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Gordon Malloy (†1937) - Public Domain
Carl Lender - CC BY-SA 3.0
Jrkruk - CC BY-SA 3.0
unknown - Public Domain
CBS Television - Public Domain
unknown -
[Royal] Institute of Chemistry of Great Britain and Ireland. - Public Domain
Joseph Nollekens - Public Domain
:de:Emil Stumpp - Public Domain
English school of the early 19th century - Public Domain
Evert Augustus Duyckinck and George Long Duyckinck, editors. Published by Charles Scribner, New York. - Public Domain
A Howard - CC BY 2.0
Alissaarp - Public Domain
Carl Van Vechten - Public Domain
Anonymous photographer. - Public Domain
Hoary - CC BY-SA 3.0
Image from Wikimedia Commons
Gordon Malloy (†1937) - Public Domain
Fletcher, Tex, 1910-1987
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Carl Lender - CC BY-SA 3.0
Taylor, Greg, 1963-....
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Jrkruk - CC BY-SA 3.0
Paleczny, Piotr
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Woodville, William, 1752-1805
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Laffoon, Ruby, 1869-1941
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Weld, Thomas, 1773-1837
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unknown - Public Domain
Pickens, F. W. (Francis Wilkinson), 1805-1869
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Coe, David B.
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CBS Television - Public Domain
Ghostley, Alice, 1926-2007
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unknown -
Campana, Dino, 1885-1932
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Peri, Jacopo, 1561-1633
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[Royal] Institute of Chemistry of Great Britain and Ireland. - Public Domain
Wright, C. R. Alder (Charles Romley Alder), 1844-
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Joseph Nollekens - Public Domain
Townley, Charles, 1737-1805
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Lockyer, Nicholas, 1611-1685
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Lindgren, Erick
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Bates, Alan, 1934-2003.
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:de:Emil Stumpp - Public Domain
Halt, Karl, Ritter von, 1891-1964
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Jackson, Benjamin Daydon, 1846-1927
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Fogarty, John Edward, 1913-1967
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Charcot, Jean, 1867-1936
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Hullah, John, 1812-1884
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English school of the early 19th century - Public Domain
Bourdon, Sébastien, 1616-1671
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Evert Augustus Duyckinck and George Long Duyckinck, editors. Published by Charles Scribner, New York. - Public Domain
Thompson, Daniel P. (Daniel Pierce), 1795-1868
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Eder, Josef Maria, 1855-1944
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Marsh, Reginald, 1898-1954
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A Howard - CC BY 2.0
McLean, Don, 1945-
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Alissaarp - Public Domain
Arp, Halton C.
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Carl Van Vechten - Public Domain
Bontemps, Arna, 1902-1973
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Anonymous photographer. - Public Domain
Dickson, H. R. P. (Harold Richard Patrick), 1881-1959
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Hoary - CC BY-SA 3.0
Kikai, Hiroo, 1945-