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Klein & Guttenstein - Public Domain
Isaac Shokal - CC BY-SA 4.0
unknown - Public Domain
Public Domain
Garo (photographer) - Public Domain
LBJ Library - CC BY 2.0
GeoffreyMason - CC BY 3.0
Georges Devred (1887-1932) - Public Domain
US gov - Public Domain
Smokeonthewater - CC BY-SA 4.0
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Klein & Guttenstein - Public Domain
McWade, Robert, 1872-1938
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Fabricius, ab Aquapendente, approximately 1533-1619
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Abs, Hermann Josef
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Gerbert, Martin, 1720-1793
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Isaac Shokal - CC BY-SA 4.0
Semel, Nava
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unknown - Public Domain
Horgan, Stephen H. (Stephen Henry), 1854-1941
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unknown - Public Domain
Morgan, Lewis Henry, 1818-1881
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Public Domain
Grimm, Jacob, 1785-1863
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Thompson, Fred, 1942 August 19-
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May, Andrew Jackson, 1875-1959
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Garo (photographer) - Public Domain
Scotti, Antonio, 1866-1936
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Cleve, P. T. (Per Teodor), 1840-1905
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Thompson, Butch
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LBJ Library - CC BY 2.0
Edwards, Harry, 1942-....
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Israëls, Jozef, 1824-1911
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Bronck, Jonas, approximately 1600-1643
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GeoffreyMason - CC BY 3.0
Kim, Derek Kirk
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Barnes, William, 1801-1886
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Wigforss, Ernst, 1881-1977
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Hamilton, Edward L. (Edward La Rue), 1857-1923
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Hunt, Leigh, 1784-1859
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Public Domain
Howard, Benjamin, 1760-1814
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Harter, Michael D. (Michael Daniel), 1846-1896
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Draper, Henry, 1837-1882
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Dupin, Charles, baron, 1784-1873
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Wheeler, Charles, 1892-1974
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Georges Devred (1887-1932) - Public Domain
Flandin, Pierre-Étienne, 1889-1958
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Herbert, Thomas, Sir, 1606-1682
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US gov - Public Domain
Thurman, Karen L. (Karen Loveland), 1951-
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Smokeonthewater - CC BY-SA 4.0
Hunt, Helen, 1963-...