Names
- People's Reconstruction League.1
- Perkins, Frances, 1880-1965.1
- Perkins, Frances, 1882-1965.1
- Person, Seymour Howe, 1879-1957.1
- Pettigrew, Richard Franklin, 1848-19261
- Pettigrew, Richard Franklin, 1848-1926.1
- Pinchot, Gifford, 1865-1946.1
- Pollock, James K. (James Kerr), 1898-1968.1
- Pollock, James Kerr, 1898-1968.1
- Potter, William W., 1869-1940.1
- Powers, Perry Francis, 1857-19451
- Powers, Perry Francis, 1857-1945.1
- Progressive Party (1912)1
- Progressive Republicans' League of Michigan1
- Progressive Republicans' League of Michigan.1
- Progressive Voters League of Michigan1
- Progressive Voters League of Michigan.1
- Read, Thomas, 1881-1
- Reichert, Rudolph Edward, 1887-19651
- Reichert, Rudolph Edward, 1887-1965.1