Authors: R.
- Leonard, R. M. (Robert Maynard) - 2866 downloads
- Macaulay, Rose 1881-1958 2844 downloads
- Richards, Harriet Roosevelt -1932 2832 downloads
- Streatfeild, R. A. (Richard Alexander) 1866-1919 2814 downloads
- Lyttelton, R. H. (Robert Henry) 1854-1939 2781 downloads
- Newmark, Marco Ross 1878-1959 2778 downloads
- Shaw, Edward R. (Edward Richard) 1855-1903 2756 downloads
- Riggs, Stephen Return 1812-1883 2696 downloads
- Wollaston, A. F. R. (Alexander Frederick Richmond) 1875-1930 2684 downloads
- Douglas, Robert B. (Robert Bruce) 1848-1927 2683 downloads
- Edmonds, Cyrus R. - 2673 downloads
- Macduff, John R. (John Ross) 1818-1895 2594 downloads
- Maturin, Charles Robert 1780-1824 2592 downloads
- Lydekker, Richard 1849-1915 2574 downloads
- Lafferty, R. A. 1914-2002 2572 downloads
- Chambers, R. W. (Raymond Wilson) 1874-1942 2557 downloads
- Coe, Wesley R. (Wesley Roswell) 1869-1960 2489 downloads
- Lull, Richard Swann 1867-1957 2489 downloads
- Audubon, Maria R. (Maria Rebecca) 1843-1925 2472 downloads
- Browne, R. W. (Robert William) 1809-1895 2467 downloads
- Marshall, Herbert, R. W. S. 1841-1913 2413 downloads
- Ramón y Cajal, Santiago 1852-1934 2389 downloads
- Tombs, Robert Charles 1842-1923 2377 downloads
- Wellington, R. (Richard) 1884-1975 2362 downloads
- Tolkien, J. R. R. (John Ronald Reuel) 1892-1973 2358 downloads
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