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unknown - Public Domain
Congressional Portrait Collection (Library of Congress). - Public Domain
PopCultureGeek.com - CC BY 2.0
Public Domain
Not stated - Public Domain
Giosinopoli - CC BY-SA 4.0
Annie Fromentin-Sangnier - CC BY-SA 3.0
w:fr:Eugène Pirou - Public Domain
Reshmi470 - CC BY-SA 4.0
unknown photographer - Public Domain
Georges Biard - CC BY-SA 3.0
Pieter Stevens van Gunst, after Adriaen van der Werff - CC BY-SA 3.0
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Shaw, James, 1815-1881
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unknown - Public Domain
Rusticucci, Girolamo
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Neroccio de' Landi, 1447-1500
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Lozoraitis, S. (Stasys), 1924-1994
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Congressional Portrait Collection (Library of Congress). - Public Domain
Derounian, Steven B. (Steven Boghos), 1918-2007
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PopCultureGeek.com - CC BY 2.0
Campbell, Martin
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Fitzgerald, John Francis, 1863-1950
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Public Domain
Larrínaga, Tulio, 1847-1917
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unknown - Public Domain
Rydz-Śmigły, Edward, 1886-1941
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Not stated - Public Domain
Gilbert, Lionel Arthur
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Giosinopoli - CC BY-SA 4.0
Sinopoli, Giuseppe
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Frere, Bartle, Sir, 1815-1884
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Burkett, E. J. (Elmer Jacob), 1867-1935
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Kabat, Elvin A. (Elvin Abraham), 1914-2000
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unknown - Public Domain
Yerkes, Robert Mearns, 1876-1956
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Annie Fromentin-Sangnier - CC BY-SA 3.0
Marc, Robert, 1943-1993
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w:fr:Eugène Pirou - Public Domain
Schmitt, Florent, 1870-1958
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Aynesworth, Allan, 1864-1959
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Reshmi470 - CC BY-SA 4.0
Flory, Paul J.
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unknown - Public Domain
Macleod, Norman, 1812-1872
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unknown photographer - Public Domain
Kelly, Luther S. (Luther Sage), 1849-1928
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Dickson, Alexander, Sir, 1777-1840
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Georges Biard - CC BY-SA 3.0
Hanin, Roger
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Heaphy, Charles, 1820-1881
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Herz, Henriette de Lemos, 1764-1847
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Pieter Stevens van Gunst, after Adriaen van der Werff - CC BY-SA 3.0
Casaubon, Méric, 1599-1671
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Jones, Samuel Milton, 1846-1904
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Tennent, Madge
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Brzezinski, Zbigniew, 1928-2017
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O'Hara, Barratt, 1882-1969