- Politicians--In mass media.1
- Politicians.1
- Postal service.1
- President Lincoln (Ocean liner : 1921).1
- Prohibition.1
- Putnam, George Palmer, 1887-1950.1
- Queen Mary (Steamship)2
- Railroad stations.1
- Religion and culture--Spain.1
- Republic (Steamship)1
- Resolute (Ocean liner).1
- Rockefeller, John D., Jr. (John Davison), 1874-1960.1
- Roma (Ship)1
- Roosevelt, Kermit, 1889-1943.1
- Roosevelt, Leila.1
- Roosevelt, Theodore, 1858-1919.1
- SS France (Ship)1
- SS Santa Clara (steamship).1
- Sailors.2
- Santa Clara I (Ship)2