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unknown - Public Domain
Anonymous, no author disclosure - Public Domain
Richard James Lane, published by Thomas McLean, after w:Francis Grant (artist) - Public Domain
Alan Light - CC BY 2.0
Elke Wetzig (Elya - CC BY-SA 3.0
Thomas Gibson - Public Domain
Carlo Pellegrini - Public Domain
United States Senate Historical Office - Public Domain
Juan Bernabé Palomino (1692-1777) - Public Domain
Robert Walter Weir - Public Domain
Al Aumuller, World Telegram staff photographer - Public Domain
August Brasch - Public Domain
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Challoner, Richard, 1691-1781
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unknown - Public Domain
Panciroli, Giovanni Giacomo
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Anonymous, no author disclosure - Public Domain
Dufy, Raoul, 1877-1953
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Richard James Lane, published by Thomas McLean, after w:Francis Grant (artist) - Public Domain
Nisbett, Louisa, 1812?-1858
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Greenleaf, Simon, 1783-1853
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Alan Light - CC BY 2.0
Woggon, Bill
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Elke Wetzig (Elya - CC BY-SA 3.0
Dürrenmatt, Friedrich
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Bohnen, Michael
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Thomas Gibson - Public Domain
Wager, Charles, Sir, 1666-1743
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Thomas, Llewellyn Hilleth.
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Mill, Harriet Hardy Taylor, 1807-1858
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Villeroi, Nicolas de Neufville, Seigneur de, 1542-1617
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unknown - Public Domain
Bayer, Joseph, 1852-1913
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unknown - Public Domain
Perry, Mr. (William Hayne), 1839-1902
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unknown - Public Domain
Hardin, M. D. (Martin D.), 1837-1923
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Laveleye, Émile de, 1822-1892
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Luís, de Granada, 1504-1588
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Carlo Pellegrini - Public Domain
Harrowby, Dudley Ryder, Earl of, 1831-1900
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Brant, Joseph, 1742-1807
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United States Senate Historical Office - Public Domain
Ewing, Tom, 1935-
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Juan Bernabé Palomino (1692-1777) - Public Domain
Feijóo, Benito Jerónimo (1676-1764).
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Noel, Roden, 1834-1894
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unknown - Public Domain
Rothman, Steven R. (Steven Richard), 1952-
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Ferebee, Dorothy Boulding, 1898?-1980
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Diller, Phyllis, 1917-2012
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Poggi, Giuseppe, 1811-1901
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Heavysege, Charles, 1816-1876
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Robert Walter Weir - Public Domain
Seymour, Truman, 1824-1891
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Al Aumuller, World Telegram staff photographer - Public Domain
Tamiris, Helen, 1905-1966
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August Brasch - Public Domain
Richter, E. F. (Ernst Friedrich), 1808-1879