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author - CC0 1.0
unknown - Public Domain
:en:Henry Jamison Handy -
Adelphi University - Public Domain
Pascal Dagnan-Bouveret - Public Domain
Napoleon Sarony - Public Domain
Barraud & Jerrard, Photographers - Public Domain
Collectie SPAARNESTAD PHOTO/NA/Anefo/Rob Croes -
J. M. Kuhn - Public Domain
Johann Michael Voltz - Public Domain
Original uploader -
Mariusz Kubik, http://www.mariuszkubik.pl - CC BY-SA 3.0
Public Domain
user at project - Public Domain
Schmid, Renate - CC BY-SA 2.0
by Thomas Illman - Public Domain
W. Moreley Punshon - Public Domain
*Photo by Müller, Simon - CC BY-SA 3.0
Spencer DeSanto, Graduate Student - Public Domain
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author - CC0 1.0
Mendoza y Ríos, José de, 1763-1816
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unknown - Public Domain
Dunbar, William, 1749-1810
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Delaunay, Robert, 1885-1941
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unknown - Public Domain
MacKillop, Mary, Saint, 1842-1909
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:en:Henry Jamison Handy -
Lopez, Al, 1908-
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Mather, William Gwinn, 1857-1951
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Adelphi University - Public Domain
Levermore, Charles H. (Charles Herbert), 1856-1927
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Pascal Dagnan-Bouveret - Public Domain
Courtois, Gustave, 1852-1923
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Napoleon Sarony - Public Domain
Homer, Winslow, 1836-1910
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Barraud & Jerrard, Photographers - Public Domain
Wilson, Erasmus, Sir, 1809-1884
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Collectie SPAARNESTAD PHOTO/NA/Anefo/Rob Croes -
Luns, Joseph M. A. H. (Joseph Marie Antoine Hubert), 1911-2002
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J. M. Kuhn - Public Domain
Oberhoffer, Emil, 1867-1933
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Johann Michael Voltz - Public Domain
Voltz, Johann Michael, 1784-1858
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Original uploader -
Ascherson, Neal
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Mariusz Kubik, http://www.mariuszkubik.pl - CC BY-SA 3.0
Mrożek, Sławomir
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Schele, Linda.
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unknown - Public Domain
Karpeles, Gustav, 1848-1909
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Public Domain
Cairnes, John Elliott, 1823-1875
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Komura, Jutarō, 1855-1911
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user at project - Public Domain
Brierley, Benjamin, 1825-1896
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Schmid, Renate - CC BY-SA 2.0
Isenberg, James A.
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by Thomas Illman - Public Domain
Smith, John Stafford, 1750-1836
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Beauvallet, Pierre-Nicolas, 1750-1818
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W. Moreley Punshon - Public Domain
Punshon, William Morley, 1824-1881
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Lunn, Henry S. (Henry Simpson), 1859-1939
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Krause, Tom
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Hamill, James A. (James Alphonsus), 1877-1941
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unknown - Public Domain
Parry, Milman.
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*Photo by Müller, Simon - CC BY-SA 3.0
Klaus, Josef
Image from Wikimedia Commons
Spencer DeSanto, Graduate Student - Public Domain
Chiao, Raymond Y.