George Barbier (French, 1882 - 1932)
Udo Keppler (American, 1872 – 1956)
Léon Spilliaert (Belgian, 1881-1946)
Max Klinger (German, 1857-1920)
Willem Pothast (Dutch, 1877-1916)
Konštantín Kövári-Kačmarik (Slovak, 1882-1916)
John Rea Neill (American, 1877 - 1943)
Elizabeth A. Nedwill (American, 19th century)
Louis Pasteur (French, 1822 – 1895)
George Walker (English, 1781–1856)
Thomas Sidney Cooper (English, 1803 - 1902)
George Walker (English, 1781–1856)
Percy J. Billinghurst (English, 1871-1933)
Samuel Collings (English, active 1784–1789)
Helen Marguerite O'Kane (English, 1879-?)
Ernst Haeckel (German, 1834-1919)
Marion T. Ross (American, 1881-1937)
Félix Bracquemond (French, 1833-1914)
Elizabeth A. Nedwill (American, 19th century)
Joris Hoefnagel (Flemish, 1542-1600)
William Salmon (English, 1644–1713)
George Dawe (English, 1781 - 1829)
Armand Rassenfosse (Belgian, 1862 - 1934)
Warwick Goble (English, 1862 – 1943)
Attilio Mussino (Italian, 1878-1954)
James Gwin (Irish, 1720 - 1769)
Elihu Vedder (American, 1836-1923)
Columbia University Teachers College (American, 19th/20th Century)
Henri Boutet (French, 1851-1919)
Will R. Barnes (American, ?-1939)
Miguel Seguí (Publisher) (Spanish, 19th Century)
Georges Goursat (Sem) (French, 1863–1934)
Gertrud Stamm-Hagemann (German, 1890-1939)
Frank Arthur Nankivell (Australian, 1869–1959)
Flaminio Innocenzo Minozzi (Italian, 1735-1817)
Walther Caspari (German, 1869 - 1913)
Anonymous
Max Klinger (German, 1857-1920)
Franz von Matsch (Austrian, 1861 - 1942)
Eddy de Smet (Dutch, 20th Century)
Grant Hamilton (American, 1862-1926)
Władysław Skoczylas (Polish, 1883-1934)
A. Litke (Russian, 19th/20th Century)
Carl Becker (German, 19th Century)