991685,39.317112277621305]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62760752319257,39.31724862256325]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62739038605483,39.313475463911885]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6312933127791,39.31333911896994]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0621/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p621","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0621/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0621/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5131.6 642.9,5129.7 614.8,5085.1 1299.7,4619.8 -0.0,2655.2 1914.8,1370.0 1350.4,529.5 3914.3,597.7 3891.0,3531.0 3455.2,3692.9 3452.0,5374.3 -0.0,5400.0 -0.0,5131.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0621/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63481044235058,39.31390848481421]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63103828233517,39.31405741803036]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63080110846289,39.310410511964164]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6345732684783,39.31026157874802]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0622/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p622","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0622/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0622/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,3716.2 433.2,3554.1 447.1,618.9 2333.2,668.4 2941.6,277.6 4138.5,1999.1 4172.5,5099.7 2702.5,5113.0 2708.7,5400.0 -0.0,5400.0 -0.0,3716.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0622/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63180418543418,39.31404229033549]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62803375900039,39.314181626030006]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.627811868719,39.310536401169315]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63158229515278,39.3103970654748]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0623/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p623","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0623/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0623/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5400.0 -0.0,4997.0 1432.0,5013.6 1464.0,1972.0 166.5,0.0 450.3,0.0 533.4,132.6 739.3,0.0 4352.0,0.0 4352.0,5400.0 -0.0,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0623/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1464.0,3472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6280452,39.3117944]}},{"type":"Feature","properties":{"resourceCoords":[1464.0,1972.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6281366,39.3128253]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0626/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p626","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0626/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0626/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3562.8,4937.9 2856.3,4924.2 2709.3,4735.2 2706.0,5382.5 -0.0,5400.0 -0.0,532.4 1351.8,544.3 1356.6,0.0 2398.5,0.0 2395.1,607.4 3583.0,607.0 3562.8,4937.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0626/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62267941193353,39.314364795483755]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61882536722209,39.31452786731782]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61856567629043,39.31080181742233]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62241972100188,39.310638745588264]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0627__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p627 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"},{"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":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0627__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0627/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"147.0,4940.5 -0.0,4752.2 -0.0,5400.0 3058.7,5400.0 3013.5,4979.3 3903.2,4981.7 3893.7,538.4 847.6,537.1 849.2,4950.1 147.0,4940.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0627__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[836.0,1988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6194274,39.3131335]}},{"type":"Feature","properties":{"resourceCoords":[3896.0,1988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6166997,39.3132365]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0628/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p628","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"20"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0628/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0628/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5400.0 -0.0,4948.7 841.6,4951.0 832.1,523.5 3925.4,509.6 3933.1,4956.3 3227.6,4955.9 3227.8,5400.0 -0.0,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0628/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1732.0,1968.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6158967,39.3132668]}},{"type":"Feature","properties":{"resourceCoords":[3928.0,1968.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6139322,39.313341]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0629/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p629","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"21"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0629/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0629/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"706.2,4930.8 699.8,479.8 3899.9,473.0 3901.3,4920.7 4352.0,4914.9 4352.0,5400.0 -0.0,5400.0 -0.0,4930.2 706.2,4930.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0629/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2236.0,3396.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6124973,39.3123861]}},{"type":"Feature","properties":{"resourceCoords":[2236.0,1936.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6125614,39.3133956]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0630/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p630","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0630/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0630/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1847.9,5400.0 1847.8,4982.3 1398.4,4988.2 1396.0,553.0 3228.8,548.7 3265.8,0.0 4352.0,0.0 4352.0,5400.0 1847.9,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0630/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1396.0,3464.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.611011,39.3124452]}},{"type":"Feature","properties":{"resourceCoords":[1396.0,2008.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6110748,39.3134548]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0631/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p631","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0631/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0631/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5400.0 0.0,-0.0 4352.0,0.0 4352.0,2227.7 3852.7,2225.9 3860.9,3842.0 4352.0,3837.6 4352.0,5400.0 -0.0,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0631/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62541277758966,39.317527656014235]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62166765485512,39.31766048767586]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62145611149755,39.31403990879803]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6252012342321,39.313907077136406]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0632/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p632","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0632/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0632/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3561.3,5400.0 2373.5,5400.0 2384.0,3808.0 868.0,3808.0 875.5,2227.3 1360.4,2233.4 1381.7,54.6 3129.8,0.0 3577.2,50.6 3561.3,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0632/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2384.0,3808.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6205973,39.3151266]}},{"type":"Feature","properties":{"resourceCoords":[868.0,3808.