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George Perfect Harding - Public Domain
John Downman - Public Domain
Harry Williams & Egbert Van Alstyne - Public Domain
Camille Silvy - Public Domain
"Photograph by Elliott & Fry" - Public Domain
Fritzw -
Daniel Wickemeyer - Public Domain
Public Domain
Not listed. - Public Domain
George Augustus Baker - Public Domain
George S Elrick - CC BY-SA 4.0
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Czekanowski, Jan, 1882-1965
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František, Josef, 1914-1940
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Dempster, George, 1732-1818
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George Perfect Harding - Public Domain
Berkeley, John, -1678
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Reuther, Walter, 1907-1970
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John Downman - Public Domain
Downman, John, 1750-1824
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Skovoroda, Hryhoriĭ Savych, 1722-1794
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Leidesdorff, William A. (William Alexander), 1810-1848
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Lauman, Jacob Gartner, 1813-1867
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Reavis, James Addison, 1843-1914
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Pollaiolo, Antonio, 1426?-1498
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Harry Williams & Egbert Van Alstyne - Public Domain
Van Alstyne, Egbert, 1882-1951
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Camille Silvy - Public Domain
Silvy, Camille-Léon-Louis, 1834-1910
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Ruppin, Arthur, 1876-1943
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"Photograph by Elliott & Fry" - Public Domain
Hofmeyr, Jan Hendrik, 1845-1909
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Santos, Máximo Benito, 1847-1889
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Collins, David, 1756-1810
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Fritzw -
Adams, J. B., 1954-
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Daniel Wickemeyer - Public Domain
Zeisel, Éva, 1906-2011
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Public Domain
Capponi, Gino, 1792-1876
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Not listed. - Public Domain
Baldwin, William Henry, 1863-1905
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Thomire, Pierre-Philippe, 1751-1843
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George Augustus Baker - Public Domain
Astor, William B. (William Backhouse), 1792-1875
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Public Domain
James, Charles T. (Charles Tillinghast), 1805-1862
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Public Domain
Hubmaier, Balthasar, -1528
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Riemann, Bernhard, 1826-1866
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George S Elrick - CC BY-SA 4.0
Elrick, George
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Morse, David A. (David Abner), 1907-
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Cowan, Clyde L.
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Corbett, Richard, 1955-