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El Ágora - CC BY-SA 3.0
unknown - Public Domain
unbekannter Künstler - Public Domain
US Government Printing Office - Public Domain
Olivier Roller, :w:fr:InLibroVeritas -
see above - CC BY 2.0
Harper's Weekly, (1860 Dec. 22). - Public Domain
Photographer: William S. Warren (Boston) - Public Domain
Thomas Phillips (1770 – 1845) - Public Domain
:it:Utente:Mark Merola - Public Domain
file: Jdsteakley - Public Domain
Swampyank - Public Domain
photographer-Olga Troughton, New York - Public Domain
Kelliej1976 - CC BY-SA 4.0
DCPL Commons -
Koroesu - Public Domain
Stephencdickson - CC BY-SA 4.0
Canadian Film Centre - CC BY 2.0
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El Ágora - CC BY-SA 3.0
Gómez Pedraza, Manuel 1789-1851
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Stewart, Thomas Grainger, 1837-1900
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Johnston, Thomas, 1881-1965
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Tillis, Mel
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unknown - Public Domain
Shabbethai Tzevi, 1626-1676
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unbekannter Künstler - Public Domain
Stewart, David, 1800-1858
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Ahlfors, Lars V. (Lars Valerian), 1907-1996
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unknown - Public Domain
Satterlee, Walter, 1844-1908
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Marshall, Alfred, 1842-1924
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unknown - Public Domain
Brown, J. H. Hobart (John Henry Hobart), 1831-1888
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unknown - Public Domain
Fletcher, Donald
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US Government Printing Office - Public Domain
Dorn, Francis E. (Francis Edwin), 1911-1987
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Olivier Roller, :w:fr:InLibroVeritas -
Lalanne, Francis
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see above - CC BY 2.0
Bruce, David, Sir, 1855-1931
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Harper's Weekly, (1860 Dec. 22). - Public Domain
Boyce, William Waters, 1818-1890
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Forsell, John, 1868-1941
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Photographer: William S. Warren (Boston) - Public Domain
Sauret, Émile, 1852-1920
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Thomas Phillips (1770 – 1845) - Public Domain
Knatchbull, Edward, 1781-1849
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:it:Utente:Mark Merola - Public Domain
Merola, Mario, 1934-2006
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Harris, David, 1946-
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file: Jdsteakley - Public Domain
Kleist, Ewald Christian von 1715-1759
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Hucko, Peanuts
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Swampyank - Public Domain
Wilson, Dorothy Clarke
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DeWint, Peter, 1784-1849
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photographer-Olga Troughton, New York - Public Domain
Alexander, John, 1923-1990
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Kelliej1976 - CC BY-SA 4.0
Roberts, Richard, 1948-
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DCPL Commons -
Hengelmueller Von Hengervar, Ladislaus
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Koroesu - Public Domain
Neebe, Oscar W., 1850-
Image from Wikimedia Commons
Stephencdickson - CC BY-SA 4.0
Nicholson, Henry Alleyne, 1844-1899
Image from Wikimedia Commons
Canadian Film Centre - CC BY 2.0
Yerxa, Ron