{"id":"https://data.mapsnap.org/runs/v1.3/iiif/loc/sanborn03573_017.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Baltimore, Maryland | 1928 | mapsnap generated fit (2026-09-21)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-09-21"},{"label":"run","value":"corpus-v1"},{"label":"pages","value":"110"},{"label":"placed","value":"98"},{"label":"unplaced","value":"12"},{"label":"fit sources","value":"georef 59, georef-snap 37, snap:0 2"},{"label":"key map","value":"georeferenced"},{"label":"split sheets","value":"7 sheet(s) cut into 14 panels"},{"label":"unplaced pages","value":"p0__1 (tier 1, 39.33709,-76.63686 +/-267m); p0__2 (tier 1, 39.33713,-76.63993 +/-100m); p612 (tier 1, 39.31146,-76.64162 +/-253m); p625 (tier 1, 39.33384,-76.63660 +/-240m); p650 (tier 1, 39.32833,-76.62125 +/-745m); p684 (tier 2, 39.33822,-76.63222 +/-119m); p687 (tier 1, 39.33227,-76.65365 +/-251m); p691 (tier 1, 39.33172,-76.64678 +/-250m); p699 (tier 2, 39.33949,-76.61950 +/-100m); p699A (tier 3, 39.34320,-76.64658 +/-467m); p699B (tier 2, 39.33742,-76.62503 +/-221m); p699C (tier 2, 39.33479,-76.61535 +/-444m)"}],"items":[{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0601/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_017 p601","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"17"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0601/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0601/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,8152.0 -0.0,-0.0 2712.0,0.0 2709.0,623.1 5063.1,640.4 5058.8,7590.2 5508.0,7588.1 5508.0,8152.0 -0.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0601/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2696.0,4124.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6513921,39.3112893]}},{"type":"Feature","properties":{"resourceCoords":[328.0,4124.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6527898,39.3112364]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0602/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_017 p602","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0602/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0602/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1703.5,7622.9 1254.4,7626.2 1242.0,676.2 4192.3,685.3 4217.5,7681.8 5508.0,7654.5 5508.0,8152.0 1704.8,8152.0 1703.5,7622.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0602/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1244.0,4160.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6499987,39.311342]}},{"type":"Feature","properties":{"resourceCoords":[4208.0,3004.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6482802,39.3119329]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0603/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_017 p603","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0603/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0603/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,8152.0 -0.0,6818.6 2528.8,6823.7 2609.1,6334.2 1264.0,6360.0 1264.0,1772.0 4019.7,1760.9 4134.5,6301.3 5508.0,6282.6 5508.0,8152.0 -0.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0603/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1264.0,6360.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6481462,39.3097966]}},{"type":"Feature","properties":{"resourceCoords":[1264.0,1772.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6482802,39.3119329]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0604/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_017 p604","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0604/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0604/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,1021.4 21.2,0.0 521.4,0.0 4415.5,4816.6 5508.0,3814.5 5508.0,8152.0 1397.9,8152.0 1408.2,7546.7 -0.0,7540.9 -0.0,1021.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0604/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64671123724224,39.31333576094434]}},{"type":"Feature","properties":{"resourceCoords":[5508.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64347994242613,39.313501568098424]}},{"type":"Feature","properties":{"resourceCoords":[5508.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64316499354324,39.30977524717082]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64639628835936,39.309609440016736]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0605/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_017 p605","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0605/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0605/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2490.3,0.0 4133.9,1919.2 3080.5,2817.8 4407.4,4384.3 5508.0,3525.3 5508.0,8152.0 5473.2,7917.4 133.0,7903.7 121.0,7279.4 -0.0,7279.9 -0.0,-0.0 2490.3,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0605/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.65177078142537,39.31648903151862]}},{"type":"Feature","properties":{"resourceCoords":[5508.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64854781934172,39.31660166521706]}},{"type":"Feature","properties":{"resourceCoords":[5508.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64833386324301,39.312885120610765]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.65155682532667,39.31277248691233]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0606/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_017 p606","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"13"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0606/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0606/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4139.5,4479.1 4113.9,7446.0 1264.0,7444.0 1325.2,645.7 3748.8,3699.7 3917.7,3601.6 4643.9,4472.6 4139.5,4479.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0606/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1264.0,5092.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6483531,39.3129916]}},{"type":"Feature","properties":{"resourceCoords":[1264.0,7444.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6482802,39.3119329]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0607/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_017 p607","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0607/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0607/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5238.6,7394.8 5218.1,8152.0 -0.0,8152.0 -0.0,0.0 5508.0,-0.0 5508.0,7394.6 5238.6,7394.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0607/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64956689341003,39.32083333169703]}},{"type":"Feature","properties":{"resourceCoords":[5508.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64736032323965,39.31900745026287]}},{"type":"Feature","properties":{"resourceCoords":[5508.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.65082887418725,39.316463065908756]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.65303544435763,39.318288947342914]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0608/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_017 p608","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0608/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0608/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7872.6 -0.0,7544.4 159.8,7605.8 175.3,6787.7 444.0,6785.4 391.6,-0.0 5508.0,-0.0 5508.0,956.9 4943.9,1056.7 4945.0,6760.4 5508.0,6757.5 5508.0,8152.0 3455.4,8152.0 3450.5,6767.7 923.4,6782.4 -0.0,7872.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0608/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64776824113748,39.31895370193366]}},{"type":"Feature","properties":{"resourceCoords":[5508.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64557443293934,39.317110016445994]}},{"type":"Feature","properties":{"resourceCoords":[5508.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64907675492857,39.31458031132295]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.65127056312672,39.31642399681061]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0609/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_017 p609","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"15"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0609/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0609/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1571.3,6723.4 1516.5,6722.7 957.1,6715.7 892.6,1053.5 1451.8,952.1 1441.1,2.2 4247.5,-0.0 4259.8,1314.3 4782.7,1344.3 4738.8,3419.5 4279.7,3419.5 4309.5,6590.9 5508.0,6582.9 5408.8,6771.4 1571.3,6723.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0609/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3640.0,4736.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6467664,39.3149046]}},{"type":"Feature","properties":{"resourceCoords":[924.0,3420.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6472753,39.3162295]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0610/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_017 p610","metadata":[{"label":"streets","value":"12"},{"label":"intersections","value":"16"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0610/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0610/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,4075.8 462.0,4080.0 525.8,1992.3 -0.0,1957.4 -0.0,0.0 4007.5,-0.0 3925.1,7270.7 -0.0,7267.0 -0.0,4075.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0610/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[464.0,4080.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6457521,39.3149395]}},{"type":"Feature","properties":{"resourceCoords":[4796.0,5012.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6444168,39.3132061]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0611/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_017 p611","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"10"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0611/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0611/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4498.4,7284.0 -0.0,7291.3 -0.0,-0.0 1352.6,-0.0 1484.0,83.5 1489.5,565.6 5508.0,915.2 5508.0,6708.0 4390.2,5817.3 4498.4,7284.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0611/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[836.0,5048.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6444168,39.3132061]}},{"type":"Feature","properties":{"resourceCoords":[4500.0,7284.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6439348,39.311267]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0613/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p613","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0613/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0613/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"371.6,4227.4 352.6,188.2 832.8,138.7 818.6,0.0 4897.6,0.0 5508.0,197.9 5508.0,1786.2 5046.5,1767.2 5080.0,7808.0 -0.0,7848.7 -0.0,4261.5 371.6,4227.