Authors: R.
- Bernard, Richard Boyle 1787-1850 539 downloads
- Gustavson, Lealand 1899-1966 537 downloads
- Hutton, Richard Holt 1826-1897 537 downloads
- Ainsworth, Ralph Bignell, Sir 1875-1952 537 downloads
- Brunck, Rich. Fr. Phil. (Richard François Philippe) 1729-1803 537 downloads
- Brown, R. H. (Robert Hanbury) 1849-1926 534 downloads
- Sullivan, James R. - 533 downloads
- Chantelauze, R. de (Régis) 1821-1888 529 downloads
- Newton, Richard Heber 1840-1914 529 downloads
- Cross, R., active 1898 - 528 downloads
- Dunstan, Wyndham R. (Wyndham Rowland) 1861-1949 528 downloads
- Corliss, William R. 1926-2011 526 downloads
- Nursey, Walter R. 1847-1927 526 downloads
- Corson, Caroline Rollin -1901 525 downloads
- King, R. J. (Richard John) 1818-1879 525 downloads
- Alsaker, Rasmus Larssen 1883-1960 523 downloads
- Tatham, Edward H. R. (Edward Henry Ralph) 1857-1938 522 downloads
- Rodden, Robert J. - 521 downloads
- Whitehead, Donald R. (Donald Reed) 1932-2018 521 downloads
- Ingersoll, R. Sturgis (Robert Sturgis) 1891- 520 downloads
- Harlan, Richard 1796-1843 519 downloads
- Winston, W. R. - 516 downloads
- Lambdin, Robert Lynn 1886-1981 515 downloads
- Köhler, Reinhold 1830-1892 515 downloads
- Waud, Alfred R. (Alfred Rudolph) 1828-1891 514 downloads
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