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Acme News photos - Public Domain
Thomas Radlwimmer - CC BY 2.0
unknown - Public Domain
James Northcote - Public Domain
User Tagishsimon - Public Domain
L. U. Reavis, author. Western Engraving Company (St. Louis), engraver. - Public Domain
Cactus And Succulent Society Of America - CC BY-SA 2.5
Painting by Raphaelle Peale, photo of painting by Will Brown. - Public Domain
Simiprof - CC BY-SA 4.0
Motopark - CC BY-SA 3.0
Pach - Public Domain
Georges Biard - CC BY-SA 3.0
original uploader - Public Domain
Public Domain
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Huston, Walter, 1884-1950
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Westermann, François Joseph 1751-1794
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Albright, William Foxwell, 1891-1971
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García, Manuel, 1805-1906
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Acme News photos - Public Domain
Conway, Jack, 1887-1952
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Thomas Radlwimmer - CC BY 2.0
Godard, Michel
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unknown - Public Domain
Lépine, Jean-Antoine 1720-1814
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Dragonetti, Domenico, 1763-1846
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Hales, John, 1584-1656
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James Northcote - Public Domain
Burke, Edmund, 1729-1797
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Reynolds, Allie, 1915-1994
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User Tagishsimon - Public Domain
Bland, Hubert, 1856-1914
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L. U. Reavis, author. Western Engraving Company (St. Louis), engraver. - Public Domain
McLean, J. H. (James Henry), 1829-1886
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Maier, Michael, 1568-1622
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Cactus And Succulent Society Of America - CC BY-SA 2.5
Pittier, Henri, 1857-1950
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unknown - Public Domain
Cargill, Donald, 1619?-1681
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Painting by Raphaelle Peale, photo of painting by Will Brown. - Public Domain
Harmar, Josiah, 1753-1813
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Simiprof - CC BY-SA 4.0
Bothezat, Georges de
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Williams, Anthony, 1951-
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Zangara, Giuseppe, 1900-1933
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Motopark - CC BY-SA 3.0
Salminen, Matti
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Pach - Public Domain
Page, Curtis Hidden, 1870-1946
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Georges Biard - CC BY-SA 3.0
Ducey, Caroline, 1977-
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Shostak, Arthur B.
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original uploader - Public Domain
Bell, Charles Henry, 1823-1893
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Public Domain
Gardner, John W. (John William), 1912-2002
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Hansen, Emil Chr. (Emil Christian), 1842-1909
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Ragaz, Leonhard, 1868-1945
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Ringgold, Cadwalader, 1802-1867
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Goldberg, Rube, 1883-1970