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6219398,39.3150695]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0633/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p633","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"23"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0633/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0633/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"762.0,5294.9 725.4,86.9 3772.4,81.3 3791.2,5285.0 762.0,5294.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0633/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1496.0,2252.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6189452,39.3162682]}},{"type":"Feature","properties":{"resourceCoords":[744.0,3800.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6195568,39.3151709]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0634/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p634","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"24"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0634/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0634/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"727.7,5364.6 741.4,163.5 3817.5,174.3 3813.3,5358.6 727.7,5364.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0634/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2512.0,2328.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6153047,39.3164065]}},{"type":"Feature","properties":{"resourceCoords":[740.0,988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6169554,39.317273]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0635/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p635","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"21"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0635/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0635/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3847.8,5270.8 654.5,5276.7 652.1,5177.6 648.5,85.4 3850.3,86.4 3847.8,5270.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0635/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2188.0,2260.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6127583,39.3164931]}},{"type":"Feature","properties":{"resourceCoords":[652.0,916.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6141934,39.3173718]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0636/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p636","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0636/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0636/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3108.1,5260.6 1271.9,5264.9 1272.0,74.6 3399.8,74.3 3392.1,271.7 4352.0,265.9 4352.0,5400.0 4233.4,5400.0 4233.4,4711.0 3145.2,4710.9 3108.1,5260.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0636/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1272.0,3776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6112037,39.3154942]}},{"type":"Feature","properties":{"resourceCoords":[1272.0,900.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6113296,39.3174848]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0637/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p637","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0637/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0637/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,5202.8 -0.0,2897.3 -0.0,110.8 4352.0,76.8 4352.0,5202.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0637/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62579682556672,39.319281613660024]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62247879913855,39.32081892008983]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62003044200232,39.3176113565877]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62334846843049,39.316074050157894]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0639/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p639","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0639/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0639/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,4225.1 44.2,1484.9 694.7,1220.8 696.0,620.0 3764.0,620.0 3778.4,4701.5 275.5,4692.2 -0.0,4225.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0639/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[696.0,620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6199015,39.3205388]}},{"type":"Feature","properties":{"resourceCoords":[3764.0,620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6171832,39.3206425]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0640/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p640","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0640/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0640/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3776.0,4684.0 666.9,4681.5 649.7,605.7 3774.9,604.9 3776.0,4684.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0640/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[652.0,2480.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6171003,39.3193559]}},{"type":"Feature","properties":{"resourceCoords":[3776.0,4684.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6142333,39.3179472]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0641/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p641","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0641/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0641/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"819.3,5205.6 796.9,0.0 2336.4,0.0 2339.1,206.0 4352.0,201.9 4348.3,5191.3 819.3,5205.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0641/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6151666406327,39.32152002086368]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61130550956345,39.321654471070325]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61109137654019,39.317921951306495]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61495250760943,39.31778750109985]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0642/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p642","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0642/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0642/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1796.8,141.1 3650.0,299.2 3628.6,676.1 4352.0,705.0 4352.0,5400.0 3378.7,5400.0 3387.5,5202.7 1541.3,5191.9 1590.1,594.7 1773.5,602.0 1796.8,141.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0642/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61272396671562,39.32160124160257]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60885774517098,39.321765702934734]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6085958143557,39.31802826755926]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61246203590034,39.317863806227095]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0643/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p643","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0643/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0643/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5078.2 0.0,-0.0 4352.0,0.0 4352.0,5095.4 -0.0,5078.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0643/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62808362856909,39.32221366752153]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6247912250061,39.32378057886082]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62229560969682,39.32059792365603]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6255880132598,39.31903101231674]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0644/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p644","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0644/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0644/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4015.3,3488.5 3332.0,3492.1 3330.2,4197.1 3940.0,4458.2 3427.7,5400.0 1097.4,5400.0 1099.7,5063.3 1110.1,5062.5 1084.6,0.0 4322.2,0.0 3941.8,893.2 4015.3,3488.