{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03573_018.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Baltimore, Maryland | 1928 | mapsnap generated fit (2026-09-20)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-20"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"90"},{"label":"placed","value":"83"},{"label":"unplaced","value":"7"},{"label":"fit sources","value":"georef 42, georef-snap 40, snap:0 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"6 sheet(s) cut into 13 panels"},{"label":"unplaced pages","value":"p717 (tier 1, 39.32210,-76.61167 +/-447m); p754__2 (tier 2, 39.32835,-76.59135 +/-101m); p754__3 (tier 1, 39.32162,-76.57359 +/-139m); p785 (tier 1, 39.32698,-76.59238 +/-245m); p798__1 (tier 2, 39.33038,-76.58591 +/-563m); p799C__1 (tier 2, 39.33547,-76.57045 +/-320m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0000/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p0","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0000/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0000/info.json","type":"ImageService2","height":8152,"width":5552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5552.0,8152.0 -0.0,8152.0 0.0,0.0 5552.0,0.0 5552.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0000/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61899144525509,39.30654462625612]}},{"type":"Feature","properties":{"resourceCoords":[5552.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61572818335804,39.306866616036544]}},{"type":"Feature","properties":{"resourceCoords":[5552.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61512148652581,39.30313281030796]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61838474842286,39.30281082052753]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0701/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p701","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0701/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0701/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 1144.0,0.0 1103.4,602.7 4829.6,590.7 4845.0,7379.9 4723.0,7366.5 4730.8,8152.0 -0.0,8152.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0701/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2824.0,5044.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.608367,39.3125607]}},{"type":"Feature","properties":{"resourceCoords":[4836.0,2824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6072547,39.3136068]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0702/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p702","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0702/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0702/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7359.1 122.7,7373.8 174.8,586.8 2069.7,622.4 5283.6,3529.2 5329.2,8150.5 -0.0,8144.4 -0.0,7359.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0702/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60744222280867,39.31487539198225]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60421614624178,39.31502219753688]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60394028945393,39.3113420657374]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60716636602082,39.31119526018277]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0703/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p703","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0703/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0703/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"417.7,3614.8 3495.0,152.9 4424.2,989.0 4408.2,4975.7 4594.6,4975.2 4595.0,8152.0 477.2,8152.0 417.7,3614.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0703/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3016.0,7320.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6026154,39.3117773]}},{"type":"Feature","properties":{"resourceCoords":[3496.0,152.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6025643,39.3150436]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0704/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p704","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0704/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0704/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,4962.7 -0.0,1009.1 580.4,376.6 5198.4,4392.6 5094.7,4574.4 4142.2,7250.3 5568.0,7249.0 5568.0,8152.0 76.2,8152.0 197.6,8114.5 186.1,4961.7 -0.0,4962.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0704/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60202400083647,39.31515019913409]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59874969105111,39.31528167827566]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59850263252034,39.31154654020485]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60177694230569,39.31141506106328]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0705/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p705","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0705/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0705/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"934.5,2282.6 2509.9,2273.6 2444.4,305.1 4996.5,328.7 4903.2,7865.7 5483.3,7869.0 5474.3,8152.0 2865.4,8152.0 2777.5,7854.4 436.9,7919.0 -0.0,8009.3 -0.0,1798.6 517.1,1806.3 1859.1,3337.7 1864.2,3337.7 934.5,2282.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0705/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4940.0,4768.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5985351,39.3159098]}},{"type":"Feature","properties":{"resourceCoords":[2508.0,1836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6007507,39.3158674]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0706/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p706","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0706/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0706/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"511.3,362.7 2075.0,359.2 1926.8,0.0 4423.6,0.0 4428.3,1243.3 4812.9,1239.2 4855.3,2295.6 5080.6,3052.9 4571.7,3065.9 4549.5,6367.6 5105.4,7792.6 536.0,7844.0 511.3,362.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0706/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4820.0,1696.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.598342,39.3183005]}},{"type":"Feature","properties":{"resourceCoords":[536.0,7844.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5971332,39.3150334]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0707/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p707","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0707/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0707/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,6180.4 211.8,5938.1 1.8,5745.2 2677.6,2709.4 3007.6,2863.6 4975.2,681.8 4977.1,3781.6 5568.0,4060.4 5568.0,8152.0 -0.0,8152.0 -0.0,6180.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0707/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59707946881937,39.31781310914233]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59387560798727,39.31793069862671]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59365464062473,39.31427606466271]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59685850145684,39.314158475178324]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0708/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p708","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0708/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0708/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"583.0,4054.7 -0.0,3777.7 -0.0,510.3 488.0,0.0 5568.0,0.0 5568.0,8152.0 3649.3,8152.0 3648.3,7325.3 581.1,7363.1 583.0,4054.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0708/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1736.0,5944.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5930403,39.3152828]}},{"type":"Feature","properties":{"resourceCoords":[3648.0,7156.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5918929,39.3147769]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0709__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 | 1928 | sanborn03573_018 p709 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5568.0"},{"label":"split_canvas_h","value":"8152.0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0709__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0709/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5568.0,-0.0 4711.6,0.0 4533.2,1046.4 4466.4,1364.4 2565.2,1351.6 2485.2,918.0 2458.0,771.2 2352.8,0.0 -0.0,-0.0 0.0,1280.0 -0.0,8152.0 1436.0,8152.0 1686.0,8152.0 2116.0,8152.0 4766.4,8152.0 4992.4,8152.0 5568.0,8152.0 5568.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0709__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2036.0,1580.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5823875,39.3142744]}},{"type":"Feature","properties":{"resourceCoords":[6460.0,1668.