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0613/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3904.0,3352.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6393658,39.3141944]}},{"type":"Feature","properties":{"resourceCoords":[5080.0,7808.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6372131,39.3128856]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0614/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p614","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0614/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0614/info.json","type":"ImageService2","height":8152,"width":5508},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"192.2,1763.0 654.2,1785.5 655.1,316.7 54.1,0.0 5508.0,0.0 5508.0,993.2 4649.6,2089.4 5508.0,2324.9 5508.0,3806.3 3679.5,6282.0 3680.0,7803.7 222.0,7799.1 192.2,1763.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0614/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64011388457824,39.31568517630718]}},{"type":"Feature","properties":{"resourceCoords":[5508.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63752003185635,39.31722382504013]}},{"type":"Feature","properties":{"resourceCoords":[5508.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63459724285482,39.31423274653893]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63719109557671,39.312694097805974]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0615/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p615","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0615/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0615/info.json","type":"ImageService2","height":8152,"width":5536},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5536.0,8152.0 -0.0,8152.0 -0.0,3531.1 536.9,3525.9 535.6,3265.4 534.8,3097.0 518.3,2309.6 513.4,1397.2 5282.0,1418.8 5536.0,898.1 5536.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0615/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63814284468391,39.31261928025962]}},{"type":"Feature","properties":{"resourceCoords":[5536.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63621023981462,39.310598112539815]}},{"type":"Feature","properties":{"resourceCoords":[5536.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6400299520472,39.30838067724187]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6419625569165,39.310401844961675]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0616/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p616","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0616/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0616/info.json","type":"ImageService2","height":8152,"width":5536},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"587.3,622.4 4791.3,581.2 4809.4,8108.2 4566.8,8152.0 4416.5,8152.0 4268.0,8152.0 -0.0,8152.0 -0.0,5645.8 587.3,622.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0616/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63911070227059,39.31211943084966]}},{"type":"Feature","properties":{"resourceCoords":[5536.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6365162672017,39.31362438481402]}},{"type":"Feature","properties":{"resourceCoords":[5536.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63367208831264,39.31064761473365]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63626652338152,39.30914266076929]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0617/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p617","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0617/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0617/info.json","type":"ImageService2","height":8152,"width":5536},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"826.1,1670.6 -0.0,1982.6 0.0,-0.0 5536.0,0.0 5315.8,385.3 5511.4,387.5 5424.2,6000.3 4133.6,6005.1 2556.0,7133.2 1667.8,5912.5 1690.4,2859.3 826.1,1670.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0617/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63720111086985,39.317138746947144]}},{"type":"Feature","properties":{"resourceCoords":[5536.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63389909771489,39.31719531430915]}},{"type":"Feature","properties":{"resourceCoords":[5536.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63379218637466,39.31340690294705]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63709419952963,39.31335033558504]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0618/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p618","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0618/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0618/info.json","type":"ImageService2","height":8152,"width":5536},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"132.8,640.7 4496.7,600.4 5506.1,1326.5 4817.3,2284.7 4825.2,4539.6 2308.8,4565.6 161.4,7932.9 132.8,640.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0618/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2488.0,4564.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6341855,39.3124107]}},{"type":"Feature","properties":{"resourceCoords":[4820.0,3036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6336167,39.3135971]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0619/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p619","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0619/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0619/info.json","type":"ImageService2","height":8152,"width":5536},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"118.9,7114.0 -0.0,-0.0 5536.0,0.0 5536.0,5840.4 5250.0,5888.8 5339.6,7615.4 563.2,7711.7 118.9,7114.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0619/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6339610142245,39.31712862605164]}},{"type":"Feature","properties":{"resourceCoords":[5536.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63070647110779,39.317136017216214]}},{"type":"Feature","properties":{"resourceCoords":[5536.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63069250193429,39.313402068320535]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.633947045051,39.31339467715596]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0620/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p620","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0620/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0620/info.json","type":"ImageService2","height":8152,"width":5536},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5857.5 283.9,5824.5 582.2,77.3 1439.3,0.0 2918.0,2878.5 5536.0,6762.9 2948.2,6865.2 2744.4,6552.4 2315.7,6553.7 2654.0,7057.0 1765.4,7618.6 -0.0,7561.1 -0.0,5857.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0620/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6310558335252,39.317157076573935]}},{"type":"Feature","properties":{"resourceCoords":[5536.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62775788110746,39.31729794205155]}},{"type":"Feature","properties":{"resourceCoords":[5536.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62749164808946,39.31351418519155]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6307896005072,39.31337331971393]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0621/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p621","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"12"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0621/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0621/info.json","type":"ImageService2","height":8152,"width":5516},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,8152.0 -0.0,7681.8 129.4,7607.1 -0.0,7410.9 -0.0,3466.4 2102.8,2060.1 1270.4,796.9 5083.9,918.2 5015.2,7677.2 5516.0,7676.6 5516.0,8152.0 -0.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0621/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5024.0,5312.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6312828,39.311657]}},{"type":"Feature","properties":{"resourceCoords":[5024.0,3012.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6313579,39.3126936]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0622/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p622","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0622/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0622/info.json","type":"ImageService2","height":8152,"width":5560},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7402.3 80.8,946.6 2757.2,1045.7 3627.0,496.0 3298.7,0.0 3717.3,0.0 3915.1,308.3 5560.0,234.9 5560.0,8152.0 -0.0,8152.0 -0.0,7855.8 477.1,7856.9 478.1,7402.8 -0.0,7402.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0622/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2208.0,2960.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6300221,39.3127475]}},{"type":"Feature","properties":{"resourceCoords":[5308.0,6420.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6280079,39.3112005]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0623/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p623","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"4"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0623/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0623/info.json","type":"ImageService2","height":8152,"width":5560},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5560.0,8152.0 1620.4,8152.0 1643.4,73.8 5560.0,0.0 5560.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0623/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1364.0,2912.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6281366,39.3128253]}},{"type":"Feature","properties":{"resourceCoords":[1364.0,6480.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6280079,39.3112005]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0624/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_017 p624","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"8"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0624/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0624/info.json","type":"ImageService2","height":8152,"width":5560},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,4064.5 -0.0,-0.0 4593.6,0.0 4626.3,1454.7 4748.0,2408.5 4521.9,2416.8 4574.4,4659.0 3910.5,4316.9 2725.6,6611.7 2718.1,8152.0 1039.8,8152.0 1606.1,7023.2 288.2,6362.1 -0.0,4064.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0624/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3916.0,6768.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6235299,39.3155499]}},{"type":"Feature","properties":{"resourceCoords":[3652.0,7296.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6234857,39.3150038]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0626/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p626","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0626/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0626/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,8152.0 -0.0,881.0 996.9,876.5 992.9,0.0 4601.7,0.0 4639.1,7452.6 5584.0,7474.1 5584.0,8152.0 -0.