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0644/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62559248679786,39.32336849349456]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62229691009443,39.32491916150547]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61982712784238,39.32173348749253]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6231227045458,39.32018281948162]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0645/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p645","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0645/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0645/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"652.9,5133.8 -0.0,5400.0 -0.0,2168.8 635.2,2109.1 623.4,823.2 3739.6,804.8 3736.7,4522.1 651.6,4533.8 652.9,5133.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0645/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62065615602921,39.323631265463355]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61682093169853,39.32376621761302]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61660599270073,39.32005885466307]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62044121703141,39.3199239025134]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0646/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p646","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0646/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0646/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"696.9,4559.5 724.2,855.9 3814.3,850.2 3810.9,4567.5 696.9,4559.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0646/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[700.0,2704.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6172655,39.3219208]}},{"type":"Feature","properties":{"resourceCoords":[2508.0,848.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6157408,39.3232634]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0647/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p647","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0647/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0647/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"842.7,413.2 3911.4,410.3 3912.3,0.0 3993.3,0.0 3990.0,410.2 4352.0,409.9 4352.0,5071.0 2380.0,5061.1 2379.0,4853.5 838.0,4842.6 842.7,413.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0647/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1612.0,2272.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6138925,39.3233345]}},{"type":"Feature","properties":{"resourceCoords":[2388.0,412.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6132908,39.3246373]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0648/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p648","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0648/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0648/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3566.3,329.9 3573.0,0.0 4352.0,0.0 4352.0,5400.0 3442.9,5400.0 3449.3,5023.1 1606.8,4939.2 1601.8,5400.0 1419.8,5400.0 1408.7,5017.8 1366.4,5019.1 1194.4,412.8 3566.3,329.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0648/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1612.0,4100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6111273,39.322154]}},{"type":"Feature","properties":{"resourceCoords":[1908.0,384.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6109095,39.3247362]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0649/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p649","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0649/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0649/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,4727.8 3752.0,4980.0 3500.3,4403.9 1349.7,5400.0 -0.0,5400.0 -0.0,139.3 3433.6,448.7 3170.5,3432.3 4352.0,3534.0 4352.0,4727.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0649/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2168.0,4980.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6216847,39.3236645]}},{"type":"Feature","properties":{"resourceCoords":[3752.0,4980.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6214721,39.3224956]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0651/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p651","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"21"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0651/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0651/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"566.9,301.7 3687.5,325.1 3683.6,1708.1 3064.8,1768.8 3064.5,1962.8 3685.8,1959.0 3703.2,5202.6 2483.3,5205.2 2483.9,4351.1 2366.4,4351.1 2378.5,5205.4 -0.0,5295.9 -0.0,756.5 571.8,759.2 566.9,301.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0651/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1464.0,3608.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6167885,39.3268989]}},{"type":"Feature","properties":{"resourceCoords":[3084.0,3608.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6153548,39.3269514]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0652/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p652","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0652/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0652/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3789.2,4588.4 845.2,4605.7 834.2,853.5 2463.0,850.9 2450.8,0.0 2567.7,0.0 2567.4,850.7 3782.4,847.8 3789.2,4588.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0652/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1572.0,2736.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6166252,39.32451]}},{"type":"Feature","properties":{"resourceCoords":[2480.0,4592.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6157408,39.3232634]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0653/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p653","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0653/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0653/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"618.8,191.5 -0.0,193.3 -0.0,-0.0 3795.1,1.3 3761.8,4894.6 3680.9,4894.7 3680.6,5305.7 619.6,5311.1 618.8,191.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0653/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2160.0,3424.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6133766,39.325932]}},{"type":"Feature","properties":{"resourceCoords":[2160.0,1832.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6134483,39.3270262]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0654__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p654 [1]","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":"892.8"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0654__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0654/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"865.6,0.0 0.0,0.0 0.0,5400.0 892.8,5400.0 865.6,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0654__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":[-76.61283922591035,39.32830197581421]}},{"type":"Feature","properties":{"resourceCoords":[892.8,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61204616881068,39.32833301573634]}},{"type":"Feature","properties":{"resourceCoords":[892.8,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61180494906901,39.324593029160894]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61259800616868,39.32456198923877]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0654__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p654 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"11"},{"label":"split_canvas_x","value":"865.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3486.4"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0654__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0654/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3700.0,0.0 3696.0,0.0 3436.0,0.0 2940.0,0.0 866.0,0.0 865.6,0.0 891.8,5204.3 3567.6,5186.2 3583.8,4860.0 4352.0,4882.4 4352.0,0.0 3700.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0654__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1929.1,5192.