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Henry Cousins Martin Archer Shee - Public Domain
Jezelman - CC BY-SA 4.0
New York state police - Public Domain
http://magazine.amstat.org/blog/2009/09/01/waltershewhartsep09/ - Public Domain
Henry Chase - Public Domain
Royal Canadian Air Force - Public Domain
Knight Foundation - CC BY-SA 2.0
David Starr Jordan (1851-1931) - Public Domain
unknown - Public Domain
Joshin Yamada - CC BY 2.0
Thomas Lawrence -
w:John Longstaff - Public Domain
Contemporary portrait - Public Domain
Duane Hamilton Hurd, author. Everts & Fariss (Philadelphia, PA), publisher. - Public Domain
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Dietzgen, Joseph, 1828-1888
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Henry Cousins Martin Archer Shee - Public Domain
Scarlett, James, Sir, 1769-1844
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Sturm, Christoph Christian, 1740-1786
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Tania, 1920-1982
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Popiel, Karol
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Jezelman - CC BY-SA 4.0
Yannay, Yehuda, 1937-
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New York state police - Public Domain
Larkin, James, 1876-1947
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http://magazine.amstat.org/blog/2009/09/01/waltershewhartsep09/ - Public Domain
Shewhart, Walter A. (Walter Andrew), 1891-1967
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Henry Chase - Public Domain
Sonnor, Selden, 1839-1917
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Rayner, Isidor, 1850-1912
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Royal Canadian Air Force - Public Domain
Magee, John, 1922-1941
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Gran, Daniel, 1694-1757
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Grosvenor, Cyrus Pitt, 1792-1879
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Sánchez, Francisco, approximately 1550-approximately 1623
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Knight Foundation - CC BY-SA 2.0
Mernit, Susan
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David Starr Jordan (1851-1931) - Public Domain
Campbell, Douglas Houghton, 1859-1953
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Barillé, Albert
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Benjamin, S. G. W. (Samuel Greene Wheeler), 1837-1914
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Hudson, Grant Martin, 1868-1955
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Hopper, Edward, 1882-1967
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Urbain, Georges, 1872-1938
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unknown - Public Domain
Archer, John, 1741-1810
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Joshin Yamada - CC BY 2.0
Baldwin, C.
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Hind, J. Russell (John Russell), 1823-1895
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Thomas Lawrence -
Smith, Robert Percy, 1770-1845
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w:John Longstaff - Public Domain
MacCallum, Mungo William, Sir, 1854-1942
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Persinger, Louis, 1887-1966
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Contemporary portrait - Public Domain
Buxton, Thomas Fowell, Sir, 1786-1845
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Koirālā, Viśveśvara Prasāda
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Duane Hamilton Hurd, author. Everts & Fariss (Philadelphia, PA), publisher. - Public Domain
Campbell, William W., 1806-1881