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unknown - Public Domain
Slowking4 -
MichaelNetzer - CC BY-SA 3.0
Verhoeff, Bert / Anefo -
Kunstverlag Louis Pernitzsch, Leipzig - Public Domain
Photographer-Martha Swope, New York - Public Domain
Artist: Samuel Johnson Woolf (1880-1948). Time magazine. - Public Domain
Tirin -
Idobi - CC BY-SA 3.0
Audrey C. Tiernan - CC BY 1.0
David Shankbone - CC BY 3.0
Public Domain
Jacob G. Ullery - Public Domain
Benjamin Falk - Public Domain
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unknown - Public Domain
Terrot, Charles Hughes, 1790-1872.
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Slowking4 -
Wright, Charles, 1935-....
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MichaelNetzer - CC BY-SA 3.0
Hudnall, James D.
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James, Thomas L. (Thomas Lemuel), 1831-1916
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Desfontaines, René Louiche, 1750-1833
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Brown, Clarence J., 1927-
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Waldheim, Kurt
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Verhoeff, Bert / Anefo -
Breuker, Willem, 1944-2010
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Kunstverlag Louis Pernitzsch, Leipzig - Public Domain
Brugmann, Karl, 1849-1919
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Photographer-Martha Swope, New York - Public Domain
McArdle, Andrea
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Castro, Raúl H. (Raúl Héctor), 1916-2015
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Artist: Samuel Johnson Woolf (1880-1948). Time magazine. - Public Domain
Coffin, Henry Sloane, 1877-1954
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Vandenberg, Hoyt Sanford, 1899-1954
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Brady, Sarah, 1942-
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Tirin -
Sievers, Wolfgang, 1913-
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Ziegfeld, Patricia, 1916-2008
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Idobi - CC BY-SA 3.0
Lorberbaum, Menachem, 1958-
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Ridge, John Rollin, 1827-1867.
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Audrey C. Tiernan - CC BY 1.0
Nasaw, David.
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David Shankbone - CC BY 3.0
Martin, Darnell
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Public Domain
Mead, George Herbert, 1863-1931
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Marshall, George C. (George Catlett), 1880-1959
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Coques, Gonzales, 1614-1684
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Reich, Robert B.
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Jacob G. Ullery - Public Domain
Barlow, Bradley, 1814-1889
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Barraud, Francis, 1856-1924
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Thornton, Matthew, 1714-1803
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Public Domain
Whitworth, Charles Whitworth, Baron, 1675-1725
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Fiesinger, William Louis, 1877-1953
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Benjamin Falk - Public Domain
Jansen, Marie, 1857-1914