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5823376,39.3131686]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0709__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 | 1928 | sanborn03573_018 p709 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"2352.8"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2358.8"},{"label":"split_canvas_h","value":"1364.4"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0709__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0709/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4431.6,-0.0 2352.8,0.0 2458.0,771.2 2485.2,918.0 2565.2,1351.6 4353.5,1363.6 4246.4,1201.7 4431.6,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0709__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[2352.8,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58209408477835,39.31569907272685]}},{"type":"Feature","properties":{"resourceCoords":[4711.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58093153051492,39.31511939766845]}},{"type":"Feature","properties":{"resourceCoords":[4711.6,1364.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58136456291321,39.314599542708365]}},{"type":"Feature","properties":{"resourceCoords":[2352.8,1364.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58252711717664,39.31517921776677]}},{"type":"Feature","properties":{"resourceCoords":[3948.0,3265.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5823443,39.3140639]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0710/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p710","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0710/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0710/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"887.9,7832.0 872.0,8152.0 -0.0,8133.3 0.0,0.0 5568.0,-0.0 5568.0,8152.0 5156.0,8152.0 5155.5,7869.4 887.9,7832.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0710/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2488.0,7860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5905199,39.3135416]}},{"type":"Feature","properties":{"resourceCoords":[3232.0,2920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5875746,39.313329]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0711/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p711","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0711/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0711/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"747.9,5465.9 -0.0,5456.9 -0.0,2408.4 815.8,2416.8 839.1,510.2 1047.7,523.5 1064.6,200.9 5335.7,248.8 5335.3,533.6 5568.0,534.2 5568.0,8049.6 715.3,8152.0 747.9,5465.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0711/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59047600243886,39.31476574709752]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59028248115149,39.31222223301464]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59506192373331,39.31200147548207]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59525544502068,39.31454498956495]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0712/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p712","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0712/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0712/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5291.9,7848.8 2243.8,6751.7 184.4,5022.2 315.8,4738.2 -0.0,4457.7 -0.0,3221.3 566.1,3225.8 588.6,397.4 5534.6,272.3 5568.0,6392.7 5295.7,6391.7 5291.9,7848.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0712/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59502063380599,39.31449185006672]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59484420144621,39.31199601071039]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59953407096626,39.311794747683365]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59971050332604,39.3142905870397]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0713/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p713","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0713/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0713/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,6375.2 -0.0,3055.1 510.6,3044.7 279.3,2283.8 209.6,322.7 5568.0,292.7 5568.0,8152.0 3720.2,8027.3 3582.1,8152.0 672.8,8152.0 -0.0,6375.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0713/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59918685649872,39.31869955913644]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59713316743577,39.32065114067916]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59346573474694,39.31830858927614]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59551942380989,39.31635700773342]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0714/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p714","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0714/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0714/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,314.1 -0.0,-0.0 2784.8,0.0 2783.2,437.0 4318.2,448.0 4293.6,7771.6 3934.8,7774.0 3934.8,8110.0 569.7,8106.4 686.4,325.9 -0.0,314.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0714/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2772.0,3456.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5947935,39.3204172]}},{"type":"Feature","properties":{"resourceCoords":[4308.0,3456.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5942277,39.3209637]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0715/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p715","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"10"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0715/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0715/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"386.3,434.1 4144.1,427.4 5282.7,1723.1 4538.4,7602.7 4645.7,8013.9 -0.0,8152.0 -0.0,7813.5 361.4,7811.1 386.3,434.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0715/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1916.0,3464.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5936646,39.3215077]}},{"type":"Feature","properties":{"resourceCoords":[376.0,3464.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5942277,39.3209637]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0716/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p716","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0716/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0716/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1338.0,407.5 1289.3,18.8 1469.2,191.4 1586.8,0.0 2529.0,0.0 5275.2,2688.4 4658.4,3326.7 5568.0,4255.1 5568.0,7683.7 5055.7,8001.8 3856.4,7925.0 4083.7,8152.0 156.4,8152.0 -0.0,7760.7 -0.0,1897.8 573.1,2277.9 1338.0,407.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0716/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59400951480914,39.32381288429351]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59166154066105,39.32559792600223]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5883068437581,39.3229198784754]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5906548179062,39.32113483676668]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0718/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p718","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0718/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0718/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"240.7,8152.0 -0.0,5435.9 -0.0,3965.3 -0.0,1881.3 -0.0,1616.2 -0.0,1608.4 4163.3,1553.2 5568.0,1734.1 5568.0,8152.0 240.7,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0718/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1560.0,4960.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5883334,39.3238728]}},{"type":"Feature","properties":{"resourceCoords":[2728.0,1556.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5876318,39.3253959]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0719/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p719","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0719/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0719/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3840.0,7908.0 118.1,7898.4 46.9,-0.0 400.2,-0.0 1034.8,776.6 2011.6,-0.0 3797.7,-0.0 5568.0,994.8 3838.8,2648.3 3840.0,7908.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0719/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3840.0,3352.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5944958,39.3229029]}},{"type":"Feature","properties":{"resourceCoords":[3840.0,7908.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.596178,39.3212814]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0720/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p720","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0720/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0720/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1623.2,6134.5 1618.3,4790.6 1100.9,4790.9 1068.9,1944.9 1658.7,1935.6 1644.5,310.0 4371.0,307.7 4364.0,3114.7 4681.1,3113.3 4670.4,7114.1 -0.0,7056.8 -0.0,6140.5 1623.2,6134.