Authors: R. (sorted by popularity)
- Austin, Robert 1895-1973 106 downloads
- Garnett, R. S. (Robert Singleton) 1866-1932 106 downloads
- Francillon, R. E. (Robert Edward) 1841-1919 106 downloads
- Kirkpatrick, George R. (George Ross) 1867-1937 106 downloads
- Buxton, Robert Hugh 1871- 106 downloads
- Brummer, F. F. (Frans Ferdinand) 1847-1893 105 downloads
- Ford, Gerald R. 1913-2006 105 downloads
- Coleman-Norton, Paul R. (Paul Robinson) - 104 downloads
- Murphy, Charles Royier 1884- 104 downloads
- Carpenter, George R. (George Rice) 1863-1909 103 downloads
- Bevan, Edwyn Robert 1870-1943 103 downloads
- Hall, H. R. Wilton - 103 downloads
- Willis, Edwin R. - 102 downloads
- Wenckebach, L. W. R. (Ludwig Willem Reymert) 1860-1937 102 downloads
- Herford, R. Travers (Robert Travers) 1860-1950 102 downloads
- Horne, R. H. (Richard H.) 1802-1884 102 downloads
- Murphy, R. K. 1927-1952 102 downloads
- Moony, R. J. E. - 102 downloads
- Putnam, G. R. (George Rockwell) 1865- 102 downloads
- Horton, Robert F. (Robert Forman) 1855-1934 102 downloads
- Wooldridge, Clifton R. (Clifton Rodman) 1854-1933 102 downloads
- Moore, Joel R. (Joel Roscoe) 1879- 101 downloads
- McKenzie, Roderick Duncan 1885-1940 101 downloads
- Flanagan, J. R. - 101 downloads
- Creswell, R. J. (Robert J.) - 101 downloads