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Charles Roscoe Savage - Public Domain
W. Richardson - Public Domain
Public Broadcasting Service - Public Domain
:de:Rudolf Dührkoop - Public Domain
Public Domain
White House - Public Domain
Chris Samuel - CC BY 2.0
not verifiable<br/> - Public Domain
James Lafayette (died 1923). Information provided by Valerie McAtear from the Royal Entomological Society: "We do have a copy in our photograph collection and the only information I can provide is that printed on the back is Copyright photograph by Lafayette Ltd" - Public Domain
unknown - Public Domain
by Peter A. Juley & Son - Public Domain
Harihar Das - Public Domain
Follower of John Michael Wright - Public Domain
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Charles Roscoe Savage - Public Domain
Smith, David H. (David Hyrum), 1844-1904
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W. Richardson - Public Domain
Gamble, John, -1687
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Landau, L. D. (Lev Davidovich), 1908-1968
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Haitink, Bernard, 1929-....
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Hillis, Newell Dwight, 1858-1929
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Public Broadcasting Service - Public Domain
Hunnicutt, Gayle
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Kielmannsegge, Auguste Charlotte, Gräfin von, 1777-1863
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:de:Rudolf Dührkoop - Public Domain
Kekulé, Reinhard, 1839-1911
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Gomułka, Władysław, 1905-1982
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Public Domain
Huntington, Jabez Williams, 1788-1847
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White House - Public Domain
White, Margita Eklund, 1937-2002
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Cienfuegos, Camilo
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Chris Samuel - CC BY 2.0
Williams, Donna, 1963-....
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Bonaparte, Victor Napoléon Jérôme Frédéric, prince, 1862-1926
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not verifiable<br/> - Public Domain
Jaekel, Otto
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Bastianich, Lidia
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Public Domain
Troisi, Massimo, 1953-1994
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Alexander III, Emperor of Russia, 1845-1894
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James Lafayette (died 1923). Information provided by Valerie McAtear from the Royal Entomological Society: "We do have a copy in our photograph collection and the only information I can provide is that printed on the back is Copyright photograph by Lafayette Ltd" - Public Domain
Poulton, Edward Bagnall, Sir, 1856-1943
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Sainton, Prosper, 1813-1890
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Hawker, H. G. (Harry George), 1889-1921
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unknown - Public Domain
Happel, Eberhard Werner, 1647-1690
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by Peter A. Juley & Son - Public Domain
Bellows, George, 1882-1925
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Upton, Florence K. (Florence Kate), 1873-1922
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unknown - Public Domain
Giordani, Pietro, 1774-1848
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Edwards, George, 1694-1773
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Valenciennes, M., 1794-1865
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Harihar Das - Public Domain
Dutt, Toru, 1856-1877
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Groves, Leslie R. (Leslie Richard), 1896-1970
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Follower of John Michael Wright - Public Domain
Vaughan, John, Sir, 1603-1674