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0626/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62220862093677,39.3144037223407]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61893052995791,39.31451956830191]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6187134739944,39.31079078023172]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62199156497327,39.31067493427051]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0627/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_017 p627","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"18"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0627/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0627/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1430.0,8133.1 1433.6,7455.2 495.7,7429.4 503.1,774.5 5095.6,782.9 5100.0,7483.8 5584.0,7485.6 5584.0,8152.0 -0.0,8152.0 -0.0,8126.6 1430.0,8133.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0627/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1632.0,2964.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6187477,39.3131592]}},{"type":"Feature","properties":{"resourceCoords":[5096.0,5192.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6166335,39.31222]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0628/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p628","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"19"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0628/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0628/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"908.9,7457.2 424.5,7453.8 442.1,747.0 5126.5,748.1 5106.2,7483.9 5584.0,7485.2 5584.0,8152.0 906.7,8124.2 908.9,7457.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0628/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3140.0,2948.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6151018,39.3132968]}},{"type":"Feature","properties":{"resourceCoords":[428.0,5160.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6166335,39.31222]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0629/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p629","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0629/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0629/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"778.0,8136.7 779.7,7469.7 298.2,7466.8 335.1,728.9 5584.0,757.8 5584.0,7486.5 5584.0,8152.0 -0.0,8152.0 -0.0,8134.2 778.0,8136.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0629/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61421869387597,39.31467446615131]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61094646378177,39.31481829764867]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61067697061492,39.311096201384515]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61394920070911,39.310952369887154]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0630/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p630","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0630/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0630/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4189.2,761.5 4240.7,0.0 5584.0,0.0 5584.0,8152.0 1831.5,8149.1 1779.2,767.1 4189.2,761.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0630/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1412.0,5180.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.611011,39.3124452]}},{"type":"Feature","properties":{"resourceCoords":[1412.0,768.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6111386,39.3144637]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0631/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p631","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0631/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0631/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5106.3,5770.4 5584.0,5768.1 5584.0,8152.0 1388.2,8152.0 -0.0,5399.4 0.0,0.0 5584.0,0.0 5584.0,3332.9 5104.7,3328.5 5106.3,5770.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0631/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62501144920236,39.317516351230815]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62183185706915,39.317640066252935]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6216000460673,39.31402349246961]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62477963820051,39.31389977744749]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0632/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p632","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0632/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0632/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4662.5,7191.6 1087.7,7161.4 1093.3,5738.7 634.1,5739.1 641.8,3392.4 1102.3,3398.4 1114.8,195.4 -0.0,191.1 0.0,0.0 3441.1,0.0 4675.8,157.8 4662.5,7191.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0632/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6224984586015,39.31770255295162]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61919060713346,39.31784128607925]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61893065552549,39.31407883213875]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62223850699353,39.31394009901112]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0633/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p633","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0633/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0633/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"452.7,7928.8 484.7,136.3 5075.2,182.1 5016.5,7967.7 452.7,7928.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0633/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62001644202905,39.317796317576324]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6166956816555,39.317942846520694]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6164211221921,39.314165715375026]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61974188256565,39.314019186430656]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0634/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p634","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"24"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0634/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0634/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"405.3,8026.6 397.7,132.5 5065.0,132.1 5087.0,8000.5 405.3,8026.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0634/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3096.0,3408.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6153047,39.3164065]}},{"type":"Feature","properties":{"resourceCoords":[400.0,1384.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6169554,39.317273]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0635/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p635","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0635/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0635/info.json","type":"ImageService2","height":8152,"width":5532},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5089.4,8001.6 232.4,7961.0 230.1,7811.3 297.8,119.8 5167.7,171.0 5089.4,8001.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0635/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61441270587586,39.31799402517532]}},{"type":"Feature","properties":{"resourceCoords":[5532.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61115728264079,39.3181443852018]}},{"type":"Feature","properties":{"resourceCoords":[5532.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61087289550156,39.31440677592512]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61412831873663,39.31425641589864]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0636/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p636","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0636/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0636/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4003.2,7414.8 3968.5,7942.4 1205.9,7955.7 1181.1,201.2 5544.2,192.4 5584.0,0.0 5584.0,8152.0 5356.6,8152.0 5353.5,7186.9 4017.3,7190.3 4003.2,7414.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0636/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61207362034898,39.31812413775097]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60875285505662,39.3182432798622]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60852961094727,39.314466158080634]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61185037623963,39.3143470159694]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0637/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p637","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"17"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0637/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0637/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,143.9 5548.5,160.9 5554.0,7476.0 -0.0,4674.1 -0.0,143.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0637/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3152.0,2368.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6232342,39.3192122]}},{"type":"Feature","properties":{"resourceCoords":[3152.0,4912.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.622445,39.3182156]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0638/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_017 p638","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"6"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0638/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0638/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"341.7,7562.6 106.4,0.0 5431.7,0.0 1315.4,8120.7 341.7,7562.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0638/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2672.0,2352.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6207375,39.3203917]}},{"type":"Feature","properties":{"resourceCoords":[244.0,4936.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6212349,39.318786]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0639/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p639","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"13"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0639/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0639/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5116.5,7082.9 457.0,7068.4 461.9,908.4 5099.5,911.9 5116.5,7082.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0639/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3948.0,912.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6178581,39.3206163]}},{"type":"Feature","properties":{"resourceCoords":[1628.0,7072.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6190383,39.3177708]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0640/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p640","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0640/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0640/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5066.0,7060.2 371.8,7052.8 350.8,897.3 5069.3,899.8 5066.0,7060.