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Anonymous - Public Domain
Veronica Ruiz de Velasco - Public Domain
unknown - Public Domain
William Stainton Moses - Public Domain
Keith Allison - CC BY-SA 2.0
attributed to Sir Anthony Coningham Sterling 1805-1871 - Public Domain
Metro-Goldwyn-Mayer - Public Domain
Georges Biard - CC BY-SA 3.0
Public Domain
Baszoetekouw - Public Domain
Not identified - Public Domain
United States Department of Agriculture -
Thomas Peter Schulz - CC BY-SA 3.0
w:Hakob Hovnatanyan - Public Domain
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Anonymous - Public Domain
Mitford, Unity, 1914-1948
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Laveleye, Émile de, 1822-1892
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Veronica Ruiz de Velasco - Public Domain
Ruiz De Velasco, Veronica
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unknown - Public Domain
McCay, Winsor
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William Stainton Moses - Public Domain
Moses, Stainton
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Keith Allison - CC BY-SA 2.0
McCoy, Colt
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Claesz, Aert 1498-1564
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Hamilton, William, Sir, 1788-1856
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Wirth, Timothy E., 1939-
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attributed to Sir Anthony Coningham Sterling 1805-1871 - Public Domain
Laurence, Samuel, 1812-1884
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Couse, E. Irving (Eanger Irving), 1866-1936
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Metro-Goldwyn-Mayer - Public Domain
Brown, Johnny Mack
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Georges Biard - CC BY-SA 3.0
Martin, Jacques, 1933-2007
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Hawkins, Rush Christopher, 1831-1920
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Public Domain
Allen, William, 1770-1843
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Wilbraham, Roger, 1553-1616
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Hale, Frederick, 1874-1963
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Baszoetekouw - Public Domain
Minnaert, M. G. J. (Marcel Gilles Jozef), 1893-1970
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unknown - Public Domain
Garvin, Michael J., 1861-1918
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Not identified - Public Domain
Drinkwater, John, 1762-1844
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Bond, Christopher S.
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United States Department of Agriculture -
Sherrod, Shirley, 1948-
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Thomas Peter Schulz - CC BY-SA 3.0
Petit, Roland, 1924-2011
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Hubbard, Louisa M., 1836-1906
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Wilson, H.H. (Horace Hayman), 1786-1860
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Witherspoon, Jimmy
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Bentham, George, 1800-1884
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w:Hakob Hovnatanyan - Public Domain
ʻAlī ibn Abī Ṭālib, Caliph, approximately 600-661
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Still, A. T. (Andrew Taylor), 1828-1917
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Walker, Francis Amasa, 1840-1897