Image from Wikimedia Commons
Artist unidentified. - Public Domain
Władysław Podkowiński - Public Domain
"The Philadelphia Times" (Philadelphia, PA). - Public Domain
United States Navy photograph - Public Domain
Український інститут національної пам'яті - CC BY-SA 3.0
Contemporary photograph - Public Domain
unknown - Public Domain
Public Domain
Christian Michelides -
Victor Talking Machine Company - Public Domain
Scanpix - Public Domain
Pip R. Lagenta - CC BY 2.0
Ann Thomas, Department of State - Public Domain
Photographer unknown (possible self-portrait by Grove) - Public Domain
TimDuncan - CC BY-SA 3.0
Image from Wikimedia Commons
Artist unidentified. - Public Domain
Peattie, Elia Wilkinson, 1862-1935
Image from Wikimedia Commons
Redwood, Francis, 1839-1935
Image from Wikimedia Commons
Władysław Podkowiński - Public Domain
Wróblewski, Zygmunt Florenty (1845-1888).
Image from Wikimedia Commons
Scheffer, Ary, 1795-1858
Image from Wikimedia Commons
Bingaman, Jeff
Image from Wikimedia Commons
Khotkevych, Hnat, 1877-1938
Image from Wikimedia Commons
"The Philadelphia Times" (Philadelphia, PA). - Public Domain
Green, H. D. (Henry Dickinson), 1857-1929
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Johan Maurits, Prince of Nassau-Siegen, 1604-1679
Image from Wikimedia Commons
Rosenboom, Thomas, 1956-....
Image from Wikimedia Commons
United States Navy photograph - Public Domain
Ingersoll, Stuart H. (Stuart Howe), 1898-1983
Image from Wikimedia Commons
Український інститут національної пам'яті - CC BY-SA 3.0
Kravchenko, Victor, 1905-1966
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Torres-García, Joaquín, 1874-1949
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Contemporary photograph - Public Domain
Otto, Rudolf, 1869-1937
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unknown - Public Domain
Dubois, Paul, 1848-1918
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Public Domain
Appleton, Nathan, 1779-1861
Image from Wikimedia Commons
Christian Michelides -
Dohnányi, Christoph von
Image from Wikimedia Commons
Victor Talking Machine Company - Public Domain
Carter, Sara, 1898-1979
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unknown - Public Domain
Carpenter, Cyrus Clay, 1829-1898
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Limerick, Thomas Dongan, Earl of, 1634-1715
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Shemi︠a︡kin, Mikhail, 1943-
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Back, George, Sir, 1796-1878
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Halas, George, 1895-1983
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Scanpix - Public Domain
Babs, Alice
Image from Wikimedia Commons
Jackson, Rachel, 1767-1828
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Pip R. Lagenta - CC BY 2.0
Ellison, Harlan
Image from Wikimedia Commons
Ann Thomas, Department of State - Public Domain
Lewis, Samuel W. (Samuel Winfield), 1930-2014
Image from Wikimedia Commons
Photographer unknown (possible self-portrait by Grove) - Public Domain
Grove, Frederick Philip, 1879-1948
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TimDuncan - CC BY-SA 3.0
Smith, Ali, 1962-....
Image from Wikimedia Commons
Johnson, Robert Ward, 1814-1879
Image from Wikimedia Commons
unknown - Public Domain
Saegmuller, George N. (George Nicholas), 1847-1934