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Katka Kuniakova - Public Domain
Author Abinash Chandra Dna. In Wikimedia original uploader was Sray - Public Domain
unknown - Public Domain
unknown photographer - CC BY-SA 3.0
:en:A. M. W. Stirling - Public Domain
Basil Wolverton - Public Domain
anonymous -
unidentified staff artist/Stellar Publishing - Public Domain
Divot - CC BY-SA 4.0
Francisco Pacheco (1564-1644) - Public Domain
Dmitry Grigorievich Levitzky - Public Domain
original uploader -
Public Domain
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Walsh, James J. (James Joseph), 1865-1942
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Khrennikov, Tikhon, 1913-2007
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Katka Kuniakova - Public Domain
Kuniak, Juraj.
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Author Abinash Chandra Dna. In Wikimedia original uploader was Sray - Public Domain
Ramakrishna, 1836-1886
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Landi, Gaspare, 1756-1830
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Smith, William, 1769-1839
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unknown - Public Domain
Noble, Arthur, -1747
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Cranston, Alan, 1914-2000
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unknown photographer - CC BY-SA 3.0
Ording, Johannes, 1869-1929
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:en:A. M. W. Stirling - Public Domain
De Morgan, William, 1839-1917
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Basil Wolverton - Public Domain
Wolverton, Basil, -1978
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anonymous -
Skraup, Zdenko Hans
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unidentified staff artist/Stellar Publishing - Public Domain
Williamson, Jack, 1908-2006
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Divot - CC BY-SA 4.0
Golden, Peter B.
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McNeil, Claudia
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Selznick, David O., 1902-1965
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unknown - Public Domain
Wetz, Richard, 1875-1935
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Weidler, Virginia, 1926-1968
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Francisco Pacheco (1564-1644) - Public Domain
Cetina, Gutierre de, 1518?-1554?
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unknown - Public Domain
Gras, Enrico
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Grossman, Edith, 1936-....
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Dmitry Grigorievich Levitzky - Public Domain
Lopukhin, I. V. (Ivan Vladimirovich), 1756-1816
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Ligonier, John, 1680-1770
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Struve, Hermann, 1854-1920
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original uploader -
Bass, Hyman, 1932-....
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Formigé, Jean-Camille, 1845-1926
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Livingston, Ron
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Artigas, José Gervasio, 1764-1850
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Public Domain
Wilson, Henry Lane, 1857-1932
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Jackson, Henry, 1747-1809