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W. Woodford Clayton, author. Alexander Hay Ritchie (New York, NY), engraver. Everts & Peck (Philadelphia), publisher. - Public Domain
CBS Network - Public Domain
*:File:Andreas_B..JPG - CC BY-SA 3.0
A. Brauer - Public Domain
scienceinmelbourne2007 - CC BY 2.0
CBS Television - Public Domain
unknown - Public Domain
Benjamin J. Falk (October 14, 1853 = March 19, 1925) - Public Domain
Joshua Reynolds - Public Domain
Francis Cotes (1726-1770) - Public Domain
Photo Credit: Jeff Milner Artwork Credit: Clarence Gagnon Art Gallery in Montreal - CC BY 3.0
A. H. Hyde - Public Domain
original uploader - CC BY 2.5
Public Domain
The White House - Public Domain
John Manley (Little Valley, NY), compiler and editor. Hosford & Co. (New York, NY), printer. - Public Domain
anonymous -
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W. Woodford Clayton, author. Alexander Hay Ritchie (New York, NY), engraver. Everts & Peck (Philadelphia), publisher. - Public Domain
Gerry, Elbridge, 1813-1886
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CBS Network - Public Domain
Flagg, Fannie
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*:File:Andreas_B..JPG - CC BY-SA 3.0
Birch, Andreas, 1758-1829
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A. Brauer - Public Domain
Boutet de Monvel, Louis-Maurice, 1851-1913
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scienceinmelbourne2007 - CC BY 2.0
Flannery, Tim F. (Tim Fridtjof), 1956-
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CBS Television - Public Domain
Falana, Lola
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unknown - Public Domain
Brouncker, William Brouncker, Viscount, 1620 or 1621-1684
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Benjamin J. Falk (October 14, 1853 = March 19, 1925) - Public Domain
Ulmar, Geraldine, 1862-1932
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Gradison, Willis D. (Willis David), 1928-
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Dale, Virginia, 1917-1994
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Joshua Reynolds - Public Domain
Thomas, John, 1712-1793
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Middleton, William G. 1846-1892
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Pólya, George, 1887-1985
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Wight, O.W. (Orlando Williams), 1824-1888
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Francis Cotes (1726-1770) - Public Domain
Ilchester, Stephen Fox-Strangways, Earl of, 1704-1776
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Ferrari, Benedetto, approximately 1603-1681
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Ries, Franz 1755-1846
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unknown - Public Domain
Rothschild, Nathaniel de
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Photo Credit: Jeff Milner Artwork Credit: Clarence Gagnon Art Gallery in Montreal - CC BY 3.0
Gagnon, Clarence A., 1881-1942
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Shou, Robin
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Arrechea, Alexandre, 1970-
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A. H. Hyde - Public Domain
Wesley, Samuel
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Rixey, Presley Marion, 1852-1928
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original uploader - CC BY 2.5
Nicolai, Carsten, 1965-....
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Guastavillani, Filippo, ?-1587
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Woodward, Augustus B. (Augustus Brevoort), -1827
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Public Domain
Horner, John Scott, 1802-1883
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The White House - Public Domain
Roosevelt, Selwa
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John Manley (Little Valley, NY), compiler and editor. Hosford & Co. (New York, NY), printer. - Public Domain
Martin, Frederick Stanley, 1794-1865
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anonymous -
Bílek, František, 1872-1941