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0720/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59825061047889,39.322755880213904]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5957229157535,39.32117554762506]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59869277504295,39.31829239831494]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60122046976834,39.31987273090378]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0721/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p721","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0721/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0721/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4716.0,3387.7 4751.4,8152.0 -0.0,8152.0 -0.0,0.0 4689.6,-0.0 4696.0,661.5 5568.0,640.4 5568.0,1025.1 4352.0,1040.1 4716.0,3387.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0721/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6008340788339,39.32026814222892]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59832656692916,39.318660624631214]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60134740574793,39.31580039385886]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60385491765267,39.31740791145656]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0722/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p722","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0722/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0722/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3722.1,8037.2 153.6,7968.1 199.1,3403.4 773.1,3408.8 819.7,757.9 3604.3,822.2 3611.1,158.9 5568.0,91.7 5568.0,1655.0 5092.2,2069.7 5063.8,3448.5 3807.3,3436.9 3722.1,8037.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0722/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6030740864418,39.317342491067485]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60051703352006,39.31577892340586]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60345515817308,39.312862060163816]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60601221109481,39.31442562782544]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0723/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p723","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0723/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0723/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4829.4,3837.1 4833.9,8152.0 930.5,8152.0 1337.7,764.5 4829.4,3837.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0723/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4832.0,6336.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6084367,39.3181654]}},{"type":"Feature","properties":{"resourceCoords":[4832.0,1420.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6056751,39.3182628]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0724/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p724","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0724/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0724/info.json","type":"ImageService2","height":8152,"width":5568},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7356.9 0.0,0.0 1151.9,0.0 1140.6,192.4 5232.3,239.8 2573.5,3261.7 4989.9,5610.8 4559.5,6204.5 4546.8,7781.3 4765.1,7980.8 633.9,7952.0 679.5,7363.8 -0.0,7356.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0724/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61014538045615,39.31818675453173]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6068427000874,39.318335824726255]}},{"type":"Feature","properties":{"resourceCoords":[5568.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60656257517303,39.31456847866775]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60986525554178,39.31441940847323]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0725/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p725","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0725/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0725/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5480.0,7465.1 960.4,7497.0 904.1,6698.9 -0.0,5695.3 -0.0,5394.1 1194.0,4320.7 1935.9,4236.4 2042.1,806.6 4990.9,751.3 4889.9,4202.1 5480.0,4190.2 5480.0,7465.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0725/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6096235794748,39.316259155931704]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60760679159756,39.31819246771177]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60391548656645,39.31585497960538]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60593227444369,39.31392166782532]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0726/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p726","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0726/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0726/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"803.4,4278.2 927.9,793.8 3275.5,767.3 3292.8,2132.4 4575.1,3585.5 4532.7,6173.0 4134.6,6170.8 4117.5,7539.8 4530.0,7532.0 4574.5,8152.0 1427.7,8152.0 1400.2,4265.8 803.4,4278.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0726/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4528.0,7532.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6030973,39.3171623]}},{"type":"Feature","properties":{"resourceCoords":[4528.0,4224.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6045885,39.3180943]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0727/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p727","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0727/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0727/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4036.6,7512.4 1148.3,7511.4 1241.6,3629.1 -0.0,2174.6 -0.0,815.6 5480.0,908.4 5480.0,8152.0 4287.2,8152.0 4036.6,7512.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0727/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60698813754927,39.31886489522132]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60500616334744,39.32084036870941]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60123421351865,39.3185433183299]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60321618772048,39.316567844841806]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0729/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p729","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0729/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0729/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,8152.0 -0.0,1074.4 4081.7,1002.9 4161.2,7613.4 1335.8,7638.4 1334.2,8152.0 -0.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0729/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.603487479177,39.322445481447055]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60148565430457,39.32440353425265]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5977467772346,39.322083595499315]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59974860210704,39.32012554269372]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0730/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p730","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0730/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0730/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1634.2,8152.0 -0.0,8152.0 -0.0,7560.1 -0.0,7556.5 -0.0,873.8 4937.1,792.6 4716.6,0.0 5480.0,0.0 5480.0,3000.9 3515.9,3451.1 4445.1,7610.5 1642.8,7575.1 1634.2,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0730/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[192.0,4216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5999377,39.3227604]}},{"type":"Feature","properties":{"resourceCoords":[4756.0,7612.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5967453,39.3234352]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0731/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p731","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0731/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0731/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5480.0,3185.0 5328.1,3149.2 4207.2,8152.0 -0.0,8152.0 -0.0,-0.0 5480.0,0.0 5480.0,3185.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0731/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59704607907936,39.32752804018567]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59413067329575,39.32645472741828]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59618023852998,39.323076174032586]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59909564431359,39.324149486799975]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0732/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p732","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0732/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0732/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1228.7,8152.0 0.0,7195.1 0.0,0.0 5150.6,0.0 5092.0,2952.0 5480.0,2957.8 5480.0,6812.6 4974.5,6658.8 4954.5,8152.0 1228.7,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0732/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2392.0,1620.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6086392,39.3208982]}},{"type":"Feature","properties":{"resourceCoords":[5092.0,2952.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6078465,39.3221118]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0733/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p733","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0733/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0733/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5240.5,2307.6 3713.7,7833.2 710.9,5563.0 643.6,3404.5 258.0,3410.7 224.2,455.7 0.0,462.6 0.0,0.0 5112.3,0.0 4978.0,515.5 5240.5,2307.