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20th Century Fox - Public Domain
NASA - Public Domain
kyeleek - CC BY 2.0
Phi Mu Alpha Sinfonia Fraternity - Public Domain
Anne E. Keeling - Public Domain
unknown - Public Domain
Lithograph by A.-L. Lemercier after a portrait by A. Maurin - Public Domain
J. W. Glass - Public Domain
Charles P. Stewart, author. Published in "The Courier-News" (Bridgewater, NJ). - Public Domain
Public Domain
Georges Biard - CC BY-SA 3.0
Pkravchenko - CC BY-SA 3.0
Not stated - Public Domain
Diliff - CC BY 3.0
CHVentures - CC BY-SA 3.0
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Henschenius, Godefridus, 1601-1681
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20th Century Fox - Public Domain
Lyon, Sue, 1946-....
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Fontaine, Pierre François Léonard, 1762-1853
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Vallat, Xavier, 1891-1972
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NASA - Public Domain
Ochoa, Ellen, 1958-
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kyeleek - CC BY 2.0
Connell, Raewyn, 1944-....
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Mathews, Charles Thompson, 1863-1934
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Phi Mu Alpha Sinfonia Fraternity - Public Domain
Burrell, Percy Jewett
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Anne E. Keeling - Public Domain
Cobden, Richard, 1804-1865
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unknown - Public Domain
Coit, Stanton, 1857-1944
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Lithograph by A.-L. Lemercier after a portrait by A. Maurin - Public Domain
Clauzel, Bertrand, 1772-1842
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J. W. Glass - Public Domain
Rolfe, John, 1585-1622
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unknown - Public Domain
Sharpe, Edmund, 1809-1877
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Moore, George, 1852-1933
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Charles P. Stewart, author. Published in "The Courier-News" (Bridgewater, NJ). - Public Domain
Crail, Joe, 1877-1938
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Provenzo, Eugène F.
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Sparks, William Andrew Jackson, 1828-1904
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Public Domain
Glass, Henry, 1844-1908
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Kiess, Carl Clarence
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Fountain, R. T. (Richard Tillman), 1885-1945
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Von Schmidt, Harold, 1893-1982
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Ray, John, 1627-1705
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Bowie, Lester
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Georges Biard - CC BY-SA 3.0
Semoun, Élie, 1963-....
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Pkravchenko - CC BY-SA 3.0
Slipyĭ, Ĭosyf, 1892-1984
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Not stated - Public Domain
Tulasne, Charles, 1816-1884
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Diliff - CC BY 3.0
Salvi, Nicola
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Gibson, Edmund, 1669-1748
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Ban, Shigeru, 1957-....
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CHVentures - CC BY-SA 3.0
Renaldo, Duncan