Names
- Mill, Sophia.1
- Mount Washington Cog Railway.1
- Muscovy Company.1
- New York Elevated Railway Company.1
- North, Frederick, Lord, 1732-1792.1
- Northern Pacific Railway Company.1
- Ohio Company (1747-1779)1
- Oswald, Richard, 1705-1784.1
- Patterson, Gov. Walter, d. 1798.1
- Penn, John, 1729-1795.1
- Pennsylvania Railroad.1
- Petrovna, Yelizaveta, 1709-1761.1
- Pigot, Sir Robert, 2nd bart., 1720-1796.1
- Pitt, William, Earl of Chatham, 1708-1778.1
- Prussia (Kingdom) Armee.1
- Robbins, Frank, 1846-1924.1
- Rockefeller, John D., III (John Davison), 1906-1978--Portraits.1
- Rockingham, Charles Watson-Wentworth, Marquis of, 1730-1782.1
- Roebling, John A. (John Augustus), 1806-1869--Portraits.1
- Roebling, Washington Augustus, 1837-1926--Portraits.1