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Alan Light - CC BY 2.0
Charles Alfred Zimmerman - Public Domain
Sheldon (Shelly) Levy - CC BY-SA 2.0
Thebogsideartists - CC BY-SA 3.0
Paul Rotterdam - CC BY-SA 3.0
Allan warren - CC BY-SA 3.0
AgnosticPreachersKid - CC BY-SA 3.0
Louis Boilly - Public Domain
George Washington University / Bureau of Animal Industry - Public Domain
Lea-Kim - CC BY-SA 4.0
unknown -
Brown Thurston - Public Domain
Pocketman38 - CC0 1.0
Christian Sigmund Pfann - Public Domain
William Strang (1859-1921) - Public Domain
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Whistler, Rex, 1905-1944
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Slayton, Donald K., 1924-1993
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Alan Light - CC BY 2.0
Stevens, Shadoe
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Charles Alfred Zimmerman - Public Domain
Lind, John, 1854-1930
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Tuckney, Anthony, 1599-1670
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Jones, William, Sir, 1746-1794
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Sala, George Augustus, 1828-1895
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Alan Light - CC BY 2.0
Johnson, Don, 1950-
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Sheldon (Shelly) Levy - CC BY-SA 2.0
Alexander, Eric
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Thebogsideartists - CC BY-SA 3.0
Friel, Brian
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Paul Rotterdam - CC BY-SA 3.0
Rotterdam, Paul, 1939-....
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Keller, Marthe
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Billings, John S. (John Shaw), 1838-1913
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Allan warren - CC BY-SA 3.0
Howard, Trevor, 1916-1988
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Troedel, Charles, 1835-1906
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AgnosticPreachersKid - CC BY-SA 3.0
Folger Shakespeare Library
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Naylor, James, 1617?-1660
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Hölderlin, Friedrich, 1770-1843
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Louis Boilly - Public Domain
Boilly, Louis, 1761-1845
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George Washington University / Bureau of Animal Industry - Public Domain
De Schweinitz, E. A. (Emil Alexander), 1864-1904
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Lea-Kim - CC BY-SA 4.0
Tremblay, Michel, 1942-....
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Hénault, Charles-Jean-François, 1685-1770
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Worsley, Philip Stanhope, 1835-1866
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Gabrielli, Giuseppe, 1903-1987
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Brown Thurston - Public Domain
Thurston, Robert Henry, 1839-1903
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Pocketman38 - CC0 1.0
Mottin de La Balme, Augustin, 1733-1780
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Taylor, Jeremy, 1613-1667
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Christian Sigmund Pfann - Public Domain
Zumsteeg, Emilie, 1796-1857
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William Strang (1859-1921) - Public Domain
Trefusis, Violet, 1894-1972
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McKelvey, V. E. (Vincent Ellis), 1916-