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NASA - Public Domain
Federico Milanés - Public Domain
Gage Skidmore - CC BY-SA 3.0
United States Steel Corporation - Public Domain
Jorge ga - CC BY-SA 4.0
Public Domain
unknown - Public Domain
James McLaughlin - Public Domain
Emile Wauters (1846-1933) - Public Domain
Unidentified photographer. - Public Domain
Photographer unknown. Photo from autobiography published in 1912 - Public Domain
ABC Television - Public Domain
Congressional bioguide - Public Domain
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Porter, Anna Maria, 1778-1832
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Stanley, Henrietta Maria Stanley, Baroness, 1807-1895
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NASA - Public Domain
Reilly, James F., II, 1954-
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Federico Milanés - Public Domain
Milanés, José Jacinto (1814-1863).
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Brunton, Anne, 1768-1808
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Gage Skidmore - CC BY-SA 3.0
Burton, Tim, 1958-....
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United States Steel Corporation - Public Domain
Meadows, Audrey
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Contades, Louis-Georges-Erasme, marquis de, 1704-1795
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Price, Kate, 1872-1943
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Morgan, John Hunt, 1825-1864
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Fysh, Wilmot Hudson, Sir
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Walckenaer, C.A. (Charles Athanase), 1771-1852
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Blasdel, Henry Goode, 1825-1900
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Jorge ga - CC BY-SA 4.0
Castells, Manuel, 1942-....
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Berrien, John MacPherson, 1781-1856
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Public Domain
Dal Pozzo, Cassiano, 1588-1657
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unknown - Public Domain
De Gubernatis, Angelo, 1840-1913
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Voigt, Edward, 1873-1934
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James McLaughlin - Public Domain
McLaughlin, James, 1842-1923
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Emile Wauters (1846-1933) - Public Domain
Goes, Hugo van der, 1435?-1482
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unknown - Public Domain
Cowen, Frederic H.
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Unidentified photographer. - Public Domain
Miller, Kenneth Hayes, 1876-1952
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Hauser, Erich, 1930-2004
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Photographer unknown. Photo from autobiography published in 1912 - Public Domain
Grenfell, Wilfred Thomason, Sir, 1865-1940
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Henry, Charles L. (Charles Lewis), 1849-1927
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Mariani, Angelo, 1838-1914
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ABC Television - Public Domain
Thorson, Linda, 1947-
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Vintimille du Luc, Charles-Gaspard-Guillaume de 1655-1746
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Partridge, George, 1740-1828
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Congressional bioguide - Public Domain
Bellmon, Henry