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0733/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60984063209871,39.32205753684227]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60971087658034,39.32454593925435]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60495923658415,39.324395566156625]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60508899210252,39.32190716374455]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0734/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p734","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0734/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0734/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1310.5,4360.7 -0.0,5417.2 -0.0,1687.0 1668.0,1124.4 4884.6,1053.7 4897.8,1781.4 5480.0,1772.4 5480.0,6104.8 4962.9,6117.5 4968.0,6781.7 2671.2,3932.0 1504.2,4844.1 1310.5,4360.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0734/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60455633725194,39.32419712122763]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60206405253544,39.32260133386807]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6051111728795,39.31971298071009]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.607603457596,39.32130876806964]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0735/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p735","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0735/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0735/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2425.8,8152.0 -0.0,8152.0 -0.0,183.3 607.1,2090.0 1837.4,1648.2 1571.1,0.0 5386.4,0.0 4808.8,3600.7 4734.3,7434.9 4096.1,7445.0 2425.8,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0735/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60939077445153,39.32816822661669]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60633681695296,39.32744377172609]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60772022873223,39.3239046940627]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6107741862308,39.3246291489533]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0736/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p736","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0736/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0736/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5480.0,6967.6 1172.0,7611.3 590.7,3836.2 551.9,772.3 4816.0,796.0 4820.2,5006.8 4947.9,5152.3 5480.0,5110.4 5480.0,6967.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0736/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4816.0,3836.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6050996,39.3251054]}},{"type":"Feature","properties":{"resourceCoords":[4816.0,796.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.604296,39.3263422]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0737/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p737","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"13"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0737/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0737/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2774.3,7614.4 2183.4,7705.8 2179.2,5841.0 1643.7,5884.4 1514.8,5738.2 1456.6,0.0 4135.1,0.0 4142.4,1474.8 4904.1,1468.0 4927.3,7454.2 2775.3,7618.5 2774.3,7614.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0737/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1496.0,3036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.604704,39.3257229]}},{"type":"Feature","properties":{"resourceCoords":[4916.0,4552.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6033189,39.3244132]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0738/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p738","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0738/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0738/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3653.8,8070.4 756.7,7462.2 762.9,1492.2 -0.0,1499.6 -0.0,0.0 5168.9,0.0 3653.8,8070.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0738/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60251829228295,39.326421772230134]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59966379934473,39.32530368316214]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6017988351205,39.321995668372885]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60465332805873,39.32311375744088]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0739/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p739","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0739/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0739/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1469.1,6834.1 199.5,6941.3 182.1,6549.1 98.0,4798.5 -0.0,5381.9 -0.0,1431.4 5156.1,967.6 5270.6,3943.1 5480.0,3937.1 5480.0,4288.4 5298.2,4294.5 5445.0,5277.4 5225.3,6170.4 1632.3,5203.5 1469.1,6834.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0739/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1784.0,2728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6083744,39.3291019]}},{"type":"Feature","properties":{"resourceCoords":[5004.0,6680.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6065324,39.3272238]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0740/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p740","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"22"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0740/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0740/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"601.3,3745.8 787.1,3745.7 799.1,3387.0 585.1,3386.1 569.3,344.1 5213.5,349.9 5230.0,0.0 5480.0,0.0 5480.0,7160.5 4678.1,6756.7 4043.9,8115.2 218.6,6172.5 668.9,4891.5 698.8,3870.3 601.3,3745.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0740/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2304.0,5524.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6053118,39.3275164]}},{"type":"Feature","properties":{"resourceCoords":[2792.0,348.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.605022,39.3298579]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0741/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p741","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0741/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0741/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2907.9,1396.6 3062.8,466.7 5480.0,780.6 5480.0,4223.0 5285.3,5591.7 5480.0,5622.0 5480.0,7424.0 30.0,7628.2 81.8,1288.5 2907.9,1396.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0741/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60952869181783,39.33319799868005]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60632865762423,39.33323787478362]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6062525048126,39.32952979886865]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6094525390062,39.32948992276508]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0742/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p742","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0742/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0742/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"576.0,5556.0 96.1,761.1 4307.6,697.5 4644.5,3513.2 5480.0,3410.7 5480.0,6801.6 1023.3,7344.9 771.8,5559.1 576.0,5556.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0742/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[576.0,3688.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6062543,39.3315356]}},{"type":"Feature","properties":{"resourceCoords":[576.0,5556.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6063901,39.330693]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0743/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p743","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0743/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0743/info.json","type":"ImageService2","height":8152,"width":5480},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3075.3,7332.2 237.0,7272.4 244.9,8152.0 -0.0,8152.0 -0.0,1698.3 182.3,1695.9 177.7,1260.3 3568.6,1208.6 3562.0,846.9 5480.0,577.1 5480.0,6651.0 3214.8,6396.3 3075.3,7332.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0743/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60960195675553,39.33590834429788]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60641363603614,39.335905512085596]}},{"type":"Feature","properties":{"resourceCoords":[5480.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6064190450221,39.33221115241591]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60960736574148,39.33221398462819]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0744/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p744","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0744/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0744/info.json","type":"ImageService2","height":8152,"width":5448},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1218.9,818.6 1357.0,582.9 2353.6,1329.1 4126.8,1314.6 4124.9,1074.0 5448.0,1070.5 5448.0,5044.4 4728.7,5016.5 4629.7,7572.8 4637.3,7596.2 304.3,6959.7 533.7,905.6 1218.9,818.