Names
- Pierce, Austin Keith, 1918-1
- Portage Lake Observatory (University of Michigan)1
- Putnam, Herbert, 1861-1955.1
- Rabaut, Louis Charles, 1886-1
- Rabaut, Louis Charles, 1886-1961.1
- Rich, John Treadway, 1841-1926.1
- Ridgely, Benjamin H., 1861-1908.1
- Robertson, Jno. (John), 1814-1887.1
- Rosencrans, William Starke, 1819-1898.1
- Röosch, Jean1
- Röosch, Jean.1
- Schley, Winfield Scott, 1839-1911.1
- Seeger, Raymond John, 1906-1
- Shane, Charles Donald, 1895-1
- Shane, Charles Donald, 1895-1983.1
- Shapley, Harlow, 1885-19721
- Shapley, Harlow, 1885-1972.1
- Sheridan, George Augustus, 1840-1896.1
- Sherman, John, 1823-1900.1
- Skidmore, Owings and Merrill (architectural firm)1