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germany - Public Domain
Unknown, more than 100 years old - Public Domain
Paulsloane - CC BY-SA 3.0
Tinsley H. Davis - Public Domain
Louis Vermeille - CC BY-SA 4.0
Ernest Rude - CC BY-SA 4.0
Mathew Brady Levin Corot Handy - Public Domain
Gretchenmcc - CC BY-SA 4.0
Public Domain
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Smithsonian Institution -
Fenton, Mildred Adams, 1899-1995
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Tupolev, Andreĭ Nikolaevich, 1888-1972
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Friedlaender, Israe͏̈l, 1876-1920
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Davis, Richard Harding, 1864-1916
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Danielsson, Tage, 1928-1985
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germany - Public Domain
Fritzsche, Hans, 1900-1953
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Stephenson, John Gould, 1828-1883
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Unknown, more than 100 years old - Public Domain
Inchiquin, Murrough O'Brien, Earl of, 1614-1674
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Strigel, Bernhard, 1460 or 1461-1528
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Lexow, Clarence, 1852-1910
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Congreve, William, 1670-1729
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Paulsloane - CC BY-SA 3.0
Sloane, Paul, 1950-....
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Tinsley H. Davis - Public Domain
Hastings, J. Woodland (John Woodland), 1927-
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Rizzuto, Phil, 1917-2007
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Louis Vermeille - CC BY-SA 4.0
Gensac, Claude, 1927-....
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Liberi, Pietro
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Ernest Rude - CC BY-SA 4.0
Mohr, Otto Lous
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Ravenstein, Ernst Georg, 1834-1913
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Barnes, Alfred Smith, 1817-1888
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Thompson, Henry, Sir, 1820-1904
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Borghi-Mamo, Adelaide, 1826-1901
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Mathew Brady Levin Corot Handy - Public Domain
Kernan, Francis, 1816-1892
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Reilly, Thomas L. (Thomas Lawrence), 1858-1924
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Nottingham, Daniel Finch, Earl of, 1647-1730
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Samwell, David, 1751-1798
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Alarié, Pierrette
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Hesselblad, Elisabeth, 1870-1957
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Gretchenmcc - CC BY-SA 4.0
Shaw, Patricia A., 1946-
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Public Domain
Mulford, David C.
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Lean, David, 1908-1991