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Unknown - Public Domain
Photographer not credited - Public Domain
No photographer credited in original source. - Public Domain
anonymous -
Dxede5x - CC BY 3.0
Smithsonian Institution -
IntellectualChristianWikiUser - CC BY-SA 4.0
Mongyamba - CC BY-SA 3.0
Alfons Karny - Public Domain
Thomas Sully - Public Domain
Public Domain
Rogers & Cowan-publicity agency in Beverly Hills - Public Domain
*:File:Ravitch.JPG - CC BY 3.0
Anonymous - Public Domain
Harris & Ewing - Public Domain
U.S. House of Reresentatives - Public Domain
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Heywood, John, 1497?-1580?
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Bright, Charles Tilston
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Unknown - Public Domain
Eberle, Abastenia St. Leger, 1878-
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Eyck, Aldo van 1918-1999
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Ward, Ed, 1948-
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Photographer not credited - Public Domain
Schumann-Heink, Ernestine, 1861-1936
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Prudhomme, Louis-Marie, 1752-1830
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No photographer credited in original source. - Public Domain
Onégin, Sigrid (1889-1943).
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anonymous -
Döblin, Alfred, 1878-1957
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Marcks, Gerhard
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Slaughter, Frank G. (Frank Gill), 1908-2001
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Dxede5x - CC BY 3.0
Thompson, Teddy
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Smithsonian Institution -
Davis, Charles H. (Charles Harold), 1856-1933
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IntellectualChristianWikiUser - CC BY-SA 4.0
Mason, C. H. (Charles Harrison), 1866-1961
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Exposition Universelle of 1889 (Paris)
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Myers, Gustavus, 1872-1942
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Mongyamba - CC BY-SA 3.0
Brooks, N. C. (Nathan Covington), 1809-1898
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Alfons Karny - Public Domain
Parandowski, Jan, 1895-1978
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Thomas Sully - Public Domain
Lyons, Peter, 1734 or 1735-1809
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Balfour, Arthur James, 1848-1930
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Public Domain
Machen, J. Gresham (John Gresham), 1881-1937
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Rogers & Cowan-publicity agency in Beverly Hills - Public Domain
Willson, Meredith, 1902-1984
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*:File:Ravitch.JPG - CC BY 3.0
Ravitch, Richard, 1933-
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Anonymous - Public Domain
Plečnik, Jože (1872-1957).
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Pregerson, Harry, 1923-
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Harris & Ewing - Public Domain
Sabath, Adolph Joachim, 1866-1952
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Lewis, Sinclair, 1885-1951
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Albertson, Frank, 1909-1964
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U.S. House of Reresentatives - Public Domain
Schall, Thomas D. (Thomas David), 1877-1935
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Otis, Harrison Gray, 1765-1848