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Public Domain
GFHund - CC BY 3.0
Toglenn - CC BY-SA 3.0
City of Chicago - Public Domain
unknown - Public Domain
Seattle Municipal Archives - CC BY 2.0
Thorleif Wardenær - CC BY-SA 3.0
Norris Galpin Osborn (1858-1932) - Public Domain
Loescher & Petsch. Berlin phot. 86. / Meisenbach Riffarth & Co. Berlin, grav. - Public Domain
Kramis, Nicholas J., (1908–1988) - Public Domain
Franmarie Metzler - Public Domain
Garry Knight - CC BY 2.0
Splosack - Public Domain
Contemporary photograph - Public Domain
Tomjc.55 - CC BY-SA 4.0
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Acevedo Díaz, Eduardo, 1851-1921
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Public Domain
Stump, Bob, 1927-
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University of Chicago.
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GFHund - CC BY 3.0
Kossel, W. (Walther Ludwig Julius), 1888-1956
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Eskola, Pentti, 1883-1964
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Toglenn - CC BY-SA 3.0
Patrick, Tera, 1976-
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City of Chicago - Public Domain
Busse, Fred A. (Fred Adolph), 1866-1914
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Finson, Louis, approximately 1580-1617
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Strickland, Gerald, baron, 1861-1940
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unknown - Public Domain
Stannard, George Jerrison, 1820-1886
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Seattle Municipal Archives - CC BY 2.0
Hanson, Ole, 1874-1940
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Johnson, Harold Terry, 1907-1988
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Thorleif Wardenær - CC BY-SA 3.0
Finne, Ferdinand, 1910-
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Norris Galpin Osborn (1858-1932) - Public Domain
Lake, Everett J. (Everett John), 1871-1948
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Lange, Oskar, 1904-1965
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Loescher & Petsch. Berlin phot. 86. / Meisenbach Riffarth & Co. Berlin, grav. - Public Domain
Dillmann, August, 1823-1894
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Durocher, Leo, 1906-1991
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Kramis, Nicholas J., (1908–1988) - Public Domain
Burgdorfer, Willy, 1925-
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Franmarie Metzler - Public Domain
Haaland, Debra A. (Debra Anne), 1960-
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Moscherosch, Johann Michael, 1601-1669
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Canning, Charlotte, Countess Canning, 1817-1861
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Rendell, Ruth, 1930-....
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McClung, Lee, 1870-1914
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Garry Knight - CC BY 2.0
Kusama, Yayoi, 1929-
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Splosack - Public Domain
Gallagher, Mary, 1947-
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Francq van Berkhij, Jan le, 1729-1813
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unknown - Public Domain
Smith, Arthur Donaldson, 1866-1939
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unknown - Public Domain
Drury, Newton Bishop, 1889-
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Contemporary photograph - Public Domain
Mann, Tom, 1856-1941
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Tomjc.55 - CC BY-SA 4.0
Azuela, Mariano, 1873-1952