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unknown - Public Domain
Fernand Desmoulins - Public Domain
Langlumé after a drawing by W. Heuer - Public Domain
Public Domain
User at project link - Public Domain
Grant Brummett - CC BY-SA 3.0
Ondřej Němec - CC BY-SA 4.0
Artist unknown - Public Domain
NASA - Public Domain
Isawsubtropics - CC BY-SA 3.0
artiphax -
Sally Larsen - CC BY-SA 3.0
Lentinijp - CC BY 2.0
Nv8200p - CC BY-SA 3.0
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unknown - Public Domain
Conte, Silvio O.
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Fernand Desmoulins - Public Domain
Xanrof, Léon, 1867-1953
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Clinton, Henry, 1771-1829
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Langlumé after a drawing by W. Heuer - Public Domain
Schall, Claus Nielsen, 1757-1835
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Pasquini, Bernardo, 1637-1710
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Public Domain
Dickinson, Donald McDonald, 1846-1917
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Garrison, Lindley M. (Lindley Miller), 1864-1932
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User at project link - Public Domain
Lattuada, Alberto, 1914-2005
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Grant Brummett - CC BY-SA 3.0
Collins, Lynn, 1979-....
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unknown - Public Domain
Shiga, Shigetaka, 1863-1927
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Roberts, Owen J. (Owen Josephus), 1875-1955
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Billings, Josh, 1818-1885
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Ondřej Němec - CC BY-SA 4.0
Havlová, Olga, 1933-1996
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Artist unknown - Public Domain
D'Urfey, Thomas, 1653-1723
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Langer, František, 1888-1965
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NASA - Public Domain
Cleave, Mary Louise
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unknown - Public Domain
Lieb, Fred, 1888-
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Ivan Aleksandŭr, Czar of Bulgaria, -1371
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unknown - Public Domain
Jones, Alonzo Trévier, 1850-1923
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Lloyd of Dolobran, George, Baron, 1879-1941
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Brooke, John Charles, 1748-1794
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Isawsubtropics - CC BY-SA 3.0
Matamoros, Gustavo, 1957-
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Quintana Roo, Andrés 1787-1851
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Auger, L.-S. (Louis-Simon), 1772-1829
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artiphax -
Holzman, Red
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Sally Larsen - CC BY-SA 3.0
Wiley, William T., 1937-....
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Severus, Lucius Septimius, Emperor of Rome, 146-211
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Lentinijp - CC BY 2.0
Lentini, James, 1958-
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unknown - Public Domain
Stamper, Dave
Image from Wikimedia Commons
Nv8200p - CC BY-SA 3.0
Weinberg, Steven, 1933-....