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0744/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4136.0,6052.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6041894,39.3333666]}},{"type":"Feature","properties":{"resourceCoords":[2836.0,2044.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6050384,39.3351648]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0745/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p745","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0745/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0745/info.json","type":"ImageService2","height":8152,"width":5448},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"790.8,7717.7 789.5,8152.0 -0.0,8152.0 -0.0,-0.0 822.1,0.0 823.0,457.3 4025.5,384.5 4197.4,5684.9 5448.0,6150.6 4221.8,6439.1 4171.7,7711.3 790.8,7717.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0745/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61001583286381,39.33884058352642]}},{"type":"Feature","properties":{"resourceCoords":[5448.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60683665336171,39.33887081427494]}},{"type":"Feature","properties":{"resourceCoords":[5448.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60677857682842,39.33516556518009]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60995775633052,39.33513533443157]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0746/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p746","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0746/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0746/info.json","type":"ImageService2","height":8152,"width":5448},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7887.5 -0.0,6986.9 1237.9,6735.7 -0.0,6233.5 -0.0,935.9 95.5,936.8 107.7,264.7 5326.8,261.1 5298.9,3770.9 5448.0,4140.5 5448.0,4758.4 4790.1,5125.3 4776.4,7908.1 5448.0,7911.8 5448.0,8152.0 3665.2,8152.0 2669.1,7398.8 2461.9,7655.5 -0.0,7887.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0746/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60768843225506,39.339113638997276]}},{"type":"Feature","properties":{"resourceCoords":[5448.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60450857129263,39.33922425238261]}},{"type":"Feature","properties":{"resourceCoords":[5448.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60429607010275,39.33551822526099]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60747593106518,39.33540761187566]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0747/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p747","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0747/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0747/info.json","type":"ImageService2","height":8152,"width":5444},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5444.0,0.0 5444.0,116.0 4461.0,413.9 5196.7,2353.4 4778.7,2514.7 4875.5,4893.7 5437.3,4870.8 5444.0,6335.9 3305.2,6393.0 3322.6,7059.9 45.9,7135.6 -0.0,-0.0 5444.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0747/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6096090340566,39.34190888534685]}},{"type":"Feature","properties":{"resourceCoords":[5444.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60640409437579,39.34193841156208]}},{"type":"Feature","properties":{"resourceCoords":[5444.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60634732715899,39.3382005591581]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6095522668398,39.33817103294287]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0748/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p748","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0748/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0748/info.json","type":"ImageService2","height":8152,"width":5424},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"564.0,6101.5 -0.0,6101.8 -0.0,3697.4 425.5,3551.4 -0.0,2267.1 -0.0,1503.8 896.3,1269.2 -0.0,1155.7 -0.0,-0.0 5424.0,0.0 5424.0,7597.1 544.0,7580.0 564.0,6101.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0748/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[544.0,7580.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6063406,39.3390341]}},{"type":"Feature","properties":{"resourceCoords":[3828.0,2420.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6045729,39.3414517]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0749/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p749","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0749/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0749/info.json","type":"ImageService2","height":8152,"width":5424},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5310.2 665.3,4931.4 662.3,4300.8 509.2,3924.3 520.0,340.0 2213.9,329.3 2210.8,0.0 5424.0,0.0 5424.0,8152.0 -0.0,8152.0 -0.0,5310.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0749/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[520.0,2352.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6045268,39.3382072]}},{"type":"Feature","properties":{"resourceCoords":[520.0,340.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6045725,39.3391031]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0752/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p752","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"12"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0752/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0752/info.json","type":"ImageService2","height":8152,"width":5464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 5464.0,-0.0 5464.0,7302.7 5464.0,7302.7 5464.0,8152.0 -0.0,8152.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0752/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4788.0,1856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6002009,39.3316847]}},{"type":"Feature","properties":{"resourceCoords":[4788.0,268.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5992759,39.3316833]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0753__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 | 1928 | sanborn03573_018 p753 [1]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"6398.4"},{"label":"split_canvas_w","value":"5464.0"},{"label":"split_canvas_h","value":"1753.6"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0753__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0753/info.json","type":"ImageService2","height":8152,"width":5464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"669.6,7665.6 1117.5,7564.9 3292.1,8152.0 3800.0,8152.0 5464.0,8152.0 5464.0,7653.9 5402.3,7627.8 947.3,6407.0 341.6,6398.4 0.0,6399.2 0.0,6786.4 -0.0,8015.9 158.4,8152.0 766.9,8152.0 669.6,7665.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0753__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,6398.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59572470862848,39.328274508702314]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,6398.4],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58954641049364,39.329579264710034]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58900443888733,39.32804305935797]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59518273702217,39.32673830335025]}},{"type":"Feature","properties":{"resourceCoords":[588.0,7688.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5946629,39.3272843]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0753__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 | 1928 | sanborn03573_018 p753 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"9"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5464.0"},{"label":"split_canvas_h","value":"6475.2"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0753__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0753/info.json","type":"ImageService2","height":8152,"width":5464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"490.2,6400.5 3756.0,6446.8 5076.0,6465.6 5280.7,6470.7 5275.9,5429.5 5464.0,5429.9 5464.0,0.0 -0.0,0.0 -0.0,5773.9 490.2,6400.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0753__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5248.0,3743.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5921193,39.3293254]}},{"type":"Feature","properties":{"resourceCoords":[184.0,3743.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5953551,39.3293259]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0754__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 | 1928 | sanborn03573_018 p754 [1]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"5"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5464.0"},{"label":"split_canvas_h","value":"6406.0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0754__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0754/info.json","type":"ImageService2","height":8152,"width":5464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4870.4,5438.5 5113.8,6328.6 4837.5,6404.1 5464.0,6406.0 5464.0,6352.0 5464.0,6325.2 5464.0,6318.8 5464.0,0.0 412.9,0.0 372.1,5415.3 4870.4,5438.