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Brady-Handy Photograph Collection (Library of Congress) - Public Domain
G.Q. Colton († 1884) - Public Domain
Anne Whitney - Public Domain
unknown - Public Domain
Ron Baker (https://www.flickr.com/photos/kingsnake) - CC BY-SA 3.0
w:Daniël Mijtens - Public Domain
Fpveronique - CC BY-SA 4.0
Spip1945 - CC BY-SA 4.0
Kurt.Köhler - CC BY-SA 4.0
Gryffindor - CC BY-SA 3.0
US Government Printing Office - Public Domain
Public Domain
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Rosenthal, Arthur, 1887-1959
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Seamans, Robert Channing, 1918-2008
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Pollock, Henry E. (Henry Edward), 1864-1953
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Barine, Arvède, 1840-1908
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Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Chapin, Chester W. (Chester William), 1798-1883
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G.Q. Colton († 1884) - Public Domain
Colton, G. Q. (Gardner Quincy), 1814-1898
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Gohier, Louis-Jérôme, 1746-1830
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Whitcomb, Edgar D.
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Takizawa, Bakin, 1767-1848
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Anne Whitney - Public Domain
Palmer, George Herbert, 1842-1933
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Criss, Francis, 1901-1973
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unknown - Public Domain
Austen, Cassandra, 1773-1845
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Ron Baker (https://www.flickr.com/photos/kingsnake) - CC BY-SA 3.0
Wonderland, Carolyn
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Borromini, Francesco, 1599-1667
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Hellman, Jerome
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Spengler, Lazarus, 1479-1534
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Bearden, Gene, 1920-2004
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unknown - Public Domain
Březina, Otokar, 1868-1929
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w:Daniël Mijtens - Public Domain
Edmondes, Thomas, Sir, 1563?-1639
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Isserles, Moses ben Israel, approximately 1525-1572
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Morgan, Thomas Charles, Sir, 1783-1843
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Duméril, Auguste Henri André, 1812-1870
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Fpveronique - CC BY-SA 4.0
Fitelberg, Jerzy
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Mahtab, Harekrushna, 1900-1987
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Spip1945 - CC BY-SA 4.0
Jadot, Jean, 1909-2009
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Kurt.Köhler - CC BY-SA 4.0
Domínguez, Óscar 1906-1957
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Drach, Ivan
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Gryffindor - CC BY-SA 3.0
Oheka (Cold Spring Harbor, N.Y.)
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US Government Printing Office - Public Domain
Duncan, Robert, 1920-2011
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Public Domain
Brown, George, 1787-1859