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0640/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[352.0,3728.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6171003,39.3193559]}},{"type":"Feature","properties":{"resourceCoords":[4100.0,7060.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.614801,39.3179256]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0641/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p641","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"11"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0641/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0641/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"666.2,7772.8 691.4,0.0 2968.4,0.0 2970.2,339.8 5584.0,352.4 5584.0,7786.6 666.2,7772.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0641/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1828.0,1736.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6137246,39.3207749]}},{"type":"Feature","properties":{"resourceCoords":[1828.0,7776.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6135366,39.3179737]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0642/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p642","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0642/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0642/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5584.0,7795.8 1328.9,7796.3 1296.5,301.2 1969.9,193.3 4760.1,412.7 4790.5,0.0 5584.0,0.0 5584.0,7795.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0642/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61228976343135,39.321616995240724]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60899198864998,39.32174018212687]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60876115399654,39.31798939871931]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61205892877791,39.31786621183317]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0643/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p643","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"2"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0643/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0643/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5870.0 -0.0,878.6 639.0,611.9 1166.2,0.0 5584.0,0.0 5584.0,7629.9 203.5,7608.8 -0.0,5870.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0643/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5320.0,2904.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6241611,39.3224992]}},{"type":"Feature","properties":{"resourceCoords":[5320.0,5280.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6234276,39.321571]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0644/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p644","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0644/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0644/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1630.7,0.0 1704.3,509.7 5312.4,484.7 5333.9,2094.4 5584.0,2101.1 5584.0,5171.0 654.5,5062.5 584.6,0.0 1630.7,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0644/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62447367879885,39.32262287310389]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62169345196743,39.32391536225583]}},{"type":"Feature","properties":{"resourceCoords":[5584.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61927140116322,39.32075336556399]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62205162799464,39.319460876412045]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0645/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p645","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"14"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0645/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0645/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"459.2,3676.7 182.8,3816.7 -0.0,3469.4 -0.0,503.5 454.0,276.4 454.0,0.0 5365.0,0.0 5365.3,1232.6 5133.9,1235.0 5098.3,6856.3 465.5,6851.2 459.2,3676.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0645/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3948.0,6856.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6178581,39.3206163]}},{"type":"Feature","properties":{"resourceCoords":[5100.0,4040.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6172655,39.3219208]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0646/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p646","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0646/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0646/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"343.6,6859.9 363.1,1276.7 5020.2,1249.9 5036.8,6853.6 343.6,6859.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0646/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3064.0,6860.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6155758,39.3207016]}},{"type":"Feature","properties":{"resourceCoords":[5036.0,4060.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6144893,39.3220242]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0647/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p647","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"13"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0647/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0647/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"798.1,7282.3 686.2,684.4 5584.0,593.3 5584.0,7552.4 3106.7,7584.7 3098.7,7241.3 798.1,7282.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0647/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3080.0,6216.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6131267,39.3220781]}},{"type":"Feature","properties":{"resourceCoords":[5268.0,600.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.611941,39.3246917]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0648/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p648","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0648/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0648/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"839.2,7598.8 873.9,598.8 4822.4,553.6 4813.1,780.5 5584.0,764.3 5584.0,8152.0 5300.7,8152.0 5293.0,7254.0 4498.7,7261.4 4471.8,7677.8 1677.1,7482.4 839.2,7598.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0648/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1716.0,6208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6111273,39.322154]}},{"type":"Feature","properties":{"resourceCoords":[556.0,604.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.611941,39.3246917]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0649/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p649","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"6"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0649/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0649/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,0.0 5584.0,0.0 5584.0,7858.5 5437.0,8152.0 3418.9,8152.0 3367.7,6644.4 -0.0,6758.6 -0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0649/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3200.0,4364.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6224744,39.3245796]}},{"type":"Feature","properties":{"resourceCoords":[856.0,232.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6250071,39.3257562]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0651/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p651","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"21"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0651/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0651/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"147.1,6533.7 0.0,0.0 351.3,0.0 357.2,383.9 3062.4,390.7 3059.8,0.0 5080.3,0.0 5086.4,2490.4 5584.0,2486.8 5584.0,2652.6 4613.3,2662.2 4615.4,2875.5 5091.5,2870.2 5142.1,7782.1 3295.2,7795.1 3289.7,6515.3 3112.0,6516.4 3136.4,7796.1 660.4,7811.6 648.3,6530.8 147.1,6533.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0651/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1740.0,5384.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6167885,39.3268989]}},{"type":"Feature","properties":{"resourceCoords":[5080.0,396.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6149582,39.3292188]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0652/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p652","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0652/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0652/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"585.3,6933.8 582.4,5705.5 -0.0,5706.7 0.0,0.0 570.9,0.0 575.5,1271.4 3033.2,1270.3 3016.3,0.0 3192.8,0.0 3190.7,1270.2 5024.0,1268.0 5027.4,6913.0 585.3,6933.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0652/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3052.0,6916.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6157408,39.3232634]}},{"type":"Feature","properties":{"resourceCoords":[5024.0,1268.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.61474,39.3258796]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0653/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p653","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"17"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0653/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0653/info.json","type":"ImageService2","height":8152,"width":5584},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"463.3,7965.2 474.4,212.0 -0.0,212.5 -0.0,-0.0 5116.9,0.0 5098.1,7964.3 463.3,7965.2\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0653/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2804.0,2700.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6134483,39.3270262]}},{"type":"Feature","properties":{"resourceCoords":[5116.0,5108.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6120181,39.3259883]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0654/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_017 p654","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0654/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0654/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4647.7,7925.0 345.3,7885.2 419.8,0.0 5116.7,0.0 5105.0,225.9 5548.0,242.3 5548.0,8152.0 4633.6,8152.0 4647.7,7925.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0654/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6124184204189,39.32827393288059]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60917448463424,39.32842494295435]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60888964988676,39.32471180883008]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61213358567143,39.32456079875632]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0655/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p655","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0655/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0655/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"843.6,6572.6 340.8,6562.4 392.9,4460.9 396.5,4316.2 401.9,4063.5 -0.0,4052.4 -0.0,480.4 277.6,870.2 5091.4,5092.1 5069.4,5825.4 5049.2,6813.7 839.1,6739.0 843.6,6572.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0655/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61536476629288,39.33121339945268]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61216052300956,39.33138741979166]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6118322725946,39.327719873144254]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61503651587792,39.32754585280527]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0656/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_017 p656","metadata":[{"label":"streets","value":"11"},{"label":"intersections","value":"26"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0656/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0656/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,5069.9 -0.0,4040.0 1682.1,1944.3 2192.3,1811.5 2551.7,926.6 3352.0,1207.4 3308.8,0.0 5544.1,0.0 5548.0,7228.3 5132.5,7227.4 5136.5,7001.3 477.1,7163.8 442.7,5416.5 -0.0,5069.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0656/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3760.0,5160.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6102661,39.3292375]}},{"type":"Feature","properties":{"resourceCoords":[3352.0,1208.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6105657,39.3310363]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0657/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p657","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"14"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0657/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0657/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"408.0,7496.0 51.8,7115.2 0.0,-0.0 5548.0,0.0 5548.0,2931.4 4708.1,7103.0 3291.2,8152.0 408.0,7496.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0657/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4188.0,7496.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6154982,39.3292021]}},{"type":"Feature","properties":{"resourceCoords":[408.0,7496.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6177209,39.3291337]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0658/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p658","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0658/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0658/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"533.0,7926.4 -0.0,694.6 696.3,0.0 5548.0,0.0 5428.4,7878.2 4494.3,8152.0 1271.2,7968.5 1051.3,8152.0 555.2,8152.0 550.8,7927.4 533.0,7926.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0658/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61658209441373,39.33144365711398]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61458243567479,39.33340943745012]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61087433208174,39.3311207080385]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61287399082067,39.329154927702355]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0659/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p659","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0659/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0659/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1724.4,6962.1 1357.8,7135.3 1838.4,8152.0 -0.0,8152.0 -0.0,7822.4 359.2,8023.5 1316.9,6313.6 -0.0,4746.7 -0.0,4298.1 1864.9,2469.9 1840.4,2319.4 2981.0,2105.7 2650.5,341.9 4240.4,22.7 4751.0,1053.2 5183.0,2758.3 5389.1,6100.8 4140.4,6703.8 3255.6,6926.6 2719.8,8152.0 2390.3,8152.0 1724.4,6962.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0659/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61115948228468,39.335424920814766]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60970667111164,39.333136451908096]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61402360435926,39.331473673826096]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6154764155323,39.333762142732766]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0660/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p660","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0660/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0660/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3302.2,5577.6 3358.7,6781.7 1709.5,6160.5 -0.0,5205.0 -0.0,4380.0 2225.4,3074.9 3836.8,1644.7 4301.5,1035.2 3507.3,0.0 5548.0,0.0 5548.0,5553.9 3302.2,5577.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0660/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61259596839668,39.334116148134584]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60933792767247,39.33415302718312]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60926836073895,39.33042405800811]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61252640146316,39.330387178959576]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0661/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p661","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"8"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0661/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0661/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4114.6,5254.3 4173.1,5539.4 5548.0,6377.8 5548.0,8152.0 -0.0,8152.0 -0.0,282.1 1521.2,1184.2 1541.6,1353.5 3714.5,1023.7 4079.9,352.1 4367.0,171.4 4700.4,148.4 5206.9,426.2 4114.6,5254.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0661/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1684.0,1816.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.631099,39.324741]}},{"type":"Feature","properties":{"resourceCoords":[2992.0,1604.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6303994,39.3247884]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0662/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_017 p662","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"5"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0662/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0662/info.json","type":"ImageService2","height":8152,"width":5552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,8152.0 -0.0,7584.7 1723.7,7615.2 1752.8,5974.2 585.7,5284.3 428.8,4973.7 1427.2,1219.0 1571.5,0.0 5552.0,0.0 5552.0,5913.7 5390.8,6025.4 5239.8,7038.6 4917.6,7456.5 5399.3,8152.0 -0.0,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0662/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1116.0,5624.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6295903,39.3229269]}},{"type":"Feature","properties":{"resourceCoords":[3984.0,7060.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6279935,39.3222185]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0663/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p663","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"15"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0663/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0663/info.json","type":"ImageService2","height":8152,"width":5552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"533.8,4808.4 692.7,4433.4 470.2,1583.9 5071.5,1584.1 5050.7,2639.6 5552.0,2632.3 5552.0,5483.6 5020.7,5158.8 5007.7,6261.9 3833.3,6248.6 2917.9,5658.0 1834.9,5505.4 533.8,4808.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0663/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2208.0,1584.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6391154,39.3300774]}},{"type":"Feature","properties":{"resourceCoords":[3900.0,1584.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6381733,39.3302563]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0664/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p664","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0664/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0664/info.json","type":"ImageService2","height":8152,"width":5552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5437.2,0.0 5552.0,170.6 5552.0,7448.9 5112.3,7056.2 4958.5,8152.0 -0.0,8152.0 -0.0,5475.4 1780.0,942.1 -0.0,251.6 0.0,0.0 5437.2,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0664/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6351841409773,39.32848551331157]}},{"type":"Feature","properties":{"resourceCoords":[5552.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63193739133617,39.32864800421409]}},{"type":"Feature","properties":{"resourceCoords":[5552.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63163112120222,39.324934340016945]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63487787084335,39.32477184911443]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0665/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p665","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"15"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0665/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0665/info.json","type":"ImageService2","height":8152,"width":5552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1375.1,8152.0 1376.6,7996.8 555.0,7396.9 487.9,24.9 5096.6,75.2 5037.1,5361.3 5552.0,5706.3 5552.0,7371.4 4880.3,7296.1 4793.5,7745.6 4368.9,7435.3 4065.1,7416.9 3784.7,7546.2 3401.3,8109.1 1375.1,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0665/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1412.0,5236.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6312277,39.3262481]}},{"type":"Feature","properties":{"resourceCoords":[5068.0,3696.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6291499,39.327031]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0666/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p666","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0666/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0666/info.json","type":"ImageService2","height":8152,"width":5552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5552.0,140.4 5552.0,8152.0 4072.4,8152.0 4125.2,7673.1 916.0,7322.2 911.4,5675.6 397.8,5335.4 442.4,108.1 5552.0,140.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0666/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62951017619815,39.32869965878607]}},{"type":"Feature","properties":{"resourceCoords":[5552.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62626656026107,39.32883170333839]}},{"type":"Feature","properties":{"resourceCoords":[5552.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62601767613494,39.325121633002965]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62926129207202,39.32498958845065]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0667/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p667","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0667/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0667/info.json","type":"ImageService2","height":8152,"width":5552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,6659.8 -0.0,2455.2 185.5,2418.7 -0.0,1169.7 4623.5,1211.1 4593.5,6643.9 -0.0,6659.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0667/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[5016.0,6816.