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Robert Allen - CC0 1.0
original uploader - Public Domain
United States Government - Public Domain
unknown - Public Domain
photographer not credited - Public Domain
Anders Beer Wilse - Public Domain
Contemporary portrait - Public Domain
Moshe Pridan - Public Domain
Alessio Trerotoli - CC BY-SA 3.0
Burr William McIntosh and Clark Hobart - Public Domain
George Grantham Bain Collection (Library of Congress) - Public Domain
Saddhiyama - Public Domain
John Thomas (1838-1905) circa 1885 - CC BY-SA 2.0
''':de:Ludwig Schwab (Fotograf) -
Gentile, Chicago - Public Domain
Alexander Williamson - CC BY 2.0
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Cramer, John, Sir, 1896-
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Murfin, Jane, 1892-1955
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Robert Allen - CC0 1.0
Ford, Walton, 1960-....
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original uploader - Public Domain
Lualdi, Adriano, 1885-1971
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United States Government - Public Domain
Christenberry, Herbert William, 1897-1975
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unknown - Public Domain
Méry, Joseph, 1797-1865
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photographer not credited - Public Domain
Stuart, Henry Carter, 1855-1933
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Anders Beer Wilse - Public Domain
Krog, Helge, 1889-1962
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Contemporary portrait - Public Domain
Watson, Richard, 1737-1816
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Mendenhall, Walter C. (Walter Curran), 1871-1957
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Bellotto, Bernardo, 1721-1780
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Moshe Pridan - Public Domain
Williams, G. Mennen, 1911-1988
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Alessio Trerotoli - CC BY-SA 3.0
Davi, Robert
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Prigov, D.
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Burr William McIntosh and Clark Hobart - Public Domain
Matthison, Edith Wynne, 1875-1955
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George Grantham Bain Collection (Library of Congress) - Public Domain
Sackville, Margaret, 1881-1963
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Volstead, Andrew J. (Andrew John), 1860-1947
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Bowditch, Henry I. (Henry Ingersoll), 1808-1892
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Saddhiyama - Public Domain
Baggesen, Jens, 1764-1826
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Savitt, Jan
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Venable, Evelyn, 1913-1993
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Turnbull, Andrew, 1945-
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John Thomas (1838-1905) circa 1885 - CC BY-SA 2.0
Morris-Jones, John, 1864-1929
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Münsterberg, Hugo, 1863-1916
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''':de:Ludwig Schwab (Fotograf) -
Strnad, Oskar, 1879-1935
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Furchgott, Robert F., 1916-2009
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Marsilius, of Inghen, -1396
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Ricci, Luigi, 1805-1859
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Gentile, Chicago - Public Domain
Clark, John B. (John Bullock), 1802-1885
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Alexander Williamson - CC BY 2.0
Armitage, Simon, 1963-....