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6109095,39.3247362]}},{"type":"Feature","properties":{"resourceCoords":[2812.7,1788.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.610243,39.3271485]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0655/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p655","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"11"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0655/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0655/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"661.2,674.0 3708.1,3312.2 3695.0,4333.1 618.1,4317.7 661.2,674.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0655/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[636.0,2936.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6149582,39.3292188]}},{"type":"Feature","properties":{"resourceCoords":[3100.0,2804.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6127845,39.3294071]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0656__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p656 [1]","metadata":[{"label":"streets","value":"10"},{"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":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0656__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0656/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"729.3,3485.1 775.2,4514.3 4352.0,4558.4 4352.0,0.0 3946.8,0.0 3917.0,971.5 4232.6,988.1 4220.3,1664.3 2080.4,1625.9 2058.7,1336.8 1842.8,1185.8 1604.5,1272.0 780.7,2278.3 1342.5,2741.3 729.3,3485.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0656__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2696.0,808.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6105657,39.3310363]}},{"type":"Feature","properties":{"resourceCoords":[3884.0,2064.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6094439,39.3301865]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0656__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p656 [2]","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":"1346.8"},{"label":"split_canvas_h","value":"1320.4"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0656__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0656/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1336.4,979.4 1346.8,0.0 605.4,-0.0 611.4,974.7 1336.4,979.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0656__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":[-76.61268463575668,39.330207046165164]}},{"type":"Feature","properties":{"resourceCoords":[1346.8,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61172613401574,39.329642268585545]}},{"type":"Feature","properties":{"resourceCoords":[1346.8,1320.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61244095105342,39.32891608983479]}},{"type":"Feature","properties":{"resourceCoords":[0.0,1320.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61339945279435,39.32948086741441]}},{"type":"Feature","properties":{"resourceCoords":[611.5,988.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6127845,39.3294071]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0657/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p657","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0657/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0657/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"673.2,4942.4 680.5,5400.0 -0.0,5400.0 0.0,0.0 2558.5,0.0 2440.6,1229.2 2554.0,1203.7 2554.1,1528.4 3806.9,2686.4 3816.4,4951.6 673.2,4942.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0657/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61849697538933,39.332497517427385]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61467232886385,39.33262405414877]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61447076751247,39.328927386846104]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61829541403796,39.328800850124715]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0658/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p658","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"17"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0658/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0658/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"842.7,5298.4 933.3,326.9 1320.9,0.0 3577.3,0.0 3239.6,693.1 3806.8,1295.7 3678.5,1897.4 3679.0,3017.2 3802.9,4134.9 4086.5,5294.3 3409.8,5400.0 3065.1,5268.5 842.7,5298.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0658/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2584.0,4172.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6126317,39.3308132]}},{"type":"Feature","properties":{"resourceCoords":[856.0,344.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.616225,39.3314768]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0659/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p659","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0659/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0659/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3938.6,4080.6 3101.6,4482.0 2509.0,4629.7 2214.1,5400.0 -0.0,5400.0 -0.0,2836.1 200.5,3005.7 1585.7,1643.8 1569.6,1543.0 2333.5,1401.9 2115.3,220.6 3180.2,9.7 3520.2,700.4 3891.5,2396.6 3938.6,4080.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0659/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6113040300049,39.33563120958755]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6095926872309,39.33295308817617]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61385885580415,39.33129907486177]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61557019857815,39.333977196273146]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0660/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p660","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0660/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0660/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,5400.0 2130.1,5400.0 2102.1,5102.3 1860.8,4956.2 2212.7,4359.3 1125.8,3852.6 22.4,3136.5 1538.3,2367.6 2925.8,1297.7 3148.9,1017.3 4352.0,1124.0 4352.0,3683.5 4036.6,3689.1 4024.0,4691.3 4352.0,4702.6 4352.0,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0660/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6130545873064,39.334093576702074]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60924922480672,39.33415411960447]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60915278353588,39.33047616730273]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61295814603555,39.33041562440033]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0661/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p661","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0661/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0661/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 409.6,0.0 516.8,351.4 1575.1,945.4 3683.4,525.3 3445.1,2390.9 2833.9,3355.6 3428.8,3850.4 3387.5,5088.1 4352.0,5098.8 4352.0,5400.0 -0.0,5400.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0661/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6324118,39.3257604]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6285915,39.3253033]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62932479999999,39.3216364]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6331451,39.3220935]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0662__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p662 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"3035.6"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0662__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0662/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3029.4,5072.4 2941.6,463.9 2878.0,497.9 2803.7,0.0 1224.8,0.0 1265.9,839.8 1050.8,2720.3 469.2,3703.6 1079.2,4180.1 1072.8,5400.0 2094.3,5400.0 3029.4,5072.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0662__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1759.8,3352.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6291946,39.3232583]}},{"type":"Feature","properties":{"resourceCoords":[2351.7,1936.