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Eddy Westveer, Permission granted by E-mail - CC BY-SA 2.0
unknown - Public Domain
Jean-François Portaels - Public Domain
Falk (949 Broadway, N. Y.) - Public Domain
Jarekt - CC BY-SA 3.0
US Government Printing Office - Public Domain
Pach - Public Domain
Gage Skidmore - CC BY-SA 3.0
Nickm57 - CC BY-SA 4.0
Mathew Brady - Public Domain
R. Wernicke - Public Domain
רנדום - CC BY-SA 3.0
Agave87 - CC BY-SA 3.0
LOC; Perine, George Edward, 1837-1885 - Public Domain
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Eddy Westveer, Permission granted by E-mail - CC BY-SA 2.0
Hargrove, Roy
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Lorde, André de, 1871-1942
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Storks, Henry Knight 1811-1874
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Sun, Yat-sen, 1866-1925
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Schopper, Herwig F.
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Affleck, Ben, 1972-....
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unknown - Public Domain
Allenby, Edmund Henry Hynman Allenby, Viscount, 1861-1936
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Jean-François Portaels - Public Domain
Déroulède, Paul, 1846-1914
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Falk (949 Broadway, N. Y.) - Public Domain
Pixley, Annie, 1858-1893
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Jarekt - CC BY-SA 3.0
Merten, Alan G.
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US Government Printing Office - Public Domain
Jennings, W. Pat (William Pat), 1919-1994
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Pach - Public Domain
Page, Curtis Hidden, 1870-1946
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Liepmann, Hugo, 1863-1925
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Schweizer, Jakob Otto 1863-1955
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Gage Skidmore - CC BY-SA 3.0
Pill, Alison, 1985-
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Demoustier, Charles-Albert, 1760-1807
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Robert de Vaugondy, Gilles, 1688-1766
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Nickm57 - CC BY-SA 4.0
Cain, John, 1931-
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US Government Printing Office - Public Domain
Perkins, Carl C. 1954-
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Mathew Brady - Public Domain
Meredith, Solomon, 1810-1875
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Hirsch, Emile, 1985-....
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R. Wernicke - Public Domain
Berger, Wilhelm, 1861-1911
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Peurbach, Georg von, 1423-1461
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Gutiérrez, Eduardo (1851-1889).
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רנדום - CC BY-SA 3.0
Banai, Ehud
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Mathew Brady - Public Domain
Donnan, William G., 1834-1908
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Agave87 - CC BY-SA 3.0
Das, Sajal K.
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Teresa, of Avila, Saint, 1515-1582
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Pelham, George, 1766-1827
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LOC; Perine, George Edward, 1837-1885 - Public Domain
Barnes, Albert, 1798-1870