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Erling Mandelmann - CC BY-SA 3.0
Adolphe Cohen - Public Domain
Thomas Lawrence -
Moumou82 - Public Domain
Sharon L. Palmer - CC BY-SA 3.0
unknown - Public Domain
James Stanislaus Easby-Smith - Public Domain
U.S. federal government - Public Domain
Sir Joshua Reynolds - Public Domain
Horatio Nelson King - Public Domain
Desponds - CC BY-SA 3.0
Office of Congresswoman Liz Cheney -
Forest Service, USDA - CC BY 2.0
"The Magazine of Western History". - Public Domain
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Erling Mandelmann - CC BY-SA 3.0
Beineix, Jean-Jacques
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Adolphe Cohen - Public Domain
Haan, D. Bierens de (David Bierens), 1822-1895
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Thomas Lawrence -
Blessington, Charles John Gardiner, Earl of, 1782-1829
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Moumou82 - Public Domain
Diday, François 1802-1877
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Borsuk, Karol
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Sharon L. Palmer - CC BY-SA 3.0
Palmer, Parker J.
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Graves, Robert, 1895-1985
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Ryland, John, 1753-1825
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unknown - Public Domain
Bosse, Harriet, 1878-1961
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James Stanislaus Easby-Smith - Public Domain
Stafford, Wendell Phillips, 1861-
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Leake, William Martin, 1777-1860
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U.S. federal government - Public Domain
Bumbry, Grace, 1937-....
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Morton, Thomas, 1564-1659
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Spohr, Louis, 1784-1859
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Bell, Digby, 1849-1917
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Sir Joshua Reynolds - Public Domain
Hely-Hutchinson, John, 1724-1794
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Liggett, Walter W. (Walter William), 1886-1935
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Horatio Nelson King - Public Domain
Lyell, Mary Horner, 1808-1873
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unknown - Public Domain
Wiklund, Adolf, 1879-1950
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Desponds - CC BY-SA 3.0
Reichel, Bernard
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August, Duke of Braunschweig-Lüneburg, 1579-1666
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Holt, Joseph, 1807-1894
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Brearley, Norman, Sir, 1890-1989
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Spivak, Charlie
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Galvani, Luigi, 1737-1798
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Park, John Edgar, 1972-
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Office of Congresswoman Liz Cheney -
Cheney, Liz, 1966-
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Forest Service, USDA - CC BY 2.0
Bradley, Nina Leopold, 1917-
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"The Magazine of Western History". - Public Domain
Wells, Daniel, 1808-1902
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Rioja, Francisco de 1583-1659