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6284479,39.3241422]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0663/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p663","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0663/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0663/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 696.3,0.0 693.3,1046.6 3747.8,1065.3 3729.8,1764.1 4352.0,1761.4 4352.0,5400.0 -0.0,5400.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0663/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1528.0,2440.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6390883,39.3291274]}},{"type":"Feature","properties":{"resourceCoords":[796.0,2440.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.639703,39.3290076]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0664/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p664","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"9"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0664/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0664/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3700.9,839.8 3796.3,1591.9 3695.7,2266.5 3823.0,4226.9 3405.3,4171.7 3243.0,5400.0 -0.0,5400.0 -0.0,-0.0 1222.8,0.0 1937.1,1060.4 3700.9,839.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0664/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3776.0,3476.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6320784,39.3262197]}},{"type":"Feature","properties":{"resourceCoords":[3064.0,2432.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6326719,39.3269279]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0665/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p665","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0665/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0665/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"363.1,2293.1 507.6,1531.2 409.5,1382.3 421.6,892.5 -0.0,917.4 0.0,0.0 3746.5,29.7 3747.0,3543.8 3699.2,4561.6 3548.0,5400.0 1333.5,5400.0 366.9,4549.4 363.1,2293.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0665/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1336.0,3488.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6312277,39.3262481]}},{"type":"Feature","properties":{"resourceCoords":[2736.0,3488.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6300021,39.3262891]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0666/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p666","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0666/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0666/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"776.0,124.0 3759.6,132.7 3760.3,0.0 4352.0,0.0 4352.0,5400.0 2187.4,5400.0 2226.7,4945.4 696.7,4579.6 776.0,124.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0666/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2328.0,124.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6278671,39.3287151]}},{"type":"Feature","properties":{"resourceCoords":[776.0,124.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6292484,39.328661]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0667/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p667","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0667/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0667/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,4193.2 -0.0,1654.7 449.6,1587.3 421.1,731.8 4352.0,928.7 4352.0,4632.8 2749.4,4507.0 2696.6,5400.0 1437.6,5400.0 882.9,4303.6 -0.0,4193.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0667/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2892.0,4548.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6323981,39.3285532]}},{"type":"Feature","properties":{"resourceCoords":[436.0,836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6349357,39.3309461]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0668/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p668","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0668/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0668/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3648.9,4562.7 1600.1,4540.7 1424.6,835.5 3679.4,846.4 3648.9,4562.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0668/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1612.0,2724.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.631164,39.329858]}},{"type":"Feature","properties":{"resourceCoords":[3664.0,2724.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6293254,39.3299362]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0669/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p669","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0669/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0669/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1071.7,5039.4 245.2,791.4 1708.2,466.8 3614.2,439.7 3695.3,5001.7 1071.7,5039.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0669/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63607065261253,39.334440583684625]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6322437557232,39.33455580271172]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63206021744293,39.330857060592685]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63588711433226,39.33074184156559]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0670/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p670","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0670/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0670/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"434.9,5087.9 339.8,490.5 4070.3,427.3 4130.0,2558.6 4352.0,2552.1 4130.6,2622.5 4157.9,5035.8 434.9,5087.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0670/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63318944943904,39.33456026462192]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62939180489376,39.33466601957871]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6292233420708,39.33099555770434]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63302098661609,39.33088980274755]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0671/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p671","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"16"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0671/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0671/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3756.1,5400.0 3756.5,4936.9 770.1,4948.1 776.7,2570.8 994.3,2504.4 2323.0,2482.9 2301.8,342.3 3732.2,335.0 3756.2,2459.8 4352.0,2450.1 4352.0,5400.0 3756.1,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0671/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2324.0,2568.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6281241,39.3329329]}},{"type":"Feature","properties":{"resourceCoords":[748.0,408.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6296243,39.3343687]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0672/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p672","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0672/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0672/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3741.0,4488.8 796.2,4488.1 800.7,794.5 3752.5,778.8 3752.8,1236.5 4341.9,1235.6 4325.3,4356.3 3741.4,4357.8 3741.0,4488.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0672/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3756.0,2036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6266851,39.330471]}},{"type":"Feature","properties":{"resourceCoords":[2328.0,4484.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6278671,39.3287151]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0673/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p673","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0673/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0673/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,3670.4 -0.0,-0.0 835.9,0.0 836.9,450.5 2691.9,446.5 2751.5,4681.0 538.6,4678.8 533.2,3667.7 -0.0,3670.