Authors: R. (sorted by popularity)
- Lillie, R. - 138 downloads
- Gronow, R. H. (Rees Howell) 1794-1865 138 downloads
- Rogers, R. Vashon (Robert Vashon) 1843-1911 137 downloads
- Crawford, Robert 1831-1914 137 downloads
- Clephan, R. Coltman (Robert Coltman) - 136 downloads
- Cruttwell, C. R. M. F. (Charles Robert Mowbray Fraser) 1887-1941 135 downloads
- Dibble, Roy F. (Roy Floyd) 1887-1929 135 downloads
- Breckinridge, Robert J. (Robert Jefferson) 1800-1871 134 downloads
- Eyster, William R. (William Reynolds) 1841-1918 134 downloads
- Glasgow, G. R. (Geraldine Robertson) - 134 downloads
- Ingersoll, R. Sturgis (Robert Sturgis) 1891- 133 downloads
- Mason, R. Osgood (Rufus Osgood) 1830-1903 133 downloads
- Weeden, Eleanor R. - 132 downloads
- Birt, C. R. - 132 downloads
- Punnett, Reginald Crundall 1875-1967 132 downloads
- Borland, Robert -1912 130 downloads
- Tyas, Robert 1811-1879 129 downloads
- Quick, Robert Hebert 1831-1891 129 downloads
- Thompson, Arthur R. (Arthur Ripley) 1872- 129 downloads
- Cumberland, Richard 1732-1811 129 downloads
- Gamble, R. E., Mrs. - 129 downloads
- Baukhage, Hilmar R. (Hilmar Robert) 1889-1976 128 downloads
- Schottenfels, Gertrude R. - 128 downloads
- Bechdolt, Frederick R. (Frederick Ritchie) 1874-1950 128 downloads
- Beijnen, Laurens Reinhart Koolemans 1852-1879 127 downloads