John Gould (English, 1804-1881)
Charles Atwood Kofoid (American, 1865-1947)
Emile-Allain Séguy (French, 1877-1951)
Emil Jakob Schindler (Austrian, 1842 – 1892)
Joseph Smit (Dutch, 1836 – 1929)
Edward Julius Detmold (English, 1883-1957)
Isaac van Haastert (Dutch, 1753-1834)
Jan Swammerdam (Dutch, 1637 – 1680)
Johann Friedrich Naumann (German, 1780 – 1857)
Julius Hamburger (Austrian, 1830–1909)
Mark Catesby (English, 1683 – 1749)
Jean Gabriel Prêtre (Swiss, 1768 – 1849)
Louis-Isidore Duperrey (French, 1786 – 1865)
Louis Wiesenberg (American, 1893-1943)
Hugo Engl (Austrian, 1852-1926)
Aert Schouman (Dutch, 1710-1792)
James Seymour (English, 1697-1752)
René de Rabié (French, 1700-1785)
George Hudson (New Zealander, 1867 – 1946)
Saverio Manetti (Italian, 1723 – 1785)
Léo-Paul Robert (Swiss, 1851 - 1923)
Léo-Paul Robert (Swiss, 1851 - 1923)
William Saville-Kent (English, 1845 – 1908)
Emil Volkers (German, 1831-1905)
Jean-Baptiste Audebert (French, 1759-1800)
Emil August Göldi (Swiss, 1859-1917)
Saverio Manetti (Italian, 1723 – 1785)
Saverio Manetti (Italian, 1723 – 1785)
Hans Haag (Austrian, 1841 - 1919)
Tako Hajo Jelgersma (Dutch, 1702-1795)
Saverio Manetti (Italian, 1723 – 1785)
Luigi Balugani (Italian, 1737-1770)
Saverio Manetti (Italian, 1723 – 1785)
Saverio Manetti (Italian, 1723 – 1785)
Joseph Heike (circle) (Austrian, 1811 - 1861)
James Duncan (Canadian, 1806-1881)
Sir Andrew Smith (English, 1797-1872)
Arthur Fitzwilliam Tait (American, 1819-1905)
Theo van Hoytema (Dutch, 1863-1917)
Charles Hamilton Smith (English, 1776-1859)
Heinrich Von Zügel (German, 1850 - 1941)
Harry Bright (English, 1846-1895)
Philipp Franz Balthasar von Siebold (German, 1796 – 1866)
John Gould (English, 1804-1881)
Filippo Buonanni (Italian, 1638 – 1723)
Saverio Manetti (Italian, 1723 – 1785)
Marcus Elieser Bloch (German, 1723–1799)
Coenraad Jacob Temminck (Dutch, 1778-1858)
Rodolpho von Ihering (Brazilian, 1883-1939)
Anton Schrödl (Austrian, 1820-1906)
Johann Friedrich Naumann (German, 1780 – 1857)
Johann Friedrich Naumann (German, 1780 – 1857)
Louis Agassiz (American, 1807 – 1873)
John Gould (English, 1804-1881)
Jakob Bogdány (Hungarian, 1660–1724)
Joseph Wolf (German, 1820-1899)
Saverio Manetti (Italian, 1723 – 1785)
Richard Friese (German, 1854-1918)
George Shaw (English, 1751 – 1813)
William Henry Howe (American, 1846-1929)
John James Audubon (American, 1785-1851)
Joseph Wolf (German, 1820-1899)
John James Audubon (American, 1785-1851)
Coenraad Jacob Temminck (Dutch, 1778-1858)