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Nerdoguate - CC BY-SA 3.0
Congressional Pictorial Directory - Public Domain
unknown - Public Domain
uncertain - Public Domain
Svenska Barnboksinstitutet - CC BY 3.0
anonymous - Public Domain
Willem van de Poll - CC BY-SA 3.0
unknown author - Public Domain
The National Academy of Sciences - Public Domain
Léopold Flameng - Public Domain
Engraver William Walker, after Henry Room - Public Domain
Georges Biard - CC BY-SA 3.0
Non connu - Public Domain
Naiaomdredom - CC BY-SA 3.0
Public Domain
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Nerdoguate - CC BY-SA 3.0
Arévalo Martínez, Rafael, 1884-1975
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Congressional Pictorial Directory - Public Domain
Chapman, Jim, 1945-
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unknown - Public Domain
Xenophon
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Louis III, Prince of Condé, 1668-1710
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uncertain - Public Domain
Alenza y Nieto, Leonardo, 1807-1845
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Svenska Barnboksinstitutet - CC BY 3.0
Tenggren, Gustaf, 1896-1970
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Takács, Jenő, 1902-2005
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Young, Robert N. (Robert Nicholas), 1900-1964
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anonymous - Public Domain
López Velarde, Ramón, 1888-1921
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Altavilla, Ramiro de la Puente y González-Nandín, Marqués de 1845-1909.
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Willem van de Poll - CC BY-SA 3.0
Tjarda van Starkenborgh Stachouwer, A. W. L., 1888-1978
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unknown author - Public Domain
Carmichael, Hoagy, 1899-1981
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The National Academy of Sciences - Public Domain
Adkins, Homer, 1892-1949
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Steele, Bob, 1907-1988
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Léopold Flameng - Public Domain
Méryon, Charles, 1821-1868
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Newcastle, Henry Pelham Fiennes Pelham Clinton, Duke of, 1785-1851
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Engraver William Walker, after Henry Room - Public Domain
Guthrie, G. J. (George James), 1785-1856
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Georges Biard - CC BY-SA 3.0
Girardot, Annie, 1931-2011
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Manet, Julie, 1878-1966
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Bonham, Milledge L. (Milledge Luke), 1813-1890
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Non connu - Public Domain
Ivanov-Razumnik, 1878-1946
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Maison, Nicolas-Joseph, marquis, 1771-1840
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McDonald, Marshall, 1835-1895
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unknown - Public Domain
Sanjabi, Karim
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unknown - Public Domain
Einstein, Lewis, 1877-1967
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Naiaomdredom - CC BY-SA 3.0
Zeng, Fanzhi, 1964-
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Jadassohn, Salomon, 1831-1902
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Carcassi, Matteo, 1792-1853
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unknown - Public Domain
Sobinov, Leonid Vitalʹevich, 1872-1934
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Public Domain
Steunenberg, Frank, 1861-1905