Names
- National Security League.1
- Navy League of the United States1
- Navy League of the United States.1
- Nelson, DeWitt, 1901-1
- Organization for Tropical Studies.1
- Pack, Charles Lathrop, 1857-1937.1
- People's Lobby1
- People's Lobby.1
- Phelps, William Lyon, 1865-1943.1
- Pinchot Institute for Conservation Studies.1
- Pinchot, Amos Richards Eno, 1873-1944.1
- Pinchot, Gifford, 1865-19461
- Pomeroy, Kenneth Brownridge, 1907-1
- Proxmire, William.1
- Republican Party (Mich.)1
- Rockefeller, Laurance S., 1910-1
- Roosevelt, Nicholas, 1893-1
- Roosevelt, Nicholas, 1893-1982.1
- Rostow, W. W. (Walt Whitman), 1916-2003.1
- Saltonstall, Leverett, 1892-1979.1