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0673/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64153589809348,39.332949453389304]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63778117527568,39.33366546292766]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6366406258002,39.33003641831692]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.640395348618,39.329320408778564]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0674/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p674","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0674/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0674/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,309.0 3891.6,273.5 3807.7,4754.4 3714.6,5400.0 759.9,5400.0 778.2,4723.0 20.1,4715.0 -0.0,309.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0674/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63922134770363,39.33340469704445]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63548661731217,39.33414582342587]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6343060501395,39.330536127893]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63804078053096,39.32979500151158]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0675/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p675","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0675/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0675/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1881.9,5239.7 1883.1,5400.0 -0.0,5400.0 -0.0,-0.0 244.8,0.0 382.4,541.3 839.0,436.8 845.9,1661.3 3116.2,1097.7 3121.7,4271.6 3738.8,4268.3 3717.7,5242.6 1881.9,5239.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0675/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64185225452742,39.336357252767975]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63815547997723,39.337068813995046]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63702195942946,39.33349595735846]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64071873397965,39.33278439613139]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0676__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p676 [1]","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"},{"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":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0676__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0676/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"581.7,5199.3 4009.1,5084.4 4074.6,1041.8 2679.5,1356.1 2417.9,0.0 0.0,-0.0 -0.0,4244.2 604.0,4240.0 581.7,5199.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0676__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[604.0,4240.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6377804,39.3341445]}},{"type":"Feature","properties":{"resourceCoords":[2640.0,5100.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6358281,39.333905]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0677/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p677","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0677/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0677/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3928.0,1024.0 3928.0,5112.0 323.7,5150.5 -0.0,3246.3 -0.0,927.7 1066.1,419.7 2594.7,960.9 3928.0,1024.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0677/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3928.0,1024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6316358,39.3370938]}},{"type":"Feature","properties":{"resourceCoords":[3928.0,5112.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6314535,39.3342936]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0678/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p678","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0678/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0678/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1455.7,5400.0 1457.3,4303.2 378.3,4289.6 409.2,2169.2 1514.7,2184.4 1307.7,531.1 2319.3,507.2 2240.1,411.2 1725.7,350.3 1663.4,199.1 2395.7,251.6 2964.3,548.7 3190.8,831.8 3640.3,1579.4 4352.0,1588.0 4352.0,5400.0 3022.2,5400.0 3026.6,4290.3 2274.6,4282.0 2268.6,5400.0 1455.7,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0678/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63256885769663,39.33992049056047]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62519715297282,39.34029552422393]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62459970978337,39.333171074684174]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63197141450718,39.332796041020714]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0679/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p679","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0679/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0679/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"891.5,2795.1 706.1,2748.6 807.4,1641.7 708.2,1335.4 975.4,-0.0 4352.0,-0.0 4352.0,1646.6 3977.2,1652.8 4029.1,5400.0 515.8,5400.0 651.3,4437.4 565.1,4421.1 584.1,4201.6 678.8,4224.1 1014.9,2830.0 891.5,2795.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0679/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63862397870622,39.34202408667731]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63693040019314,39.33935323329658]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64118537845292,39.337716538191856]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.642878956966,39.34038739157259]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0680/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p680","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"33"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0680/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0680/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3170.3,5400.0 -0.0,5400.0 -0.0,4011.3 851.8,4038.8 902.0,342.8 1857.0,348.2 1884.1,1264.5 1802.2,1332.8 1774.4,1378.6 2224.1,1390.1 2096.7,1258.3 2067.4,344.0 3854.0,308.4 3263.8,2659.2 4352.0,2932.3 4352.0,5229.8 3178.8,4940.1 3170.3,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0680/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1964.0,2564.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6396842,39.3377155]}},{"type":"Feature","properties":{"resourceCoords":[2432.0,336.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6377328,39.3381518]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0681/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p681","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0681/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0681/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2913.0,5245.7 2844.2,5400.0 2442.7,5400.0 2473.8,5274.0 1034.6,5261.4 1009.2,2092.1 92.0,2135.7 -0.0,2243.2 -0.0,1835.9 81.3,1923.2 1000.6,1881.8 987.8,1298.0 2618.2,1316.6 2630.6,231.6 3039.5,227.4 2783.3,4011.0 4090.5,5219.6 2913.0,5245.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0681/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63953124096899,39.33934478717845]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63608792260723,39.340707434007896]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63391711622968,39.337379695854814]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63736043459144,39.336017049025365]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0682__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p682 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"5"},{"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":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0682__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0682/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2519.4,5400.0 2809.8,3886.7 3206.3,0.0 0.0,-0.0 -0.0,4130.2 1576.8,5400.0 2519.4,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0682__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2032.0,1024.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6351174,39.3403034]}},{"type":"Feature","properties":{"resourceCoords":[1436.0,5288.