1,895 documents - page 1 of 95
American Society of Mechanical Engineers Collection
Industrial Archaeology Collection
Division of Community Life World's Fairs Collection
Bollman Truss Bridge Collection
Savage Bridge restoration
Historic American Engineering Survey filies
Vogel, Robert. "Speculations on the History and Original Appearance of the Last Bollman Truss" (manuscript)
Lomabrd Street Bridge, Baltimore, Maryland
Bollman truss advertisements (photocopies)
Lang, P.G. "Various Types of Railroad Bridges"
Bollman truss articles (photocopies)
Valley Railroad of Virginia (Bollman trusses)
Illinois Central Railroiad Bridge, Kankakee River, Kankakee, Illinois
Baltimore and Ohio Railroad
Bollman Bridge, Union Mills, Maryland
Bollman Bridge, Hughes Run Road, Carroll County, Maryland
Bollman Bridge, Central Ohio Railroad, Muskingham River, Zanesville, Ohio