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6317486,39.3285778]}},{"type":"Feature","properties":{"resourceCoords":[1900.0,1176.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6337957,39.33107]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0668/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p668","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"14"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0668/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0668/info.json","type":"ImageService2","height":8152,"width":5552},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4733.6,1169.3 4682.8,6843.3 -0.0,6785.1 -0.0,1145.9 4733.6,1169.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0668/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4708.0,4036.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6293254,39.3299362]}},{"type":"Feature","properties":{"resourceCoords":[432.0,1148.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6319298,39.3311393]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0669/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p669","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"12"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0669/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0669/info.json","type":"ImageService2","height":8152,"width":5576},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2146.8,671.0 5042.0,661.1 5059.6,7515.9 1118.9,7529.6 -0.0,1126.8 2146.8,671.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0669/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2232.0,2192.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6344574,39.3334749]}},{"type":"Feature","properties":{"resourceCoords":[3092.0,7512.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6337957,39.33107]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0670/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p670","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"13"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0670/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0670/info.json","type":"ImageService2","height":8152,"width":5576},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,7503.1 -0.0,659.1 5462.5,655.3 5476.2,7515.1 -0.0,7503.1\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0670/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2356.0,3920.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6313563,39.3328045]}},{"type":"Feature","properties":{"resourceCoords":[1196.0,7508.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6319298,39.3311393]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0671/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p671","metadata":[{"label":"streets","value":"9"},{"label":"intersections","value":"16"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0671/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0671/info.json","type":"ImageService2","height":8152,"width":5576},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2872.2,491.6 5576.0,494.3 5576.0,6379.3 5212.7,6374.7 5046.3,7507.8 495.9,7497.4 527.9,3874.1 2872.2,491.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0671/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[512.0,5660.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6294544,39.3320699]}},{"type":"Feature","properties":{"resourceCoords":[5060.0,2052.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.626912,39.3338163]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0672/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p672","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"9"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0672/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0672/info.json","type":"ImageService2","height":8152,"width":5576},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"506.8,6789.7 485.1,1167.3 4977.0,1120.6 4972.8,0.0 5576.0,0.0 5545.1,6772.7 506.8,6789.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0672/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2828.0,1136.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6280161,39.3312988]}},{"type":"Feature","properties":{"resourceCoords":[4988.0,6768.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6265926,39.328759]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0673/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p673","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"7"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0673/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0673/info.json","type":"ImageService2","height":8152,"width":5544},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5544.0,7077.9 178.7,7121.5 123.3,2185.8 1711.2,2229.5 1752.0,418.0 5544.0,380.9 5544.0,7077.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0673/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2312.0,7104.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6388661,39.3301248]}},{"type":"Feature","properties":{"resourceCoords":[1752.0,416.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6400912,39.3330189]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0674/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p674","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0674/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0674/info.json","type":"ImageService2","height":8152,"width":5556},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4881.5,8152.0 229.2,8152.0 261.1,7121.0 1156.6,7133.9 1265.5,438.5 5059.8,379.8 4881.5,8152.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0674/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63870922855615,39.33348058127894]}},{"type":"Feature","properties":{"resourceCoords":[5556.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63557387551347,39.33411316625467]}},{"type":"Feature","properties":{"resourceCoords":[5556.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63438231966497,39.33052977039212]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63751767270765,39.32989718541639]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0675/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p675","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0675/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0675/info.json","type":"ImageService2","height":8152,"width":5556},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"401.4,7927.9 380.6,8152.0 -0.0,8152.0 -0.0,-0.0 1527.6,0.0 1693.0,353.0 3245.4,0.0 5556.0,0.0 5556.0,2440.7 4835.5,2619.2 4865.8,7912.7 401.4,7927.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0675/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64138946293038,39.33643378953389]}},{"type":"Feature","properties":{"resourceCoords":[5556.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63827884835186,39.337019796593715]}},{"type":"Feature","properties":{"resourceCoords":[5556.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63717498182915,39.333464823185196]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64028559640767,39.33287881612537]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0676__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p676 [1]","metadata":[{"label":"streets","value":"7"},{"label":"intersections","value":"10"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5548.0"},{"label":"split_canvas_h","value":"8152.0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0676__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0676/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2658.8 49.8,7860.7 5242.9,7631.1 5272.9,2360.3 5548.0,2358.1 5548.0,2046.0 5280.5,2033.2 5277.8,1500.9 3168.1,2000.1 2908.5,509.7 697.4,1028.5 703.0,2478.5 -0.0,2658.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0676__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3168.0,5708.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.636095,39.3347795]}},{"type":"Feature","properties":{"resourceCoords":[3168.0,7828.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6358076,39.3338379]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0676__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_017 p676 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"3449.6"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2098.4"},{"label":"split_canvas_h","value":"1502.0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0676__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0676/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5548.0,0.0 3502.9,-0.0 3783.8,1451.3 5548.0,1122.4 5548.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0676__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[3449.6,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63574215408775,39.337278662928675]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63452203819213,39.33745422998768]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,1502.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63435995110898,39.33677995097694]}},{"type":"Feature","properties":{"resourceCoords":[3449.6,1502.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6355800670046,39.33660438391794]}},{"type":"Feature","properties":{"resourceCoords":[3765.4,969.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6354538,39.3368693]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0677__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_017 p677 [1]","metadata":[{"label":"streets","value":"8"},{"label":"intersections","value":"6"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5548.0"},{"label":"split_canvas_h","value":"8152.0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0677__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0677/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5208.0,1508.0 5063.9,1501.0 5059.3,0.0 3361.1,0.0 3784.3,1239.2 3272.3,1414.0 1176.9,691.4 1146.0,3716.8 1074.0,3717.4 1832.5,7706.3 5200.2,7701.4 5208.0,1508.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0677__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2760.0,6020.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6329306,39.3349968]}},{"type":"Feature","properties":{"resourceCoords":[5208.0,1508.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6316358,39.3370938]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0677__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_017 p677 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"1184.0"},{"label":"split_canvas_h","value":"3725.6"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0677__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0677/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1155.4,2797.5 1184.0,0.0 197.5,-0.0 162.4,2631.4 1155.4,2797.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0677__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6355668564352,39.33644425275938]}},{"type":"Feature","properties":{"resourceCoords":[1184.