Image from Wikimedia Commons
Anonymous (photographer) -
Isawsubtropics - CC BY-SA 3.0
unknown - Public Domain
Pirie MacDonald -
Sulfur -
Linnean Society - Public Domain
:en:Algemene Vereniging Radio Omroep -
Columbia Broadcasting System (CBS). Photo has "CBS Photo" logo in lower left corner. - Public Domain
National Photo Company Collection (Library of Congress) - Public Domain
Harris & Ewing - Public Domain
Chatsam - CC BY-SA 3.0
RayAYang - CC BY-SA 3.0
Gene Schiavone - Public Domain
unknown - CC0 1.0
Colin1661music - CC BY-SA 3.0
Public Domain
Worcester Bank & Trust Company (Worcester, MA), publisher. Walton Advertising and Printing Company (Boston, MA), printer. - Public Domain
Alexander Evgenievich Yakovlev - Public Domain
Image from Wikimedia Commons
Anonymous (photographer) -
Domela, 1900-1992
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Isawsubtropics - CC BY-SA 3.0
Matamoros, Gustavo, 1957-
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Riebeeck, Jan van 1619-1677
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Lothian, Schomberg Henry Kerr, Marquess of, 1833-1900
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unknown - Public Domain
Murr, Christoph Gottlieb von 1733-1811
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Pirie MacDonald -
Pinchot, Gifford, 1865-1946
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Sulfur -
Juneau, Solomon Laurent, 1793-1856
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Goncharova, Natalii︠a︡ Sergeevna, 1881-1962
Image from Wikimedia Commons
Linnean Society - Public Domain
Strasburger, Eduard, 1844-1912
Image from Wikimedia Commons
:en:Algemene Vereniging Radio Omroep -
Lobo (Vocalist)
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Columbia Broadcasting System (CBS). Photo has "CBS Photo" logo in lower left corner. - Public Domain
Solomon, Izler, 1910-1987
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Davis, William H. (William Hammatt), 1879-1964
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Zehnder, Ludwig, 1854-
Image from Wikimedia Commons
National Photo Company Collection (Library of Congress) - Public Domain
Adams, Harriet Chalmers, 1875-1937
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Harris & Ewing - Public Domain
Ayres, Steven B. (Steven Beckwith), 1861-1929
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Smith, Sidney E. (Sidney Earle), 1897-1959
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Chatsam - CC BY-SA 3.0
Lacombe, Georges, 1868-1916
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unknown - Public Domain
Colombo, Scipio
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unknown - Public Domain
Keppel, Frederick P. (Frederick Paul), 1875-1943
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RayAYang - CC BY-SA 3.0
Gunning, Robert C. (Robert Clifford), 1931-
Image from Wikimedia Commons
Gene Schiavone - Public Domain
Corella, Ángel 1975-
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unknown - CC0 1.0
Sacher, Paul, 1906-1999
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Colin1661music - CC BY-SA 3.0
Rankin, Paul
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Hickok, Wild Bill, 1837-1876
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Public Domain
Hill, James Jerome 1838-1916
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Worcester Bank & Trust Company (Worcester, MA), publisher. Walton Advertising and Printing Company (Boston, MA), printer. - Public Domain
Allen, Charles, 1797-1869
Image from Wikimedia Commons
Alexander Evgenievich Yakovlev - Public Domain
Montenegro, Roberto, 1887-1968
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unknown - Public Domain
Kirby, W. F. (William Forsell), 1844-1912
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O'Neal, Zelma, 1903-1989
Image from Wikimedia Commons
Freer, Eleanor Everest