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Leafar - CC BY-SA 3.0
Public Domain
original uploader - Public Domain
J543845 U.S. Copyright Office. Copyright by Harris & Ewing. - Public Domain
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GFHund - CC BY 3.0
LBJ Library - CC BY 2.0
unknown - Public Domain
Frederick Calvin Norton - Public Domain
William Owen (1769-1825) - Public Domain
Ministry of Supply - Public Domain
C. M. Stieglitz - Public Domain
Scott Schram - CC BY 2.0
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Leafar - CC BY-SA 3.0
Bausch, Pina
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Landis, Carole, 1919-1948
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Public Domain
Alfange, Dean, 1897-1989
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original uploader - Public Domain
Andrews, Roy Chapman, 1884-1960
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Cahill, Thaddeus, 1867-1934
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J543845 U.S. Copyright Office. Copyright by Harris & Ewing. - Public Domain
Colby, Bainbridge, 1869-1950
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Benedetto, da Maiano, 1442-1497
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Apesos, Anthony, 1953-
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Crusell, Bernhard Henrik, 1775-1838
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Ibsen, Sigurd, 1859-1930
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Stosch, Philipp von, Baron, 1691-1757
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Bly, Nellie, 1864-1922
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GFHund - CC BY 3.0
Møller, C. (Christian), 1904-1980
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LBJ Library - CC BY 2.0
Wills, Garry, 1934-....
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unknown - Public Domain
Remondino, P. C. (Peter Charles), 1846-1926
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Worsaae, Jens Jacob Asmussen, 1821-1885
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Frederick Calvin Norton - Public Domain
Chamberlain, Abiram, 1837-1911
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Cantet, Laurent
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Hall, Gwendolyn Midlo
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William Owen (1769-1825) - Public Domain
Scott, William, Baron Stowell, 1745-1836
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Ministry of Supply - Public Domain
Walker, Diana Barnato
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Grahame, Margot, 1911-1982
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Flint, Frank P. (Frank Putnam), 1862-1929
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Scopoli, Giovanni Antonio, 1723-1788
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Simson, Eduard von 1810-1899
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Soldi, Andrea, 1703?-1771?
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Heller, Stephen, 1813-1888
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unknown - Public Domain
Haupt, Lewis M. (Lewis Muhlenberg), 1844-1937
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C. M. Stieglitz - Public Domain
Eisler, Hanns
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Scott Schram - CC BY 2.0
Smith, Mindy