Authors: Martin Don
- Reed, Louis Custer Martin 1879-
- Ross, Martin 1862-1915
- Ruiz Contreras, Luis 1863-1953
- Ruud, Martin B. (Martin Bronn) 1885-1941
- Saint-Martin, J. (Jean) 1791-1832
- Samarow, Gregor 1829-1903
- San Martín, Bernardo Morales -
- Sayler, Oliver M. 1887-1958
- Scanlan, Charles Martin 1854-1940
- Schian, Martin 1869-1944
- Schneider, Martin -
- Scott, Martin J. (Martin Jerome) 1865-1964
- Seip, M. -
- Silverberg, Robert 1935-
- Snoek, Johan M. 1920-2012
- Sommer, Martin Samuel 1869-1949
- Stainforth, Martin 1866-1957
- Steffen, Mart R. (Martin Robert) 1882-
- Stendal, Russell 1955-
- Stern, Sigmon M. (Sigmon Martin) -
- Sullivan, A. M. (Alexander Martin) 1830-1884
- Sumichrast, Frederick C. de (Frederick Caesar de) 1845-1933
- Thayer, M. Russell (Martin Russell) 1819-1906
- Thérèse, de Lisieux, Saint 1873-1897
- Townsend, Martin I. (Martin Ingham) 1810-1903
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