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0754__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[196.0,3714.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5921193,39.3293254]}},{"type":"Feature","properties":{"resourceCoords":[196.0,5750.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5921199,39.3283277]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0755/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p755","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0755/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0755/info.json","type":"ImageService2","height":8152,"width":5464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5654.5 1256.4,3174.6 -0.0,2567.2 -0.0,2381.8 945.4,2134.5 502.6,1235.0 1393.5,795.7 4842.3,826.2 5168.4,7279.6 3276.8,7262.8 2582.9,7928.1 2631.5,8152.0 2267.3,8152.0 2244.8,8044.6 1274.6,7257.3 -0.0,7240.2 -0.0,5654.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0755/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59487246924954,39.32787790622537]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59171706887389,39.327899643365065]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59167543830708,39.3242323005738]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59483083868273,39.3242105634341]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0756/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p756","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"25"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0756/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0756/info.json","type":"ImageService2","height":8152,"width":5464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3970.0,0.0 5464.0,0.0 5464.0,1254.7 4834.1,1266.1 4789.0,4417.5 4971.0,5529.4 5080.0,5526.0 5090.1,6472.2 5464.0,6513.7 5464.0,8152.0 2637.1,8152.0 2612.3,7249.2 603.6,7288.6 79.0,866.9 1134.2,843.6 3970.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0756/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4776.0,3364.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5893657,39.3263513]}},{"type":"Feature","properties":{"resourceCoords":[2568.0,5640.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5906833,39.3253472]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0757/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p757","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"11"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0757/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0757/info.json","type":"ImageService2","height":8152,"width":5464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4551.0,3553.4 4596.9,7753.4 3496.1,7910.5 387.8,7802.3 389.4,7180.5 -0.0,7172.6 -0.0,1473.9 326.8,1029.1 327.4,924.5 747.3,-0.0 5464.0,-0.0 5464.0,2181.7 4742.2,2174.6 5110.1,2406.3 4551.0,3553.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0757/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2456.0,4964.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5876292,39.3263487]}},{"type":"Feature","properties":{"resourceCoords":[4540.0,4964.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5876318,39.3253959]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0759/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p759","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0759/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0759/info.json","type":"ImageService2","height":8152,"width":5464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4507.9,6366.1 4372.8,6202.2 4345.0,6413.4 3928.6,7765.0 389.4,6726.0 -0.0,8048.9 0.0,0.0 5464.0,-0.0 5464.0,6660.0 4507.9,6366.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0759/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.59656363435528,39.34491318093814]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5944800561961,39.340296686122656]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60332342831981,39.337875594589576]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60540700647898,39.34249208940506]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0772/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p772","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0772/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0772/info.json","type":"ImageService2","height":8152,"width":5464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 5464.0,0.0 5464.0,8152.0 -0.0,8152.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0772/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5898996809068,39.33638195742291]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58833996937013,39.33647778911116]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58815640761402,39.334665288421995]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5897161191507,39.334569456733746]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0773/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p773","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0773/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0773/info.json","type":"ImageService2","height":8152,"width":5464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1384.1,501.8 1555.9,317.3 2196.6,486.1 2212.5,109.5 5464.0,0.0 5343.7,94.7 5309.8,8152.0 -0.0,8152.0 -0.0,6662.3 -0.0,6662.3 -0.0,3563.3 1297.6,3551.4 1384.1,501.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0773/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58532154702336,39.328942388870566]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5833384657836,39.33083326223646]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57971695891582,39.328528529353626]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58170004015558,39.32663765598773]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0774/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p774","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0774/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0774/info.json","type":"ImageService2","height":8152,"width":5464},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,8152.0 -0.0,-0.0 5464.0,0.0 5464.0,8152.0 -0.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0774/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5833400587245,39.330764882722676]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58133789800263,39.33265752226851]}},{"type":"Feature","properties":{"resourceCoords":[5464.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57771291479517,39.33033067536775]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57971507551704,39.32843803582191]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0775/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p775","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"7"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0775/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0775/info.json","type":"ImageService2","height":8152,"width":5468},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 186.8,0.0 173.0,1466.4 5407.2,1479.4 5405.5,1608.0 5214.2,7305.8 246.4,7304.7 214.9,8152.0 -0.0,8152.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0775/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[244.0,7388.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.578981,39.3249815]}},{"type":"Feature","properties":{"resourceCoords":[5148.0,7388.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.577181,39.3267065]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0776/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p776","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0776/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0776/info.json","type":"ImageService2","height":8152,"width":5468},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"287.2,7284.8 394.0,7242.9 -0.0,7242.1 64.6,1576.8 5434.3,1531.4 5468.0,7277.9 287.2,7284.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0776/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58044785945268,39.32887809368149]}},{"type":"Feature","properties":{"resourceCoords":[5468.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57838824335735,39.3307918163032]}},{"type":"Feature","properties":{"resourceCoords":[5468.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57472566219445,39.32839988148635]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57678527828978,39.32648615886464]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0777/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p777","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0777/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0777/info.json","type":"ImageService2","height":8152,"width":5468},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"147.4,84.1 5468.0,0.0 5011.1,180.3 5468.0,171.3 5468.0,7959.8 191.4,7758.8 178.2,5465.5 -0.0,5462.3 -0.0,928.4 136.6,926.1 147.4,84.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0777/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57911144490417,39.32497920095494]}},{"type":"Feature","properties":{"resourceCoords":[5468.