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Ugo Ponte onl - CC BY-SA 2.0
Unknown (private collection) - Public Domain
Teddyyy - CC BY-SA 3.0
first upload to German Wikipedia by :de:Benutzer:Hoss - Public Domain
Hamplhamplova - CC BY-SA 3.0
Suse Byk -
janinsanfran - CC BY-SA 2.0
unknown - Public Domain
Harris & Ewing, photographer - Public Domain
Frick.Photoarchive - CC BY 3.0
Public Domain
Corgimwch - CC BY-SA 4.0
unknown photographer circa 1915 - Public Domain
Thierry Ehrmann (flickr username: Abode of Chaos) - CC BY 2.0
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Ketcham, John Clark, 1873-1941
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Poiseuille, M. le docteur (Jean-Léonard-Marie), 1799-1869
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Tille, Alexander, 1866-1912
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Ugo Ponte onl - CC BY-SA 2.0
Capuçon, Gautier
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Unknown (private collection) - Public Domain
Pozzi, Catherine, 1882-1934
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Gerlach, Carl
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Teddyyy - CC BY-SA 3.0
Fuller, Samuel, 1912-1997
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Caldwell, Charles, 1772-1853
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Vanloo, Carle, 1705-1765
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Lidarti, Christian Joseph, 1730-approximately 1793
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first upload to German Wikipedia by :de:Benutzer:Hoss - Public Domain
Böhm, Hans approximately 1450-1476
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Hamplhamplova - CC BY-SA 3.0
Kolář, Jiří, 1914-2002
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Suse Byk -
Graener, Paul, 1872-1944
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janinsanfran - CC BY-SA 2.0
Robinson, V. Gene, 1947-
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unknown - Public Domain
Hopkins, Charles, 1842-1934
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Gonzales, Ambrosio José
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Harris & Ewing, photographer - Public Domain
Hunt, William Henry, 1857-1949
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Jefferson, Isaac, 1775-
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Frick.Photoarchive - CC BY 3.0
Rossiter, Thomas Prichard, 1818-1871
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Grumberg, Jean-Claude, 1939-....
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Batty, Robert, 1763?-1849
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Pughe, W. Owen (William Owen), 1759-1835
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Public Domain
Lane, Henry Smith, 1811-1881
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unknown - Public Domain
Landes, Ruth, 1908-1991
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Löwenhjelm, Harriet, 1887-1918
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Corgimwch - CC BY-SA 4.0
Markham, Roy.
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unknown - Public Domain
Hadley, James, 1821-1872
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unknown photographer circa 1915 - Public Domain
Veblen, Oswald, 1880-1960
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Spence, Basil, Sir, 1907-1976
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Thierry Ehrmann (flickr username: Abode of Chaos) - CC BY 2.0
Agamben, Giorgio, 1942-....