Pieter Gerardus van Os (Dutch, 1776-1836)
Johann Baptist Dallinger von Dalling (Austrian, 1782–1868)
Conrad Gessner (Swiss, 1764 - 1826)
Louis Agassiz (American, 1807 – 1873)
Fritz Thomsen (Danish, 1819 - 1891)
Sir Andrew Smith (English, 1797-1872)
Zygmunt Waliszewski (Polish, 1897-1936)
John James Audubon (American, 1785-1851)
Constant Troyon (French, 1810-1865)
Carstian Luyckx (Flemish, 1623 – c. 1675)
Jan Brueghel the Younger (Flemish, 1601 - 1678)
Lorenz Oken (German, 1779 – 1851)
Johann Friedrich Wilhelm Herbst (German, 1743-1807)
Odilon Redon (French, 1840-1916)
Lorenz Oken (German, 1779 – 1851)
Richard Roper (English, c.1730-1775)
Mark Catesby (English, 1683 – 1749)
Louis Adolphe Tessier (French, 1858-1915)
Lorenz Oken (German, 1779 – 1851)
Daniel Giraud Elliot (American, 1835 – 1915)
Archibald Thorburn (Scottish, 1860-1935)
Otto Murray Dixon (English, 1885-1917)
Edwin L. Sheppard (American, ?-1904)
Pieter Withoos (Dutch, 1654–1693)
Olaus Murie (American, 1889 - 1963)
Samuel Howitt (English, 1756-1822)
William Holbrook Beard (American, 1824 - 1900)
Paul-Andre Robert (Swiss, 1901-1977)