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6341098,39.3373899]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0683/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p683","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0683/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0683/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"985.4,5400.0 572.4,5400.0 634.1,3110.9 825.8,3133.9 1438.4,826.7 1445.2,800.9 1657.9,0.0 2925.4,0.0 2363.5,1311.9 3998.4,1377.9 3224.6,5182.6 1018.7,4999.2 985.4,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0683/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2116.0,2964.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.637148,39.3419832]}},{"type":"Feature","properties":{"resourceCoords":[3260.0,2768.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6363381,39.3424617]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0684/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p684","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0684/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0684/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3005.0,1649.0 3543.8,1869.4 4352.0,1985.1 4352.0,5194.3 1356.6,4772.7 -0.0,4172.8 -0.0,3973.1 655.7,3834.8 670.5,2692.2 372.7,0.0 2404.3,0.0 2803.5,432.6 2675.4,1368.2 3005.0,1649.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0684/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6343920651195,39.34010705179923]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63062523063759,39.34067075337274]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6297272065494,39.33703036645863]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63349404103131,39.336466664885116]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0685/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p685","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0685/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0685/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2928.7,5300.1 2707.7,5311.9 2703.6,5400.0 -0.0,5400.0 -0.0,0.0 4352.0,0.0 4352.0,97.6 3426.6,7.8 2928.7,5300.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0685/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6455939570189,39.343196169528014]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64197824957809,39.34412563045066]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64049746765046,39.34063146826582]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64411317509128,39.33970200734317]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0686/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p686","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0686/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0686/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,0.0 4352.0,4669.9 2805.8,4750.2 2531.9,4918.7 1436.0,5080.0 1428.4,5400.0 -0.0,5400.0 -0.0,0.0 4352.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0686/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2568.0,1708.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6401987,39.3431742]}},{"type":"Feature","properties":{"resourceCoords":[1436.0,5080.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.640515,39.3407577]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0687/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p687","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0687/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0687/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2943.5,96.7 2213.1,5400.0 -0.0,5400.0 -0.0,0.0 4352.0,0.0 4352.0,308.6 2943.5,96.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0687/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.65660127979942,39.33324966583546]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6531130866118,39.33464353066697]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.65089275040486,39.33127211581688]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.65438094359249,39.32987825098537]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0688/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p688","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0688/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0688/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3843.2,2420.7 3819.4,4977.3 4352.0,4972.8 4352.0,5400.0 -0.0,5400.0 -0.0,-0.0 4352.0,0.0 4352.0,2412.6 3843.2,2420.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0688/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2604.0,3728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6509116,39.3322587]}},{"type":"Feature","properties":{"resourceCoords":[2604.0,4988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6505483,39.3314292]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0689/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p689","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0689/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0689/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3090.9,5400.0 1191.4,5388.3 1197.1,4953.3 654.8,4950.7 713.5,2347.7 1231.7,2346.4 1262.8,0.0 3203.0,0.0 3090.9,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0689/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[692.0,3656.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6498671,39.332549]}},{"type":"Feature","properties":{"resourceCoords":[3792.0,3656.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6472887,39.3332546]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0690/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p690","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"3"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0690/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0690/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,-0.0 4352.0,0.0 4352.0,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0690/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2272.0,1920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6463492,39.3347075]}},{"type":"Feature","properties":{"resourceCoords":[612.0,2316.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6476698,39.3340751]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0692__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p692 [2]","metadata":[{"label":"streets","value":"1"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"2378.0"},{"label":"split_canvas_y","value":"2072.0"},{"label":"split_canvas_w","value":"1974.0"},{"label":"split_canvas_h","value":"3328.0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0692__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0692/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,5400.0 4352.0,2462.3 3905.0,2898.2 3214.0,2189.9 2768.4,2236.0 2388.0,2281.2 2378.0,5400.0 4352.0,5400.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0692__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[2378.0,2072.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64481680071044,39.33213875115489]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,2072.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64404270316153,39.33336693244329]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6413659154031,39.33235702787597]}},{"type":"Feature","properties":{"resourceCoords":[2378.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64214001295201,39.331128846587575]}},{"type":"Feature","properties":{"resourceCoords":[2745.6,3034.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6438982,39.3320753]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0693/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p693","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0693/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0693/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1148.5,2994.0 758.3,1120.2 -0.0,1406.6 -0.0,-0.0 3154.0,0.0 3138.2,629.1 3808.2,608.7 3735.2,4087.1 3322.3,3922.7 2838.5,3545.9 1846.0,3657.2 1658.8,2825.5 1148.5,2994.