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63420739649875,39.336701137396716]}},{"type":"Feature","properties":{"resourceCoords":[1184.0,3725.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63316308632004,39.33339294335736]}},{"type":"Feature","properties":{"resourceCoords":[0.0,3725.6],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63452254625649,39.33313605872002]}},{"type":"Feature","properties":{"resourceCoords":[180.0,1784.8],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6348599,39.3348985]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0678__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_017 p678 [1]","metadata":[{"label":"streets","value":"10"},{"label":"intersections","value":"15"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5548.0"},{"label":"split_canvas_h","value":"8152.0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0678__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0678/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1584.0,6399.0 1597.1,8008.4 3814.2,8011.6 3808.7,7116.8 2742.3,7114.6 2740.0,6356.0 4059.9,6356.1 4042.0,8152.0 5548.0,8152.0 5548.0,5804.8 4799.9,5511.5 5026.4,4933.5 5548.0,4588.6 5548.0,3581.2 4710.3,2593.5 4698.2,2593.6 4665.3,2540.4 4379.6,2203.6 3660.3,1078.1 3159.4,718.5 2689.9,581.5 1504.3,564.6 1504.9,1010.9 -0.0,1526.7 -0.0,3371.6 70.3,3375.3 57.3,6396.6 1584.0,6399.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0678__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3804.0,6356.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6269675,39.334521]}},{"type":"Feature","properties":{"resourceCoords":[2740.0,6356.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6282422,39.3344671]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0678__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_017 p678 [2]","metadata":[{"label":"streets","value":"2"},{"label":"intersections","value":"1"},{"label":"split_canvas_x","value":"2971.2"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"2576.8"},{"label":"split_canvas_h","value":"3581.2"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0678__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0678/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5548.0,0.0 3198.8,-0.0 3558.3,918.7 4379.6,2203.6 5548.0,3581.2 5548.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0678__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[2971.2,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62516621847546,39.33690826912983]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62371841803268,39.33653835403545]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,3581.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62438185364817,39.334984040541826]}},{"type":"Feature","properties":{"resourceCoords":[2971.2,3581.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62582965409095,39.33535395563621]}},{"type":"Feature","properties":{"resourceCoords":[6886.3,864.3],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6231268,39.3359706]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0679/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p679","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0679/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0679/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"358.1,2224.0 982.9,2300.3 1222.3,341.6 4159.1,283.5 4155.1,-0.0 5548.0,-0.0 5548.0,2509.2 5231.6,2514.8 5313.8,8152.0 85.8,8152.0 417.6,5624.9 624.9,5670.5 923.0,4335.7 315.3,4168.6 393.6,2316.4 358.1,2224.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0679/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63841046141015,39.341724666191006]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63697818132569,39.3394587320876]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64125298375863,39.337819597485606]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64268526384309,39.34008553158901]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0680/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p680","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"12"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0680/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0680/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"850.9,545.4 852.0,-0.0 1462.0,-0.0 1484.8,539.0 1972.0,519.4 2014.1,1268.8 2333.1,1258.6 2287.8,504.9 5548.0,356.0 5548.0,2611.6 4630.0,2400.0 4133.8,4584.6 4137.5,6130.7 3764.6,6210.1 3436.4,7654.9 5548.0,8152.0 -0.0,8152.0 -0.0,6098.1 608.0,6102.6 537.9,548.6 850.9,545.4\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0680/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2220.0,3840.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6396842,39.3377155]}},{"type":"Feature","properties":{"resourceCoords":[4132.0,3840.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6391776,39.3369291]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0681/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p681","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0681/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0681/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,2792.5 822.9,0.0 2924.3,0.0 4703.4,372.4 3375.6,5995.3 4567.1,6557.1 4545.6,7530.2 3111.3,7063.9 2875.6,8017.2 679.0,7938.9 -0.0,2792.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0681/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63914417316951,39.339438590077684]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63631005079775,39.34063590805036]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63405128886552,39.33739241421127]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63688541123729,39.3361950962386]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0682__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p682 [1]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5548.0"},{"label":"split_canvas_h","value":"8152.0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0682__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0682/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"252.2,7954.5 925.4,8049.7 1049.9,7898.0 1229.6,7267.4 2862.0,7425.7 4285.7,0.0 0.0,-0.0 -0.0,7490.2 358.5,7598.1 252.2,7954.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0682__1/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63672273680776,39.34043334994171]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63386044586011,39.341579749478285]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63169777308148,39.3383039719282]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63456006402912,39.337157572391625]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0682__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_017 p682 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"2"},{"label":"split_canvas_x","value":"3371.6"},{"label":"split_canvas_y","value":"6300.8"},{"label":"split_canvas_w","value":"2176.4"},{"label":"split_canvas_h","value":"1851.2"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0682__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0682/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"4880.8,8016.9 5086.0,8152.0 5548.0,8152.0 5548.0,6302.8 4983.2,6302.4 3762.0,6301.5 3575.3,6958.2 4880.8,8016.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0682__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3575.3,6956.5],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6341098,39.3373899]}},{"type":"Feature","properties":{"resourceCoords":[4741.3,7900.1],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.633081,39.337146]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0683/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p683","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"4"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0683/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0683/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1570.5,0.0 5548.0,0.0 5548.0,7821.9 1626.5,7835.1 1625.8,8152.0 -0.0,8152.0 -0.0,5204.7 469.4,5269.1 702.2,3626.3 1570.5,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0683/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4256.0,4152.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6363381,39.3424617]}},{"type":"Feature","properties":{"resourceCoords":[4992.0,4028.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6359879,39.3426632]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0685/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p685","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0685/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0685/info.json","type":"ImageService2","height":8152,"width":5556},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"-0.0,-0.0 5556.0,0.0 5556.0,145.4 5274.7,120.3 4582.9,8152.0 -0.0,8152.0 -0.0,-0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0685/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64530644838666,39.343258589849704]}},{"type":"Feature","properties":{"resourceCoords":[5556.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6422406632252,39.34406823726961]}},{"type":"Feature","properties":{"resourceCoords":[5556.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64071535873812,39.340564875599]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64378114389959,39.339755228179094]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0686__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_017 p686 [1]","metadata":[{"label":"streets","value":"6"},{"label":"intersections","value":"8"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"5548.0"},{"label":"split_canvas_h","value":"8152.0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0686__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0686/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 -0.0,8152.0 1343.3,8152.0 1375.4,7529.8 3196.2,7201.3 3134.5,5734.4 5509.3,5499.4 5548.0,0.0 0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0686__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3136.0,2556.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6401987,39.3431742]}},{"type":"Feature","properties":{"resourceCoords":[172.0,7700.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.641187,39.3405502]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0686__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_017 p686 [2]","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"},{"label":"split_canvas_x","value":"3145.6"},{"label":"split_canvas_y","value":"6121.2"},{"label":"split_canvas_w","value":"2402.4"},{"label":"split_canvas_h","value":"2030.8"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0686__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0686/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5548.0,6167.6 5548.0,6121.2 5050.8,6122.0 3275.2,6124.8 3145.6,8152.0 5548.0,8152.0 5548.0,6167.6\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0686__2/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[3145.6,6121.