Authors: Ro
- Breckinridge, Robert J. (Robert Jefferson) 1800-1871 2 books
- Mackenzie, R. Shelton (Robert Shelton) 1809-1880 2 books
- Holloway, Robert, active 1771-1808 - 2 books
- Eustace, Robert 1869-1943 2 books
- Tanner, Charles R. 1896-1974 2 books
- Langland, William - 2 books
- Wells, Samuel R. (Samuel Roberts) 1820-1875 2 books
- Robert, Henry M. (Henry Martyn) 1837-1923 2 books
- Townsend, R. S. - 2 books
- Christman, Robert A. (Robert Adam) 1924-2012 2 books
- Roughead, William 1870-1952 2 books
- Hopkins, R. Thurston (Robert Thurston) 1884-1958 2 books
- Shufeldt, Robert W. (Robert Wilson) 1850-1934 2 books
- Kingsley, Rose Georgina 1845-1925 2 books
- Playfair, Nigel 1874-1934 2 books
- Mittis - 2 books
- Shrader, E. Roscoe (Edwin Roscoe) 1879-1960 2 books
- Rogers, Samuel 1763-1855 2 books
- Kester, Roy B. (Roy Bernard) 1882-1965 2 books
- Robert, de Boron, active 13th century - 2 books
- Zhong, Rong, active 502-519 - 2 books
- Roche, Charles E. (Charles Emile) 1847-1935 2 books
- Delany, Martin Robison 1812-1885 2 books
- Scott, Robert - 2 books
- Wason, Robert Alexander 1874-1955 2 books
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