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unknown photographer - Public Domain
unknown - Public Domain
Scott Ableman - CC BY 2.0
Contemporary portrait - Public Domain
Roddy17 - CC BY-SA 3.0
Poindexter Page Carter - Public Domain
anonymous - Public Domain
Mathew Brady Levin Corot Handy - Public Domain
Evans, W., Smith, I. R. - Public Domain
unknown, copyright expired, pre 1919 - Public Domain
Book by Charles James Cullingworth, engraving by W. Ward (1809) after a portrait by J. Allen - Public Domain
Antarctic96 - CC BY-SA 3.0
Warner Brothers Studio - Public Domain
Uncredited - Public Domain
Luca Giarelli - CC BY-SA 3.0
Marina Real Española (Spanish Royal Navy) -
Notyourbroom - CC BY 3.0
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unknown photographer - Public Domain
Knipe, Alden Arthur, 1870-1950
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Smith, Samuel Stanhope, 1750-1819
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Peters, Wilhelm C. H. (Wilhelm C. Hartwig), 1815-1883
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unknown - Public Domain
Körner, Gustav Philipp, 1809-1896
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Scott Ableman - CC BY 2.0
Will, George F.
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Contemporary portrait - Public Domain
Rashdall, Hastings, 1858-1924
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Roddy17 - CC BY-SA 3.0
O'Connor, Roderic Ladew, 1921-1982
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Kara Mustafa Paşa, Merzifonlu, 1634-1683
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Poindexter Page Carter - Public Domain
Burks, E. C. (Edward Calohill), 1821-1897
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anonymous - Public Domain
Novák, Vítězslav
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Sims, James, 1741-1820
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unknown - Public Domain
Herbert, Robert, Sir, 1831-1905
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Mathew Brady Levin Corot Handy - Public Domain
Warner, Hiram, 1802-1881
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Lorenzana, Francisco Antonio, 1722-1804
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Sonnenschein, Hugo, 1889-1953
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Burke, Richard, 1758-1794
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Evans, W., Smith, I. R. - Public Domain
Hamilton, William Gerard, 1729-1796
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unknown, copyright expired, pre 1919 - Public Domain
Steele, Samuel B. (Samuel Benfield), 1848-1919
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Bryant, Farris, 1914-2002
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Atkinson, Rowan
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Sherman, Roger, 1721-1793
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Book by Charles James Cullingworth, engraving by W. Ward (1809) after a portrait by J. Allen - Public Domain
White, Charles, 1728-1813
Image from Wikimedia Commons
Antarctic96 - CC BY-SA 3.0
Guerin, John
Image from Wikimedia Commons
Warner Brothers Studio - Public Domain
Egan, Richard, 1921-1987
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Uncredited - Public Domain
Cowles, Henry Chandler, 1869-1939
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Luca Giarelli - CC BY-SA 3.0
Cavalli-Sforza, L.L. (Luigi Luca), 1922-
Image from Wikimedia Commons
Marina Real Española (Spanish Royal Navy) -
Martínez, Esteban José, 1742-1798
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Rutherford, Samuel, 1600?-1661
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Shelby, Joseph Orville, 1830-1897
Image from Wikimedia Commons
Notyourbroom - CC BY 3.0
Cianci, Vincent Albert, 1941-