Authors: F.
- Collins, F. B. (Florence Belle) 1867-1921 374 downloads
- Zwirner, William F. - 374 downloads
- Allen, F. G. (Frank Gibbs) 1836-1887 373 downloads
- Bowman, Florence L. 1880- 373 downloads
- Eckman, F. A. - 372 downloads
- Wieck, Friedrich 1785-1873 372 downloads
- Hexamer, F. M. (Fred Maier) - 372 downloads
- Lengemann, F. W. (Frederick W.) - 371 downloads
- Ross, F. A. (Frederick Augustus) 1796-1883 371 downloads
- Dobson, J. F. (John Frederic) 1875-1947 371 downloads
- Bayard, Jean-François-Alfred 1796-1853 370 downloads
- Crummer, Wilbur F. (Wilbur Fisk) 1843-1920 368 downloads
- Granlund, J. F. (Johan Fredrik) 1809-1874 368 downloads
- Skeel-Giørling, Frederik 1876-1910 368 downloads
- Burghard, F. F. (Frédéric François) 1864-1947 368 downloads
- Hoisington, May Folwell 1874- 365 downloads
- Martin, F. Lestar - 365 downloads
- Forel, F. A. (François Alphonse) 1841-1912 365 downloads
- Underhill, Edward F. (Edward Fitch) 1830-1898 365 downloads
- Cuming, Fortescue 1762-1828 365 downloads
- Bird, Frederic Mayer 1838-1908 364 downloads
- Corona Bustamante, F. (Francisco) - 364 downloads
- Emanuel, Frank L. (Frank Lewis) 1865-1948 363 downloads
- Hunter, Andrew Frederick 1863-1940 363 downloads
- Brown, Karl F. (Karl Frederick) 1900-1981 363 downloads
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