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63976153580721,39.34174994272202]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,6121.2],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63841074682307,39.34211716845165]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63801219666904,39.3412279343447]}},{"type":"Feature","properties":{"resourceCoords":[3145.6,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63936298565318,39.34086070861507]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0688/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p688","metadata":[{"label":"streets","value":"4"},{"label":"intersections","value":"4"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0688/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0688/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5086.2,3520.0 5051.9,7506.1 5548.0,7501.8 5548.0,8152.0 -0.0,8152.0 -0.0,0.0 5548.0,0.0 5548.0,3512.3 5086.2,3520.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0688/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3156.0,5560.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6509116,39.3322587]}},{"type":"Feature","properties":{"resourceCoords":[3156.0,3600.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6512733,39.3330865]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0689/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p689","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"5"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0689/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0689/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"719.9,8082.5 723.6,7438.0 231.8,7439.4 288.0,3488.0 745.9,3483.0 765.5,1.0 5548.0,0.0 5548.0,8152.0 719.9,8082.5\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0689/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[4976.0,5432.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6472887,39.3332546]}},{"type":"Feature","properties":{"resourceCoords":[288.0,3488.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6502341,39.3333958]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0690/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p690","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0690/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0690/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"592.8,8085.7 749.2,0.0 5548.0,0.0 5548.0,5249.5 4037.4,5379.0 4757.2,6719.8 5156.4,8152.0 4328.1,8152.0 3965.7,6959.2 3384.1,7046.1 3485.0,8152.0 592.8,8085.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0690/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64841110401139,39.33552973200033]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64538076282848,39.33639952909948]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64373997294986,39.33293126666696]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.64677031413277,39.33206146956781]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0692__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_017 p692 [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":"5548.0"},{"label":"split_canvas_h","value":"8152.0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0692__1/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0692/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"2643.5,3143.3 3360.5,3268.6 3520.9,2557.6 3353.1,2523.2 3879.2,0.0 606.0,0.0 365.1,0.0 636.1,639.1 757.9,1307.4 382.3,1275.0 267.3,717.3 -0.0,734.2 -0.0,8152.0 1792.0,8152.0 2552.0,8152.0 2639.6,8152.0 2149.0,7903.1 1466.8,7221.0 2045.1,6619.5 2208.5,5316.9 2643.5,3143.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0692__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3380.0,3272.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6398419,39.332219]}},{"type":"Feature","properties":{"resourceCoords":[2972.0,5472.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6391154,39.3300774]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0692__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p692 [2]","metadata":[{"label":"streets","value":"3"},{"label":"intersections","value":"3"},{"label":"split_canvas_x","value":"2739.6"},{"label":"split_canvas_y","value":"3176.8"},{"label":"split_canvas_w","value":"2808.4"},{"label":"split_canvas_h","value":"4975.2"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0692__2/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0692/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"3960.4,5198.3 2802.4,3952.0 2739.6,8152.0 5548.0,8152.0 5548.0,5550.4 5092.1,5822.0 4803.1,5336.3 4815.9,4812.1 4606.8,4329.0 4566.6,3619.6 3834.7,3594.0 3797.3,4630.0 3827.7,4798.1 3960.3,5197.7 3960.4,5198.3\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0692__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[3914.1,3596.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6398681,39.3279458]}},{"type":"Feature","properties":{"resourceCoords":[3330.8,3596.7],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6400802,39.32743]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0693/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p693","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0693/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0693/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,0.0 5548.0,0.0 5548.0,6683.9 3987.3,7211.5 3986.0,8152.0 3059.0,8152.0 2972.2,7895.6 2701.7,7985.9 2628.3,7671.0 1205.6,8152.0 308.4,8152.0 -0.0,7504.7 0.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0693/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63691931755015,39.345091157353906]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63050794454814,39.34537303790633]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62997614837417,39.33803590498786]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.63638752137618,39.33775402443544]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0694/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p694","metadata":[{"label":"streets","value":"13"},{"label":"intersections","value":"27"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0694/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0694/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"698.1,6075.9 708.2,4857.6 260.7,4824.2 266.8,3800.1 716.7,3831.0 734.1,1741.7 268.1,1737.9 273.5,824.1 771.2,788.0 748.5,0.0 5548.0,0.0 5548.0,541.5 4874.1,554.0 4752.9,4363.7 4841.7,4349.3 4737.9,5293.3 5548.0,6283.2 5548.0,8152.0 3887.4,8152.0 3045.2,6746.0 2753.4,6470.3 2056.8,6137.1 698.1,6075.9\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0694/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[2108.0,1988.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.6287397,39.3436118]}},{"type":"Feature","properties":{"resourceCoords":[3800.0,2332.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-76.626703,39.343393]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0695/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p695","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0695/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0695/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"903.6,8129.8 849.8,6271.5 -0.0,5278.4 77.7,4326.3 -0.0,4341.8 -0.0,509.1 682.0,477.4 668.2,0.0 5548.0,0.0 5548.0,2848.3 4997.5,2828.9 4992.9,4274.1 5548.0,4667.4 5548.0,8152.0 903.6,8129.8\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0695/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6255844181245,39.34555700102591]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61906856517929,39.34573876319133]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61872565100745,39.338282095902414]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.62524150395267,39.338100333736996]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0696/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p696","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0696/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0696/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"543.4,0.0 5548.0,0.0 5548.0,8152.0 -0.0,8152.0 -0.0,2729.5 543.4,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0696/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61970029199934,39.345622662288676]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61320308834377,39.34578763638884]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6128918457871,39.3383523327057]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61938904944267,39.33818735860554]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0697/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p697","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0697/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0697/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"5548.0,0.0 5548.0,8152.0 -0.0,8152.0 0.0,0.0 5548.0,0.0\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0697/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61582691864872,39.34608808449142]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6093528122329,39.34610943500348]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.6093125318015,39.338700608015124]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61578663821733,39.33867925750307]}}]}},{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0698/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Baltimore, Maryland | 1928 | sanborn03573_017 p698","metadata":[{"label":"streets","value":"0"},{"label":"intersections","value":"0"}],"created":"2026-09-21T13:25:39Z","modified":"2026-09-21T13:25:39Z","motivation":"georeferencing","target":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0698/selector","type":"SpecificResource","source":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0698/info.json","type":"ImageService2","height":8152,"width":5548},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1406.9,7041.7 987.2,8152.0 -0.0,8152.0 -0.0,1833.7 241.7,1685.4 -0.0,1234.9 -0.0,-0.0 2171.0,0.0 2762.6,542.0 3194.9,806.9 3846.0,1063.7 4567.6,1187.1 4480.4,0.0 5548.0,0.0 5548.0,8152.0 5114.6,8152.0 5060.4,7330.0 4040.7,7397.3 3940.0,7268.2 3249.1,7851.1 2871.5,7398.9 2811.4,7446.7 1406.9,7041.7\" /></svg>"}},"body":{"id":"https://tile.loc.gov/image-services/iiif/service:gmd:gmd384m:g3844m:g3844bm:g3844bm_g03573192806:03573_06_1928-0698/gcps","type":"FeatureCollection","transformation":{"type":"polynomial","options":{"order":1}},"features":[{"type":"Feature","properties":{"resourceCoords":[0.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61482415028937,39.34107696237266]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,0.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60832608780842,39.34081712560607]}},{"type":"Feature","properties":{"resourceCoords":[5548.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.60881626669287,39.333380338925245]}},{"type":"Feature","properties":{"resourceCoords":[0.0,8152.0],"type":"corner"},"geometry":{"type":"Point","coordinates":[-76.61531432917381,39.33364017569183]}}]}}]}