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Cochrane, William, 1831-1898 - Public Domain
Hill & Adamson - Public Domain
unknown - Public Domain
*:File:Otto_Struve_US_post_1949.JPG - Public Domain
Gerhard51 - Public Domain
Gage Skidmore - CC BY-SA 3.0
file photo; scan of hardcopy by Tim Davenport - Public Domain
Kim Traynor - CC BY-SA 3.0
NACA - Public Domain
Nathaniel Hone - Public Domain
David Shankbone - CC BY-SA 3.0
Lars Jacob for CabarEng. - CC BY-SA 3.0
Public Domain
Laura Kolb - CC BY 2.0
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Haig, Sid, 1939-....
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Cochrane, William, 1831-1898 - Public Domain
Wilson, Daniel, Sir, 1816-1892
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Hill & Adamson - Public Domain
Latham, R.G. (Robert Gordon), 1812-1888
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unknown - Public Domain
Ralfs, John
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Blunck, Detlev, 1798-1854
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*:File:Otto_Struve_US_post_1949.JPG - Public Domain
Struve, Otto, 1897-1963
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Gerhard51 - Public Domain
Gabrilowitsch, Ossip, 1878-1936
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Gage Skidmore - CC BY-SA 3.0
Beaver, Jim, 1950-
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Williams, Aubrey Willis, 1890-1965
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unknown - Public Domain
Hagen, Friedrich Heinrich von der 1780-1856
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Pastore, John O. (John Orlando), 1907-2000
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Cameron, J. D. (James Donald), 1833-1918
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Henderson, Horace
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Kenyon, Frederic G. (Frederic George), Sir, 1863-1952
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Yearsley, Ann, 1753-1806
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file photo; scan of hardcopy by Tim Davenport - Public Domain
Thompson, Carl Dean, 1870-1949
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Wood, S. C. (Samuel Casey), 1830-1913
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Knuth, Donald Ervin, 1938-....
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Fry, Caroline, 1787-1846
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Kim Traynor - CC BY-SA 3.0
Henryson, Robert, 1430?-1506?
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Costello, Dolores, 1905-1979
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NACA - Public Domain
Ames, Joseph Sweetman, 1864-1943
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Nathaniel Hone - Public Domain
Fielding, John, Sir, 1721-1780
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David Shankbone - CC BY-SA 3.0
Epperson, John, 1955-
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Lars Jacob for CabarEng. - CC BY-SA 3.0
Jonsson, Busk Margit, 1929-
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Hayashi, Shihei, 1738-1793
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Billy, André, 1882-1971
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Jensen, Johan-Laurentz 1800-1856
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Public Domain
Gejdenson, Samuel, 1948-
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Laura Kolb - CC BY 2.0
Tate, Buddy