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Elliott & Fry - Public Domain
Karl's friend Barry Iddon, Variety Club of Great Britain - CC BY 3.0
Tduk - CC BY-SA 4.0
J. T. White Company - Public Domain
unknown - Public Domain
Public Domain
Congressional Portrait Collection (Library of Congress). - Public Domain
Original uploader was Odysses - CC BY-SA 3.0
Photographer unknown. The photo was published in E. A. Nash, A History of the Forty-Fourth Regiment, in 1910 (Chicago: RR Donnelley and Sons). - Public Domain
US Government Printing Office - Public Domain
Albert Weisgerber - Public Domain
Ben Merk / Anefo - CC BY-SA 3.0
Duncan.Hull - CC BY-SA 4.0
Mathew Brady - Public Domain
Smallbones - Public Domain
NASA - Public Domain
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Rendell, Ruth, 1930-....
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Elliott & Fry - Public Domain
Robertson, W. R. (William Robert), 1860-1933
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Karl's friend Barry Iddon, Variety Club of Great Britain - CC BY 3.0
Malden, Karl
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Autran, Joseph Antoine, 1813-1877
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Tduk - CC BY-SA 4.0
Barr, Mick
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Cranogwen, 1839-1916
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Allen, Grant, 1848-1899
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J. T. White Company - Public Domain
Kalbfleisch, Martin, 1804-1873
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Obey, David R.
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unknown - Public Domain
Gergonne, Joseph-Diez, 1771-1859
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Decoin, Henri, 1890-1969
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Public Domain
Charles V, Duke of Lorraine, 1643-1690
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Congressional Portrait Collection (Library of Congress). - Public Domain
Derounian, Steven B. (Steven Boghos), 1918-2007
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Brigstocke, Thomas 1809-1881
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Original uploader was Odysses - CC BY-SA 3.0
Democritus, approximately 460 B.C.-approximately 370 B.C.
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Photographer unknown. The photo was published in E. A. Nash, A History of the Forty-Fourth Regiment, in 1910 (Chicago: RR Donnelley and Sons). - Public Domain
Sprague, Charles E. (Charles Ezra), 1842-1912
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Lathrop, George Parsons, 1851-1898
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US Government Printing Office - Public Domain
McSpadden, Clem, 1925-2008
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Albert Weisgerber - Public Domain
Levy, Rudolf, 1875-1944
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Ben Merk / Anefo - CC BY-SA 3.0
Leymarie, Jean.
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Duncan.Hull - CC BY-SA 4.0
Paulson, Lawrence C.
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Aceves Navarro, Gilberto, 1931-
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Derwentwater, James Radcliffe, Earl of, 1689-1716
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Mathew Brady - Public Domain
Strong, James, 1822-1894
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Smallbones - Public Domain
Congregation Rodeph Shalom (Philadelphia, Pa.)
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Grosvenor, R. (Robert), Lord, 1801-1893
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Gronseth, Erik
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Fantin-Latour, Henri, 1836-1904
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Public Domain
Abarca, Joachim 1778-1844
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NASA - Public Domain
Young, John, 1930-2018