Names
- Ormandy, Eugene, 1899-1985.1
- Osborn, Chase S. (Chase Salmon), 1860-1
- Osborn, Stellanova, 1894-1988.1
- Oswald, Marina, 1941-1
- Owen, Norman G., collector1
- Pere Marquette Railroad.1
- Piercy, Marge.1
- Pierpoint, Wilbur K., 1914-1
- Plamondon, Genie.1
- Poindexter, Miles, 1868-1946.1
- Potter, Paul, 1939-1
- Potts, Randy.1
- Power, Eugene B., 1905-1
- Procter, William Cooper, 1862-1934.1
- Rainbow Peoples Party (Ann Arbor, Mich.)1
- Raulet, Nais.1
- Republican Party (Mich.)1
- Rich, John Treadway, 1841-1926.1
- Roosevelt, Eleanor, 1884-1962.2
- Roosevelt, Franklin D. (Franklin Delano), 1882-1945.1