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unknown - Public Domain
US Government Printing Office - Public Domain
Henry Chase - Public Domain
Gage Skidmore - CC BY-SA 3.0
Photographer not named in original source. - Public Domain
Hendrik Johannes Haverman - Public Domain
Jeasto - CC BY-SA 3.0
Universal Studios - Public Domain
LesMeloures -
anonymous - Public Domain
J.B. ARRIEU ALBERTINI - CC BY-SA 3.0
Public Domain
Robert Thivierge (Thivierr) -
Bjenks - CC BY 3.0
Mathew Brady Levin Corot Handy - Public Domain
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Herbert, Henry William, 1807-1858
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Nixon, Jeremiah W. (Jeremiah Willson), 1956-
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Jackson, F. Hamilton (Frederick Hamilton), 1848-1923
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unknown - Public Domain
Franklin, John, 1786-1847
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Cavendish, William, Sir, 1505?-1557
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Michna z Otradovic, Adam, approximately 1600-1676
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US Government Printing Office - Public Domain
Trimble, James W. (James William), 1894-1972
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Henry Chase - Public Domain
Robie, Frederick, 1822-1912
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Gage Skidmore - CC BY-SA 3.0
West, Adam, 1928-
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Magnus, Gustav, 1802-1870
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Photographer not named in original source. - Public Domain
Reinhardt, Aurelia Henry, 1877-1948
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Parker, Peter, 1785-1814
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Kenrick, Peter Richard, 1806-1896
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Rojas, Ricardo, 1882-1957
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Hendrik Johannes Haverman - Public Domain
Mesdag, Hendrik Willem, 1831-1915
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Laredo, Ruth
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Wensleydale, James Parke, Baron, 1782-1868
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Jeasto - CC BY-SA 3.0
East, Edward Hyde, 1764-1847
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Wilson, John, 1588-1667
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Universal Studios - Public Domain
Putnam, Nina Wilcox, 1888-1962
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LesMeloures -
Harze, Leopold
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anonymous - Public Domain
Proctor, F. F. (Frederick Freeman), 1851-1929
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J.B. ARRIEU ALBERTINI - CC BY-SA 3.0
Samie, Catherine, 1933-...
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Public Domain
Jeppson, Morris R. (Morris Richard), 1922-2010
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Robert Thivierge (Thivierr) -
Mathews, Jake, 1970-
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unknown - Public Domain
Bortkiewicz, Sergei, 1877-1952
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Bjenks - CC BY 3.0
Murray, Les A., 1938-....
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unknown - Public Domain
Barton, Clara, 1821-1912
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Mathew Brady Levin Corot Handy - Public Domain
McDonald, Joseph E. (Joseph Ewing), 1819-1891
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Johann Friedrich III, Herzog zu Sachsen, 1538-1565