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Mauro Poggi (Italian, 18th Century)
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Percy J. Billinghurst (English, 1871-1933)
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Charles Maurice Detmold (English, 1883-1908)
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Willem Wenckebach (Dutch, 1860–1937)
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George Barbier (French, 1882 - 1932)
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David Young Cameron (Scottish, 1865 - 1945)
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Zut (Alfred Le Petit) (French, 1841-1909)
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William Henry Walker (American, 1871-1938)
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Edoardo de Fonseca (Editor) (Italian, 1867-1936)
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Jules-Edmond-Charles Lachaise (French, ?-1897)
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Gifford Pinchot (American, 1865-1946)
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Lorenz Oken (German, 1779 – 1851)
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Anonymous
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Sir John Tenniel (English, 1820-1914)
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Ernst Haeckel (German, 1834-1919)
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Helen Marguerite O'Kane (English, 1879-?)
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Matthew Digby Wyatt (English, 1820-1877)
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George Barbier (French, 1882 - 1932)
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Joseph Ferdinand Keppler (American, 1838 – 1894)
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Max Klinger (German, 1857-1920)
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Alfred Edward Chalon (English, 1780-1860)
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Boleslaw Starzyński (Polish, 1834 - 1917)
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Vilmos Aba-Novák (Hungarian, 1894–1942)
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Thomas Geminus (Flemish, 1510 – 1562)
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Charles Dana Gibson (American, 1867 - 1944)