Names
- People's Lobby.1
- Phelps, William Lyon, 1865-1943.1
- Pinchot, Amos Richards Eno, 1873-1944.1
- Pinchot, Gifford, 1865-19461
- Pinchot, Gifford, 1865-1946.1
- Plans for Progress.1
- Polk, Wardell.1
- Republican Party (Mich.)1
- Sigler, Kim, 1894-1
- Sigler, Kim, b. 1894.1
- Silvera, Frank, 1914-1970.1
- Spann, Ray.1
- Spencer family.1
- Spencer, Anne, 1882-1975.1
- Spencer, Chauncey E. (Chauncey Edward), 1906-2002.1
- Spencer, Chauncey E., 1906-1
- Spencer, Edward A., -1964.1
- Stone, Irving, 1903-1
- Stone, Irving, 1903-1989.1
- Sullivan, Mark, 1874-1952.1