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57704529630344,39.32689079648631]}},{"type":"Feature","properties":{"resourceCoords":[5468.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57338699096078,39.32449114075918]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57545313956152,39.32257954522781]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0778/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p778","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0778/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0778/info.json","type":"ImageService2","height":8152,"width":5468},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"308.0,7994.2 335.4,130.8 -0.0,136.3 -0.0,-0.0 5468.0,0.0 5468.0,7560.2 5304.2,7549.5 5305.7,7939.7 1540.2,8051.1 308.0,7994.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0778/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57715173014054,39.326761897117706]}},{"type":"Feature","properties":{"resourceCoords":[5468.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57511369105954,39.32866076246967]}},{"type":"Feature","properties":{"resourceCoords":[5468.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57147965351908,39.326293815114234]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57351769260008,39.32439494976227]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0779/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p779","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0779/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0779/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,4452.4 0.0,-0.0 5275.4,-0.0 5322.2,7249.7 731.8,7690.7 682.3,8152.0 386.8,4425.5 -0.0,4452.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0779/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57001196734365,39.32787930404861]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56764954000299,39.326123314778265]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.570940290874,39.323436592132694]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57330271821466,39.32519258140304]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0780/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p780","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0780/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0780/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3677.2,7638.4 181.0,7712.0 4.8,-0.0 5548.0,-0.0 5548.0,7015.0 3688.7,6962.3 3677.2,7638.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0780/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1936.0,7656.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5699256,39.3232762]}},{"type":"Feature","properties":{"resourceCoords":[3020.0,3492.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.567757,39.324286]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0781/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p781","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0781/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0781/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5245.8,201.3 5220.3,7264.7 5035.3,7339.6 1108.9,7842.4 654.2,836.4 5245.8,201.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0781/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57272082546113,39.32559105777511]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57046595517879,39.323769295346246]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57387985555998,39.321204811411505]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57613472584232,39.323026573840366]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0782/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p782","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0782/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0782/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4694.6,8152.0 4590.9,7676.3 76.9,7944.1 116.3,837.3 3658.5,677.5 3653.8,-0.0 5584.0,-0.0 5584.0,6225.7 4693.1,7416.4 5020.1,7429.2 4942.0,7690.0 5584.0,7748.4 5584.0,8152.0 4694.6,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0782/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1892.0,2120.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5705006,39.3228438]}},{"type":"Feature","properties":{"resourceCoords":[8356.0,2120.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5678824,39.320766]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0783__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 | 1928 | sanborn03573_018 p783 [1]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"3303.6"},{"label":"split_canvas_w","value":"3351.6"},{"label":"split_canvas_h","value":"4848.4"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0783__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0783/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,3612.0 -0.0,8152.0 2526.4,8152.0 2540.9,6888.7 3336.4,6664.3 3350.5,3537.0 -0.0,3612.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0783__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2239.7,5450.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5762969,39.3221025]}},{"type":"Feature","properties":{"resourceCoords":[2239.7,3575.4],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5755573,39.3227622]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0783__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 | 1928 | sanborn03573_018 p783 [2]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"7"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5584.0"},{"label":"split_canvas_h","value":"8152.0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0783__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0783/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"800.5,975.9 827.1,3303.6 3351.6,3303.6 3329.6,8152.0 4204.9,8152.0 4227.1,3551.2 4594.8,3566.1 5584.0,3157.8 5584.0,867.2 3814.6,785.7 800.5,975.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0783__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1712.0,992.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5746478,39.3221601]}},{"type":"Feature","properties":{"resourceCoords":[3748.0,6504.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5758879,39.3197015]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0784/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p784","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0784/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0784/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,8152.0 -0.0,3493.9 361.5,3504.2 1332.0,3091.5 1321.1,841.5 4022.9,787.5 4093.0,1259.7 4964.7,1312.4 4991.4,916.9 4366.0,821.7 4459.9,570.8 4140.3,538.8 4549.2,-0.0 5584.0,-0.0 5584.0,8152.0 -0.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0784/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57316347759736,39.32174031386124]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57072294491586,39.32002416472114]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57393874996237,39.317248369235394]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57637928264387,39.318964518375495]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0786/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p786","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0786/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0786/info.json","type":"ImageService2","height":8152,"width":5600},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,8152.0 -0.0,-0.0 5600.0,0.0 5600.0,8152.0 -0.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0786/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56872338971525,39.32091069428192]}},{"type":"Feature","properties":{"resourceCoords":[5600.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56545007948293,39.32133470485698]}},{"type":"Feature","properties":{"resourceCoords":[5600.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56465782079295,39.317622352992394]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56793113102526,39.317198342417335]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0787/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p787","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0787/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0787/info.json","type":"ImageService2","height":8152,"width":5600},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5600.0,8152.0 -0.0,8152.0 -0.0,5932.1 4392.9,1025.9 5198.4,1016.8 5269.4,4778.3 4812.4,4782.9 4826.5,7098.1 5600.0,7091.0 5600.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0787/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58154409725803,39.31748326252293]}},{"type":"Feature","properties":{"resourceCoords":[5600.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57826679061554,39.31748559243918]}},{"type":"Feature","properties":{"resourceCoords":[5600.