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ABC Television - Public Domain
:de:Gebrüder Siebe - Public Domain
https://www.flickr.com/photos/tfa/ Thomas Faivre-Duboz - CC BY-SA 2.0
Adolf Dauthage - Public Domain
unknown - Public Domain
Webb, William Larkin - Public Domain
AndrewRH - CC BY-SA 3.0
Mathew Brady - Public Domain
Edoardo Matania (1847-1929) - Public Domain
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US gov - Public Domain
Sharon - CC BY-SA 4.0
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SMU Central University Libraries -
Walker, Doak, 1927-
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ABC Television - Public Domain
Clark, Dane, 1912-1998
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Ford, Whitey, 1928-
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Outes, Felix F. (Felix Faustino), 1878-1939
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:de:Gebrüder Siebe - Public Domain
Lazarus, Moritz, 1824-1903
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Sharkey, William Lewis, 1798-1873
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Evans, De Scott, 1847-1898
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https://www.flickr.com/photos/tfa/ Thomas Faivre-Duboz - CC BY-SA 2.0
Jones, Marion, 1975-
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Adolf Dauthage - Public Domain
Lanner, Katti, 1829-1908
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unknown - Public Domain
Riddle, Theodate Pope, 1867-1946
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Ingersoll, Charles Anthony, 1798-1860
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Klint, Kaare
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MacDiarmid, Alan G., 1927-2007
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Merrill, Stuart, 1863-1915
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Toussaint, Pierre, 1766-1853
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Ospina, Pedro Nel, 1858-1927
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Byers, Wm. N. (William Newton), 1831-1903
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Eiffel, Gustave, 1832-1923
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Webb, William Larkin - Public Domain
Schiaparelli, G. V. (Giovanni Virginio), 1835-1910
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Pearson, Virginia, 1886-1958
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AndrewRH - CC BY-SA 3.0
Adams, Richard, 1920-....
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Mathew Brady - Public Domain
Hazen, William Babcock, 1830-1887
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Honegger, Gottfried, 1917-....
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Edoardo Matania (1847-1929) - Public Domain
Nicotera, Giovanni, 1828-1894
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Finnis, John
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Beecroft, Vanessa
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US gov - Public Domain
Dickstein, Samuel, 1885-1954
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Miller, Zell, 1932-
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Sharon - CC BY-SA 4.0
Gibson, J. P.
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Owen, Wilfred, 1893-1918