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Unattributed - Public Domain
Mathew Brady - Public Domain
National Photo Company - Public Domain
unknown - Public Domain
Manxruler - CC BY-SA 3.0
Anonymous - Public Domain
Michael Vlasaty -
Atelier Rude - CC BY-SA 3.0
University of Bologna - Public Domain
Joshin Yamada - CC BY 2.0
Daderot -
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Merriam, William Rush, 1849-1931
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Unattributed - Public Domain
Le Roy, Adrian, approximately 1520-1598
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Rodino, Peter W.
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Lawley, Arthur, Sir, 1860-1932
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Homer
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Mathew Brady - Public Domain
Gottschalk, Louis Moreau
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Tintoretto, 1518-1594
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National Photo Company - Public Domain
Logan, William Turner, 1874-1941.
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unknown - Public Domain
Chase, John, 1856-
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Pownall, Thomas, 1722-1805
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unknown - Public Domain
Garampi, Giuseppe, 1725-1792
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Herbert, Victor, 1859-1924
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Poggi, Giuseppe, 1811-1901
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Manxruler - CC BY-SA 3.0
Fournier, Pierre, 1906-1986
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Bubbles, John W.
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Anonymous - Public Domain
Condict, Ira, 1764-1811
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Sullivan, Edmund J. (Edmund Joseph), 1869-1933
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Michael Vlasaty -
Simmons, Johnny, 1986-
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Fowler, Richard, 1765-1863
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Young, Richard W. (Richard Whitehead), 1858-1919
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Atelier Rude - CC BY-SA 3.0
Løvberg, Aase Nordmo, 1923-
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Gunderson, Carl, 1864-1933
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University of Bologna - Public Domain
Manfredi, Gabriello, 1681-1761
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Goodchild, Michael F.
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Levi-Montalcini, Rita, 1909-2012
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Snyder, Mr. (Charles Philip), 1847-1915
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Henry, the Minstrel, active 1470-1492
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Joshin Yamada - CC BY 2.0
Rall, Ted
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Daderot -
Hope, Thomas, 1770?-1831
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unknown - Public Domain
Harris, Corra, 1869-1935