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original uploader - Public Domain
unknown - Public Domain
Unknown (Bain News Service, publisher) - Public Domain
Stagebill - Public Domain
Contemporary photograph - Public Domain
Slowking -
spaceodissey - CC BY 2.0
Linnean Society - Public Domain
NoJin - CC BY-SA 4.0
Ragtimedorianhenry2010 - Public Domain
Harris & Ewing - Public Domain
Jean-Baptiste Claude Eugène Guillaume - Public Domain
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original uploader - Public Domain
Mendoza, Daniel, 1764-1836
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unknown - Public Domain
Margueritte, V. (Victor), 1866-1942
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Unknown (Bain News Service, publisher) - Public Domain
Litvinne, Félia 1860-1936
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Birkbeck, George, 1776-1841
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Morse, Marston, 1892-1977
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Bauernfeind, Gustav, 1848-1904
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Reinhart, Johann Christian, 1761-1847
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Stagebill - Public Domain
Dowling, Eddie
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Basile, Giambattista, approximately 1575-1632
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Aretino, Pietro, 1492-1556
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Pollock, Charles Edward, 1823-1897
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Burn Murdoch, W. G. (William Gordon), 1862-1939
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Umeki, Miyoshi, 1929-2007
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Richardson, Mary Curtis, 1848-1931
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Contemporary photograph - Public Domain
Thomson, Edward Deas, 1800-1879
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Slowking -
Marcus, Ben, 1967-....
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unknown - Public Domain
Hopekirk, Helen
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unknown - Public Domain
Hecker, Friedrich, 1811-1881
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spaceodissey - CC BY 2.0
Gere, Richard, 1949-....
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Mosley, Oswald, 1896-1980
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Linnean Society - Public Domain
Strasburger, Eduard, 1844-1912
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Muḥammad, Prophet, -632
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NoJin - CC BY-SA 4.0
Fuková, Eva, 1927-
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Ragtimedorianhenry2010 - Public Domain
Mills, Kerry
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Amir, Aharon, 1923-2008
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Sexton, Mike (Michael Richard)
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Harris & Ewing - Public Domain
Bliss, Tasker Howard, 1853-1930
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Kitchiner, William, 1775?-1827
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Beiderbecke, Bix, 1903-1931
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Jean-Baptiste Claude Eugène Guillaume - Public Domain
Baltard, Louis-Pierre, 1764-1846