Bollman truss advertisements (photocopies)
name: label: Collection Creator
content: Vogel, Robert M.
label: Collection Creator
content: Bollman, Wendell, 1814-1884
setName: label: See more items in
content: Bollman Truss Bridge Collection
unitdate: label: Date
content: 1855-1860
container: label: Container
content: Box 2, Folder 4
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials