Names
- Nearing, Scott, 1883-1983.1
- O'Hara, Geoffrey, 1882-1967.1
- Olmsted, Mildred Scott1
- Olmsted, Mildred Scott, 1890-1990.1
- Paine, Albert Bigelow, 1861-19371
- Paine, Albert Bigelow, 1861-1937.1
- Paquin, Samuel Savil, 1868-19431
- Paquin, Samuel Savil, 1868-1943.1
- Parkhurst, C. H. (Charles Henry), 1842-1933.1
- Parkhurst, Charles Henry, 1842-1933.1
- Peale, Norman Vincent, 1898-1
- Peale, Norman Vincent, 1898-1993.1
- Pennsylvania Committee for Total Disarmament1
- Pennsylvania Committee for Total Disarmament.1
- People's Chorus of New York.1
- People's Council of America1
- People's Council of America.1
- People's Mandate to Governments to End War1
- People's Mandate to Governments to End War.1
- Phelps, William Lyan, 1865-1943.1