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Unknown (published by Hall, Virtue, and Co, 1849) - Public Domain
U.S. Government - Public Domain
:de:Rudolf Dührkoop - Public Domain
United States Congress - Public Domain
Atelier Nadar - Public Domain
original uploader -
unknown - Public Domain
Samantha1961 - CC BY-SA 3.0
Harris & Ewing - Public Domain
Ogiyoshisan - Public Domain
Robert Scoble - CC BY 2.0
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Unknown (published by Hall, Virtue, and Co, 1849) - Public Domain
Barton, Bernard, 1784-1849
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Brown, Charles Brockden, 1771-1810
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Harrington, Charles Stanhope, Earl of, 1753-1829
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U.S. Government - Public Domain
Day, George E.
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:de:Rudolf Dührkoop - Public Domain
Kekulé, Reinhard, 1839-1911
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Roland, Philippe-Laurent, 1746-1816
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Oliphant, Laurence, 1829-1888
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Thompson, P. B. (Philip Burton), 1845-1909
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Royer-Collard, Pierre-Paul, 1763-1845
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United States Congress - Public Domain
Garcia, Sylvia, 1950-
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Aulie, Reidar, 1904-1977
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Atelier Nadar - Public Domain
Gondinet, Edmond, 1828-1888
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Jacobus, de Voragine, approximately 1229-1298
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Peter I, Emperor of Russia, 1672-1725
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Hamilton, William, 1704-1754
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Holt, Thomas, Sir, 1570 or 1571-1654
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Abert, J. W. (James William), 1820-1897
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unknown - Public Domain
Joy, James F. (James Frederick), 1810-1896
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Golovin, N. N. (Nikolaĭ Nikolaevich), 1875-1944
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Samantha1961 - CC BY-SA 3.0
Blakey, G. Robert (George Robert), 1936-
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Fomin, Ivan Aleksandrovich, 1872-1936
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Moore, J. Hampton (Joseph Hampton), 1864-1950
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Stringer, Arthur, 1874-1950
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Lampton, David M.
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Harris & Ewing - Public Domain
Whitlock, Brand, 1869-1934
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Talbot, George
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Ogiyoshisan - Public Domain
Warner, Langdon, 1881-1955
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unknown - Public Domain
Cowper, Spencer, 1713-1774
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unknown - Public Domain
Cook, Frederick Albert, 1865-1940
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Robert Scoble - CC BY 2.0
Siegel, Alan M. (Alan Michael), 1938-