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blackpast.org - Public Domain
* :File:John Collins Warren daguerreotype circa 1855.jpeg - Public Domain
Rigmor Dahl Delphin - CC BY-SA 4.0
Contemporary photograph - Public Domain
unknown - Public Domain
Naval Postgraduate School - Public Domain
Public Domain
W. and D. Downey - Public Domain
Mboix - CC BY-SA 4.0
Eva Rinaldi - CC BY-SA 2.0
Trelleek - Public Domain
Mpleahy - Public Domain
Bain News Service, publisher - Public Domain
Dabit100 - CC BY-SA 3.0
William S. Soule - Public Domain
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Dini, Ulisse, 1845-1918
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blackpast.org - Public Domain
Reed, George, 1939-
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Dunlop, Robert, 1960-2008
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Cherwell, Frederick Alexander Lindemann, Viscount, 1886-1957
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* :File:John Collins Warren daguerreotype circa 1855.jpeg - Public Domain
Warren, John Collins, 1778-1856
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Rigmor Dahl Delphin - CC BY-SA 4.0
Haugen, Per Theodor
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Contemporary photograph - Public Domain
Yorke, P. C. (Peter Christopher), 1864-1925
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Folkers, Karl August
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unknown - Public Domain
Hill, Billy, 1899-1940
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Naval Postgraduate School - Public Domain
Hayes-Roth, Frederick
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Colton, Walter, 1797-1851
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Public Domain
Alfange, Dean, 1897-1989
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Balfour, H. H. (Harold Harington), 1897-1988
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W. and D. Downey - Public Domain
Morley, Henry, 1822-1894
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Mboix - CC BY-SA 4.0
Pollock, Griselda
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Eva Rinaldi - CC BY-SA 2.0
Zambello, Francesca
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Abercromby, Robert, Sir, 1740-1827.
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Zocchi, Giuseppe, 1711-1767
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Stas, J.-S. (Jean Servais), 1813-1891
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Nostradamus, 1503-1566
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Trelleek - Public Domain
Fawkes, Guy, 1570-1606
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Mpleahy - Public Domain
Mouton, Alexander, 1804-1885
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Bain News Service, publisher - Public Domain
Rinehart, Mary Roberts, 1876-1958
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Dabit100 - CC BY-SA 3.0
Maldonado, Pedro (Pedro Vicente), 1704-1748
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Barber, Hiram, 1835-1924
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Blue, Rupert Lee, 1868-1948
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Page, John, 1744-1808
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Richepin, Jean, 1849-1926
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Moritz, Michael
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William S. Soule - Public Domain
Satank, Kiowa Chief, 1810-1871