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5782624374178,39.31376851778883]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5815397440603,39.313766187872574]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0788/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p788","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0788/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0788/info.json","type":"ImageService2","height":8152,"width":5600},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1050.6 -0.0,-0.0 5600.0,0.0 5600.0,1019.8 5014.1,1023.1 5011.1,4832.0 5600.0,4829.6 5600.0,8152.0 770.4,8152.0 776.2,7189.8 -0.0,7192.3 -0.0,4852.4 458.5,4850.4 410.1,1048.4 -0.0,1050.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0788/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[440.0,3564.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5784737,39.315887]}},{"type":"Feature","properties":{"resourceCoords":[2652.0,1036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5771937,39.3170344]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0789/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p789","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0789/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0789/info.json","type":"ImageService2","height":8152,"width":5600},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"948.2,4817.0 357.2,4818.3 368.0,996.0 955.9,993.9 958.0,0.0 2976.7,0.0 3601.5,578.4 4129.2,0.0 5600.0,0.0 5600.0,8152.0 941.4,8151.0 948.2,4817.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0789/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[368.0,3532.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5758028,39.3159075]}},{"type":"Feature","properties":{"resourceCoords":[368.0,996.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.575816,39.3170476]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0798__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 | 1928 | sanborn03573_018 p798 [2]","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"},{"label":"split_canvas_x","value":"3195.2"},{"label":"split_canvas_y","value":"1941.2"},{"label":"split_canvas_w","value":"2416.8"},{"label":"split_canvas_h","value":"2183.6"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0798__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0798/info.json","type":"ImageService2","height":8152,"width":5612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3398.7,3673.8 3249.0,3807.6 4619.5,3991.6 4606.1,3676.1 5237.6,3639.1 5216.7,2152.2 5296.6,2058.2 5612.0,2124.9 5612.0,1943.6 3229.2,1941.2 3207.4,3131.2 3398.7,3673.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0798__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3418.9,3848.9],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5845216,39.3270225]}},{"type":"Feature","properties":{"resourceCoords":[5248.5,2073.2],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5846402,39.3293489]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p799","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799/info.json","type":"ImageService2","height":8152,"width":5580},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5580.0,8152.0 -0.0,8152.0 -0.0,-0.0 5580.0,0.0 5580.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58716616655377,39.34784888674522]}},{"type":"Feature","properties":{"resourceCoords":[5580.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58408658058481,39.347774198748816]}},{"type":"Feature","properties":{"resourceCoords":[5580.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58422668709322,39.34427035464186]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58730627306218,39.34434504263825]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799A/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p799A","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799A/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799A/info.json","type":"ImageService2","height":8152,"width":5600},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,8152.0 -0.0,0.0 3229.1,-0.0 3191.6,646.7 3791.9,677.8 3794.3,3443.1 4491.7,3452.9 5600.0,2899.5 5600.0,8152.0 -0.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799A/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57431939355698,39.34740083770457]}},{"type":"Feature","properties":{"resourceCoords":[5600.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57202810333574,39.342657918051536]}},{"type":"Feature","properties":{"resourceCoords":[5600.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58089330319454,39.340060214271425]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58318459341578,39.34480313392446]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799B/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p799B","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799B/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799B/info.json","type":"ImageService2","height":8152,"width":5612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5608.4,7519.1 5612.0,8152.0 -0.0,8152.0 -0.0,6603.7 2352.0,3280.0 1121.4,3090.6 554.9,2677.7 2158.6,407.4 1710.8,-0.0 5612.0,-0.0 5612.0,2314.6 5106.1,2310.9 5098.0,3447.7 5440.9,3449.3 5385.5,4928.4 5469.0,5257.1 5440.2,6449.9 5608.4,7519.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799B/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57530727744188,39.345366484510635]}},{"type":"Feature","properties":{"resourceCoords":[5612.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56993517472047,39.342534069647385]}},{"type":"Feature","properties":{"resourceCoords":[5612.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57521783051688,39.3364563330237]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.58058993323829,39.33928874788695]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799D/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p799D","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799D/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799D/info.json","type":"ImageService2","height":8152,"width":5612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2870.5,6473.9 1665.1,6407.3 768.4,5890.5 553.5,5069.7 686.3,2273.2 -0.0,2274.9 -0.0,0.0 5612.0,-0.0 5612.0,7609.4 2870.5,6473.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799D/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.57191695416762,39.3410664737333]}},{"type":"Feature","properties":{"resourceCoords":[5612.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.56924568778122,39.33963618175452]}},{"type":"Feature","properties":{"resourceCoords":[5612.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5719132058403,39.3366139514824]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.5745844722267,39.33804424346118]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799E/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p799E","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799E/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799E/info.json","type":"ImageService2","height":8152,"width":5612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"41.0,2860.6 185.3,586.1 1015.0,1124.1 2158.3,1248.3 5612.0,2861.5 5612.0,8152.0 -0.0,8152.0 -0.0,6114.1 240.6,6125.1 287.5,4929.0 41.0,2860.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799E/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3540.0,1908.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.572164,39.3373303]}},{"type":"Feature","properties":{"resourceCoords":[252.0,4712.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5747614,39.3370185]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799F/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p799F","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"10"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799F/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799F/info.json","type":"ImageService2","height":8152,"width":5612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2659.3,0.0 3747.0,0.0 5342.8,2015.4 5612.0,2011.7 5612.0,8152.0 4954.2,8152.0 4802.9,6718.7 -0.0,7225.8 -0.0,-0.0 1362.6,0.0 1843.7,671.1 2659.3,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799F/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2084.0,3872.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5693222,39.3319339]}},{"type":"Feature","properties":{"resourceCoords":[24.0,6544.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5692213,39.3304369]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799G/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_018 p799G","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"}],"created":"2026-09-20T23:04:20Z","modified":"2026-09-20T23:04:20Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799G/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799G/info.json","type":"ImageService2","height":8152,"width":5612},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5612.0,0.0 5612.0,8152.0 -0.0,8152.0 0.0,-0.0 5612.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192807:03573_07_1928-0799G/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2068.0,7472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5653141,39.3282612]}},{"type":"Feature","properties":{"resourceCoords":[2068.0,3824.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.5668698,39.3293982]}}]}}]}