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Georges Biard - CC BY-SA 3.0
Johann Elias Haid - Public Domain
Greg Patent - CC BY 3.0
unknown - Public Domain
unknown photographer (no name in catalogue of Literatuurmuseum either) - Public Domain
Carl Lender - CC BY-SA 3.0
dirtybob@dirtybob.com - CC BY 2.5
Allen Hastings Fry - Public Domain
anonymous - CC BY-SA 4.0
Public Domain
Dina Schedrinskaya - Public Domain
Franciszkalotta -
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Vidoni, Pietro
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Georges Biard - CC BY-SA 3.0
Nuytten, Bruno
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Schiff, Mortimer L.
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Darmstaedter, Ludwig, 1846-1927
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Johann Elias Haid - Public Domain
Haid, Johann Jacob, 1704-1767
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Greg Patent - CC BY 3.0
Patent, Greg, 1939-
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unknown - Public Domain
Wartel, Pierre Francois
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Abercromby, Robert, Sir, 1740-1827.
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Sinclair, May
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Beery, Wallace
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unknown photographer (no name in catalogue of Literatuurmuseum either) - Public Domain
Nijhoff, Martinus, 1894-1953
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Carl Lender - CC BY-SA 3.0
Griffith, John Thomas
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dirtybob@dirtybob.com - CC BY 2.5
Million, Tiffany 1966-....
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Billington, Michael, 1939-....
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Allen Hastings Fry - Public Domain
Benson, Arthur Christopher, 1862-1925
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unknown - Public Domain
Stillman, Samuel, 1738-1807
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anonymous - CC BY-SA 4.0
Dessés, Jean 1904-1970
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Bates, Frederick, 1777-1825
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Carl Lender - CC BY-SA 3.0
Balin, Marty
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Carrillo, Santiago
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Becher, Johann Joachim, 1635-1682
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Rajk, László, 1909-1949
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Public Domain
Chandler, Happy, 1898-1991
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Peckham, Wheeler H. (Wheeler Hazard), 1833-1905
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Hicks, J. Braxton, 1823-1897
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Heiden, Konrad, 1901-1966
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Blake, Joaquín, 1759-1827
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Lawrence, Joseph 1976-....
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Dina Schedrinskaya - Public Domain
Zaborov, Boris, 1937-
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Franciszkalotta -
Janowski, Piotr