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Andiemusik1986 - CC BY-SA 3.0
Biographical Dictionary and Portrait Gallery of Representative Men of Chicago, Milwaukee the World's Colombian Exposition - Public Domain
unknown - Public Domain
Ettinger Company for the television program ''Climax!'' - Public Domain
Artist unidentified. - Public Domain
Theodore C. Marceau - Public Domain
Illinois State Historical Library - Public Domain
Malfattio - CC BY-SA 4.0
Hartley Webster - Public Domain
G. Koopmans (Phillip Hillion: "I give you the permission because they are public. Only condition, no trade.") - CC BY-SA 3.0
author - Public Domain
Roferbia - CC BY-SA 4.0
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Čech, Eduard, 1893-1960
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Andiemusik1986 - CC BY-SA 3.0
Ciani, Suzanne
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Biographical Dictionary and Portrait Gallery of Representative Men of Chicago, Milwaukee the World's Colombian Exposition - Public Domain
Jones, Joseph Russell, 1823-1909
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Lear, Edward, 1812-1888
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unknown - Public Domain
Denina, Carlo, 1731-1813
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Edwards, Edward, 1738-1806
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Ettinger Company for the television program ''Climax!'' - Public Domain
Kerr, John, 1931-2013
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Artist unidentified. - Public Domain
Peattie, Elia Wilkinson, 1862-1935
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Henderson, James Pinckney, 1808-1858
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Theodore C. Marceau - Public Domain
Keen, William W. (William Williams), 1837-1932
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unknown - Public Domain
Zundel, John, 1815-1882
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Ring, John, 1752-1821
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Eigenmann, Carl H., 1863-1927
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Illinois State Historical Library - Public Domain
Hatch, O. M. (Ozias Mather), 1814-1893
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Malfattio - CC BY-SA 4.0
Fennell, James, 1766-1816
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Taber, I. W. (Isaiah West), 1830-1912
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Rigaud, André 1761-1811
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Hartley Webster - Public Domain
Von Tempsky, G. F. (Gustavus Ferdinand), 1828-1868
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Singer, Lori, 1962-
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Zimmerman, J. (Joseph), 1785-1853
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G. Koopmans (Phillip Hillion: "I give you the permission because they are public. Only condition, no trade.") - CC BY-SA 3.0
Prigogine, I. (Ilya)
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Walthall, Henry B. (Henry Brazeale), 1878-1936.
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Kennedy, A. L.
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Tournefort, Joseph Pitton de 1656-1708
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author - Public Domain
Thomas, Stephen, 1809-1903
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Roferbia - CC BY-SA 4.0
Wolff, Egon, 1926-....
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Coleman, Charles Caryl, 1840-1928
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Lind, Don L., 1930-
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Cutler, John C. (John Christopher), 1846-1928
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Toon, Malcolm, 1916-2009