Names
- Rodgers, George Washington, 1787-1832.1
- Romney, George W., 1907-1995.1
- Roosevelt, Theodore, 1858-1919.1
- Round Table Club (University of Michigan)1
- Ruthven, Alexander Grant, 1882-1971.1
- San Martín, José de, 1778-1850.1
- Sault Sainte Marie Canal (Mich.)1
- Savery, Asahel.1
- Schroeder, John Frederick, 1800-1857.1
- Schwarz, J. E., 1799-1858.1
- Seaman, Ezra C. (Ezra Champion), 1805-1880.1
- Selkirk, James, 1790-1877.1
- Shafter, William Rufus, 1835-1906.1
- Shearer, Jonathan, 1796-1881.1
- Shook, Jacob, 1779-1862.1
- Shubrick, William Branford, 1790-1874.1
- Sibley, John Langdon, 1804-1885.1
- Silver, Abiel, 1797-1881.1
- Sleeper, Albert E., 1862-1934.1
- Smith, Arvilla Almira Powers, 1808-1895.1