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0693/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63782879317637,39.34499480914588]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63013132490047,39.34546880105356]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62937618301528,39.33803005005922]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63707365129117,39.337556058151534]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0694/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p694","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"23"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0694/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0694/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,655.0 -0.0,0.0 4352.0,0.0 4352.0,155.4 3260.7,190.4 3286.9,1036.0 3306.7,1122.5 3345.4,2927.8 3735.1,2933.0 3628.2,3512.4 4352.0,4386.0 4352.0,5400.0 3079.2,5400.0 2529.9,4512.2 2271.4,4303.6 1892.0,4144.2 1195.4,4102.5 1256.3,4246.4 1745.8,4298.7 1822.2,4389.6 540.2,4428.8 179.9,4350.0 -0.0,4246.2 -0.0,3765.0 435.1,4023.7 679.1,4096.4 664.9,617.4 -0.0,655.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0694/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1896.0,1380.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6287397,39.3436118]}},{"type":"Feature","properties":{"resourceCoords":[1276.0,1936.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6297896,39.3427949]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0695/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p695","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0695/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0695/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"400.0,2813.0 -0.0,2798.0 -0.0,0.0 4352.0,0.0 4352.0,90.4 3337.4,31.9 3306.6,552.3 3355.6,655.7 3294.8,771.7 3249.5,1558.2 4022.1,1599.2 4107.7,1795.1 4320.5,2018.1 3227.1,1947.0 3197.5,2460.8 3197.5,2460.8 3116.5,3867.1 2471.1,3828.7 2442.5,5400.0 2211.1,5400.0 1318.0,4733.5 271.7,3400.5 400.0,2813.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0695/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62641909254467,39.34535189889012]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61887947332511,39.3458519214105]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61808285624095,39.33856575463139]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6256224754605,39.33806573211101]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0696/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p696","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0696/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0696/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,3766.6 -0.0,1868.3 1074.3,1888.8 853.5,1682.5 758.6,1495.5 -0.0,1498.9 -0.0,726.6 53.0,609.6 -0.0,511.7 0.0,-0.0 2214.1,0.0 2191.7,1824.8 3367.0,1784.4 3352.1,468.3 2512.5,387.1 2431.2,271.1 3390.8,0.0 4352.0,0.0 4352.0,556.4 3780.4,504.4 3815.6,1530.9 4038.2,2373.3 3487.3,2888.0 2699.6,3427.1 3254.3,4554.1 2522.9,4897.7 2521.7,4895.5 2468.7,5144.1 2152.3,5028.0 1742.1,5140.9 1150.0,5222.8 1142.3,4871.9 1091.4,4706.7 -0.0,3766.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0696/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62063256318248,39.34569227056735]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61291801223774,39.3458570501549]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6126554912459,39.338401842019344]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62037004219064,39.338237062431794]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0697/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p697","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"9"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0697/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0697/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2814.6,4145.6 2456.2,3770.0 1794.0,4323.1 1098.0,4795.2 528.5,3665.8 1310.8,3112.4 1856.3,2586.5 1623.0,1739.9 1575.0,705.3 2148.2,750.6 2141.4,189.5 1179.3,201.6 220.8,487.0 303.7,603.0 1145.6,674.3 1181.0,1981.3 1142.6,2024.6 -0.0,2056.7 -0.0,-0.0 4352.0,0.0 4352.0,3866.2 3973.7,3834.6 3979.5,4654.5 3274.1,4444.2 2814.6,4145.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0697/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[528.0,3664.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6156805,39.3410631]}},{"type":"Feature","properties":{"resourceCoords":[3988.0,2296.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6095933,39.3430075]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0698/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p698","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"13"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0698/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0698/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,3738.1 -0.0,1610.5 908.4,1043.4 1972.4,61.6 2356.7,402.2 2643.0,572.1 3072.5,734.2 3546.7,807.6 3473.3,0.0 4352.0,0.0 4352.0,5400.0 3449.1,5400.0 3561.6,5228.2 3206.1,4825.1 2760.2,5217.1 2507.6,4923.1 2468.8,4955.3 1543.9,4703.7 1558.1,4580.0 1398.2,4674.3 864.5,3432.9 765.6,3430.3 475.8,2528.7 405.8,2537.0 703.2,3435.2 783.4,4187.3 696.8,4603.2 357.3,5400.0 -0.0,5400.0 -0.0,4258.6 82.4,4248.5 -0.0,3738.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0698/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3092.0,3336.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6106661,39.3363274]}},{"type":"Feature","properties":{"resourceCoords":[1432.0,2916.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6135836,39.3370659]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699B/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p699B","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699B/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699B/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1714.2,2282.1 1699.3,1262.5 2043.9,1659.4 3185.5,2428.4 3207.5,3228.4 3064.2,3229.6 3084.3,5400.0 1201.6,5400.0 1120.6,2290.3 1714.2,2282.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699B/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62715540511311,39.34128495300145]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6194831080608,39.34151931227391]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6191097580171,39.334104484121326]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62678205506941,39.333870124848865]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699C/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p699C","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699C/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699C/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1992.9,359.0 2556.1,349.3 2839.0,538.0 3071.0,1350.1 3249.7,3708.0 2324.7,4636.1 1426.2,5312.6 1406.6,5400.0 1348.4,5400.0 1541.1,4812.7 291.8,4531.3 96.2,5400.0 -0.0,5400.0 -0.0,3834.0 139.9,3864.7 1277.9,1461.1 1992.9,359.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699C/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62106939544448,39.33838102177351]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61368629175415,39.339935069875445]}},{"type":"Feature","properties":{"resourceCoords":[4352.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61121065880283,39.332799528697876]}},{"type":"Feature","properties":{"resourceCoords":[0.0,5400.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61859376249316,39.33124548059594]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1953 | sanborn03573_043 p699 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"4352.0"},{"label":"split_canvas_h","value":"5400.0"}],"created":"2026-09-21T15:09:42Z","modified":"2026-09-21T15:09:42Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699/info.json","type":"ImageService2","height":5400,"width":4352},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4352.0,2977.7 3430.0,3051.7 3442.2,2349.4 3309.4,1949.3 1203.6,0.0 0.0,0.0 -0.0,5400.0 2076.8,5400.0 2238.0,5400.0 2244.8,4677.2 2934.0,4790.4 2845.6,5400.0 3351.6,5400.0 4352.0,5400.0 4352.0,2977.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573195306:03573_06_1953-0699__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[848.0,2912.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6206464,39.3385034]}},{"type":"Feature","properties":{"resourceCoords":[3432.0,2912.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6183466,39.3386215]}}]}}]}