Names
- McClelland, Robert, 1807-1880.1
- Meigs, Montgomery, 1847-1931.1
- Meigs, Return Jonathan, 1740-1823.1
- Mount Washington Cog Railway.1
- New York Elevated Railway Company.1
- Nicoll, A. Y. (Abimael Youngs)1
- Northern Pacific Railway Company.1
- O'Bannon, Presley Neville, 1776-1850.1
- Parker, Daniel, 1782-1846.1
- Partridge, Alden, 1785-1854.1
- Pennsylvania Railroad.1
- Peter, George, 1779-1861.1
- Pinkney, lieutenant-colonel (Ninian), 1776-1825.1
- Porter, Moses, 1755-1822.1
- Rhea, James.1
- Rivard, John J. U. (John Jacob Ulrich)1
- Roane, Archibald, 1759-1819.1
- Robbins, Frank, 1846-1924.1
- Rockefeller, John D., III (John Davison), 1906-1978--Portraits.1
- Roebling, John A. (John Augustus), 1806-1869--Portraits.1