Names
- Rufus, Will Carl, 1876-1946.1
- Russell, Henry Norris, 1877-1957.1
- Ruthven, Alexander Grant, 1882-1
- Ruthven, Alexander Grant, 1882-1971.1
- Sass, Samuel, 1915-1
- Sawyer, H. E.1
- Schauer, Charles Hawver, 1912-1
- Schriever, Bernard A.1
- Scripps, William Edmund, 1882-1952.1
- Shaeberle, John Martin.1
- Shapley, Harlow, 1885-1
- Shirley, Joseph W.1
- Smith, Shirley Wheeler, 1875-1959.1
- Stason, E. Blythe (Edwin Blythe), 1891-1972.1
- Stebbins, Joel, 1878-1
- Stebbins, Joel, 1878-1966.1
- Stetson, Harlan True, 1885-1964.1
- Stone, Julius Frederick, 1855-1947.1
- Stone, Julius Frederick., 1855-1947.1
- Struve, Otto, 1897-1963.1