Authors: F.
- Schiller, F. C. S. (Ferdinand Canning Scott) 1864-1937
- Schimper, A. F. W. (Andreas Franz Wilhelm) 1856-1901
- Schlitte, F. -
- Schmeckebier, Laurence Frederick 1877-1959
- Schmied, François-Louis 1873-1941
- Schneegans, F. Ed. (Friedrich Edward) 1867-1942
- Schneider, Norris F. (Norris Franz) 1898-1993
- Scholz, R. F. (Richard Frederick) -
- Schook, F. De Forest 1872-1942
- Schottky, Friedrich 1851-1935
- Schrage, Dorothea Auguste Gunhilde -
- Schuler, Phillip F. E. (Frederick Edward) 1879-1917
- Schwatka, Frederick 1849-1892
- Schwormstädt, Felix 1870-1938
- Scott, Robert Falcon 1868-1912
- Scribner, B. F. (Benjamin Franklin) 1825-1900
- Scribner, Frank Kimball 1866-1935
- Scrivener, Frederick Henry Ambrose 1813-1891
- Scudamore, Frank 1859-1939
- Sears, F. W. (Franklin Warren) 1863-
- Seebohm, Frederic 1833-1912
- Selous, Frederick Courteney 1851-1917
- Sessions, Barbara F. -
- Seymour, Mary, active 1880-1896 -
- Shambaugh, Benjamin Franklin 1871-1940
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