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Hans Georg Pfannmüller - CC BY-SA 3.0
author of photograph unknown - Public Domain
Helene C. Stikkel - Public Domain
Pierre-Auguste Renoir (1841-1919) - Public Domain
Rvalette - CC BY-SA 4.0
Unknown (published by Hall, Virtue, and Co, 1849) - Public Domain
Napoleon Sarony - Public Domain
Gabriela Kotik - CC BY-SA 3.0
Public Domain
U.S. Army Office of Public Affairs - Public Domain
Simon Bronner - Public Domain
w:Senate of the Republic (Italy) -
Gemaalexia - CC BY-SA 3.0
unknown - Public Domain
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Hans Georg Pfannmüller - CC BY-SA 3.0
Gulbransson, Olaf, 1873-1958
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Zwicky, F. (Fritz), 1898-1974
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Middleton, Troy H. (Troy Houston), 1889-1976
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Conrad, Pete, 1930-1999
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Adams, J. W. (Jewett William), 1835-1920
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author of photograph unknown - Public Domain
Bleuler, Eugen, 1857-1939
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Helene C. Stikkel - Public Domain
Robertson of Port Ellen, George, Lord, 1946-
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Pierre-Auguste Renoir (1841-1919) - Public Domain
Valtat, Louis, 1869-1952
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Rvalette - CC BY-SA 4.0
Zosimos, of Panopolis
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Unknown (published by Hall, Virtue, and Co, 1849) - Public Domain
Barton, Bernard, 1784-1849
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Napoleon Sarony - Public Domain
Parkhurst, C. H. (Charles Henry), 1842-1933
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Zhang, Xueliang, 1901-2001
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Herrick, Francis Hobart, 1858-1940
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Babkin, B. P. (Boris Petrovich), 1877-1950
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Morgan, Edwin, 1920-2010
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Joaquin, Nick
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Gabriela Kotik - CC BY-SA 3.0
Kotík, Jan Jakub, 1972-2007
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Wood, William B. (William Burke), 1779-1861
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Public Domain
Taylor, John, 1753-1824
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U.S. Army Office of Public Affairs - Public Domain
Williams, E. T. (Edward Thomas), 1901-1973
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Pelley, William Dudley, 1890-1965
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Simon Bronner - Public Domain
Bronner, Simon J.
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Glenn, John, 1921-2016
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w:Senate of the Republic (Italy) -
Monti, Mario, 1943-....
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Gemaalexia - CC BY-SA 3.0
Solt, Andrew.
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unknown - Public Domain
Kohn, Alfred
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Polar, Kelley
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Andreyev, Leonid, 1871-1919
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Popova, Li︠u︡bovʹ Sergeevna, 1889-1924
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Ford, Nicholas, 1833-1897