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unknown - Public Domain
unknown photographer - Public Domain
Artist : Willy Bosschem; photo by Georges Jansoone (JoJan - CC BY-SA 3.0
Jon Roig - CC BY 2.0
Laura Kolb - CC BY 2.0
Mathew Brady Levin Corot Handy - Public Domain
Josef Mukařovský - Public Domain
Jmabel - CC BY-SA 3.0
Gavan Daws - Public Domain
Contemporary portrait - Public Domain
Paul Thompson, photographer. - Public Domain
Valter Campanato/Agência Brasil -
Bain News Service - Public Domain
original uploader - CC BY-SA 3.0
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Stoeffler, Johann, 1452-1531
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unknown - Public Domain
Spellman, John
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Suárez, Francisco, 1548-1617
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Kyle, Billy
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unknown - Public Domain
Ruby, J. Craig (James Craig), 1896-1980
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Guest, Edwin, 1800-1880
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Somerscales, Thomas J., 1842-1927
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unknown photographer - Public Domain
Richmond, Nancy Heywood, 1820-1898
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La Tour, Maurice-Quentin de, 1704-1788
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Artist : Willy Bosschem; photo by Georges Jansoone (JoJan - CC BY-SA 3.0
Bekaert, Piet, 1939-
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Jon Roig - CC BY 2.0
Viesturs, Ed
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unknown - Public Domain
Boren, David, 1941-
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Schuricht, Carl, 1880-1967
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Harrison, Birge, 1854-1929
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Laura Kolb - CC BY 2.0
Tate, Buddy
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Mathew Brady Levin Corot Handy - Public Domain
Cullom, Shelby M. (Shelby Moore), 1829-1914
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Josef Mukařovský - Public Domain
Zajc, Ivan, 1832-1914
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Jmabel - CC BY-SA 3.0
Buckingham, Matthew
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Gavan Daws - Public Domain
Gibson, Walter Murray
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Contemporary portrait - Public Domain
Duppa, Brian, 1588-1662
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Austin, Alfred, 1835-1913
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Paul Thompson, photographer. - Public Domain
McGraw, John Joseph, 1873-1934
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Amat di San Filippo e Sorso, Luigi, 1796-1878
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Valter Campanato/Agência Brasil -
Hill Collins, Patricia
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Harper, Bob
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Bain News Service - Public Domain
Comstock, William Alfred, 1877-1949
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original uploader - CC BY-SA 3.0
Graham, Paul, 1956-....
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Messerschmitt, Willy, 1898-
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Klindworth, Karl
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Lipiński, Edward, 1888-