Names
- Pennsylvania Railroad.1
- Penrod, John.1
- Penrod/Hiawatha Company.1
- Ransom B. Fuller (Steamer)1
- Robbins, Frank, 1846-1924.1
- Rockefeller, John D., III (John Davison), 1906-1978--Portraits.1
- Roebling, John A. (John Augustus), 1806-1869--Portraits.1
- Roebling, Washington Augustus, 1837-1926--Portraits.1
- Sheehan & Co.1
- Smithsonian Institution.1
- Society of Women Engineers.1
- Steinway & Sons.1
- Stephenson, George, 1781-1848--Portraits.1
- Stephenson, Robert, 1803-1859--Portraits.1
- Strobridge Lithographing Company.1
- Tau Beta Pi. Gamma Chapter (University of Michigan)1
- Treadwell, T. K.1
- Trinity Church (Boston, Mass.)1
- Underwood & Underwood.1
- United States Capitol (Washington, D.C.)1