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Unidentified (Ensian published by University of Michigan) - Public Domain
US Government Printing Office - Public Domain
Portrait by Joshua Horner - Public Domain
unknown - Public Domain
Bill Morgan - CC BY-SA 2.0
original uploader - Public Domain
Allan warren - CC BY-SA 3.0
Unknown, distributed by PBS - Public Domain
Acme Newspictures - Public Domain
Al Chang - Public Domain
Photographer unidentified - Public Domain
unknown - CC BY-SA 3.0
Viardot/Formentin - Public Domain
David Shankbone - CC BY-SA 3.0
Nv8200p - CC BY-SA 3.0
Trödel - CC BY-SA 3.0
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Unidentified (Ensian published by University of Michigan) - Public Domain
Piaget, Jean, 1896-1980
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US Government Printing Office - Public Domain
Perkins, Carl C. 1954-
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Portrait by Joshua Horner - Public Domain
Lister, Anne, 1791-1840
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unknown - Public Domain
Fenn, George Manville, 1831-1909
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unknown - Public Domain
Plummer, Mary Wright, 1856-1916
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Bill Morgan - CC BY-SA 2.0
Whitfield, Mark
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Villiers, Charles Pelham, 1802-1898
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Cotta, Heinrich, 1763-1844
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Luisetti, Hank
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Bunker, Chang, 1811-1874
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original uploader - Public Domain
Newlands, John A. R.
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Pole, William, Sir, 1561-1635
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Allan warren - CC BY-SA 3.0
Kerr, Deborah, 1921-2007
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Unknown, distributed by PBS - Public Domain
Pears, Peter, 1910-1986
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Acme Newspictures - Public Domain
Hughes, Howard, 1905-1976
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Falkenhausen, Ludwig, Freiherr von, 1844-
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Al Chang - Public Domain
Millett, Lewis L. (Lewis Lee), 1920-2009
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Becker, August, 1828-1891
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Photographer unidentified - Public Domain
Shouse, Catherine Filene, 1896-1994
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Hagedorn, Jessica Tarahata, 1949-....
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unknown - Public Domain
Hamon, Augustin Frédéric, 1862-1945
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unknown - Public Domain
King, Daniel P. (Daniel Putnam), 1801-1850
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Napier, Mark, 1798-1879
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Bouchard, Lucien
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unknown - CC BY-SA 3.0
Wataghin, Gleb, 1899-1986
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Viardot/Formentin - Public Domain
Weber, Gottfried, 1779-1839
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David Shankbone - CC BY-SA 3.0
Phillips, Carl, 1959-
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Nv8200p - CC BY-SA 3.0
Horenstein, Henry
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Trödel - CC BY-SA 3.0
Hinckley, Gordon Bitner, 1910-2008
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Stramm, August, 1874-1915