Names
- Pierce, Austin Keith, 1918-1
- Pierpont, Wilbur K., 1914-1
- Portage Lake Observatory (University of Michigan)1
- Rabaut, Louis Charles, 1886-1
- Rabaut, Louis Charles, 1886-1961.1
- Röosch, Jean1
- Röosch, Jean.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
- Skidmore, Owings and Merrill (architectural firm)1
- Skidmore, Owings and Merrill.1
- Slottow, Timothy P.1
- Struve, Otto, 1897-1963.1
- Struve, Otto, 1898-19631
- Ströomgren, Bengt Georg Daniel, 1908-1
- Ströomgren, Bengt, 1908-1
- Sturgis, William S.1