Thomas Viaduct, ­copy of engraving, from south end, with Relay House
name: label: Collection Creator
content: Baltimore and Ohio Railroad Company
label: Collection Author
content: Garrett, John W. (John Work), 1820-1884
label: Collection Author
content: Latrobe, Benj. H. (Benjamin Henry), 1807-1878
setName: label: See more items in
content: Baltimore and Ohio Railroad Records
label: See more items in
content: Baltimore and Ohio Railroad Records / Series 9: Negatives / 9.3: Small film negatives (#1993-#2315), 35mm to post card size
unitdate: label: Date
content: circa 1880
container: label: Container
content: Box 32, Item 2496
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Negatives