Authors: Robert
- Rogers, Robert Emmons 1888-1941 522 downloads
- Hellyer, C. R. (Clifton Robert) 1875-1948 521 downloads
- Anderson, Robert E. (Robert Edward), M.A., F.A.S. - 519 downloads
- Tymms, W. R. (William Robert) - 518 downloads
- Austin, Robert 1895-1973 514 downloads
- Fortune, Robert 1813-1880 512 downloads
- Gay, Robert M. (Robert Malcolm) 1879-1961 512 downloads
- Lansing, Robert 1864-1928 512 downloads
- Bertram, Robert J. S. 1871-1953 511 downloads
- Lubbers, Bob 1922-2017 511 downloads
- Lundie, R. H. (Robert Henry) 1824-1885 510 downloads
- Roberts, Cecil 1892-1976 510 downloads
- Ellis, Robert Leslie 1817-1859 510 downloads
- Herford, R. Travers (Robert Travers) 1860-1950 504 downloads
- Selander, Robert K. - 503 downloads
- Barclay, Robert 1648-1690 499 downloads
- Brown, Robert 1842-1895 494 downloads
- Traz, Robert de 1884-1951 493 downloads
- Cunningham, Robert Hays - 490 downloads
- Wilson, Robert W. (Robert Warren) 1909-2006 489 downloads
- Sim, Robert J. - 489 downloads
- Moton, Robert Russa 1867-1940 486 downloads
- Wicks, Robert - 484 downloads
- Fremantle, E. R. Sir 1836-1929 478 downloads
- Trevelyan, R. C. (Robert Calverley) 1872-1951 478 downloads
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