Authors: R. (sorted by popularity)
- Swanton, John Reed 1873-1958 1005 downloads
- Raspe, Rudolf Erich 1737-1794 1004 downloads
- Sandbach, William R. - 994 downloads
- Stephens, Robert Neilson 1867-1906 939 downloads
- Ramón y Cajal, Santiago 1852-1934 863 downloads
- Lafferty, R. A. 1914-2002 857 downloads
- Delany, Martin Robison 1812-1885 855 downloads
- Macduff, John R. (John Ross) 1818-1895 853 downloads
- Lodge, R. B. (Reginald B.) 1852-1936 843 downloads
- Davey, Richard 1848-1915 830 downloads
- Agg, T. R. (Thomas Radford) 1878-1947 826 downloads
- Noyes, George Rapall 1873-1952 822 downloads
- Busk, Rachel Harriette 1831-1907 818 downloads
- Freeman, Lewis R. (Lewis Ransome) 1878-1960 794 downloads
- Tolkien, J. R. R. (John Ronald Reuel) 1892-1973 782 downloads
- Seton-Watson, R. W. (Robert William) 1879-1951 765 downloads
- Peary, Robert E. (Robert Edwin) 1856-1920 750 downloads
- Pocock, Roger 1865-1941 748 downloads
- Richards, Harriet Roosevelt -1932 744 downloads
- Eucken, Rudolf 1846-1926 743 downloads
- Beazley, C. Raymond (Charles Raymond) 1868-1955 729 downloads
- Dallington, Robert 1561-1637 723 downloads
- Gonçalves Viana, A. R. (Aniceto Reis) 1840-1914 722 downloads
- Rait, Robert S. (Robert Sangster) 1874-1936 719 downloads
- Proctor, Richard A. (Richard Anthony) 1837-1888 706 downloads