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https://www.flickr.com/people/66463488@N06 - CC BY 2.0
Photoplay magazine - Public Domain
National Photo Co. - Public Domain
JasonParis - CC BY 2.0
unknown - Public Domain
Thomas Schulz - CC BY-SA 2.0
Chemical and Metallurgical Engineering, Volume 27, 1922 - Public Domain
knudsentrust.org - Public Domain
Lemurblanc - CC BY-SA 4.0
photographer-J. Abresch, New York. - Public Domain
Kittybrewster - Public Domain
original uploader - Public Domain
Marianmontesdeoca - CC BY-SA 3.0
Swerling - CC BY-SA 4.0
Roferbia - CC BY-SA 4.0
Alexander Bassano - Public Domain
Who-When-What Company - Public Domain
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Melly, George, 1926-2007
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https://www.flickr.com/people/66463488@N06 - CC BY 2.0
Gonzalez, Raul (handballer)
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Photoplay magazine - Public Domain
Vaughn, Alberta
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National Photo Co. - Public Domain
McMillan, Thomas Sanders, 1888-1939
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JasonParis - CC BY 2.0
Solomon, Evan
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Stevens, Inger, 1931-1970
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unknown - Public Domain
Auzoux, Louis Thomas Jérôme 1797-1880
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Thomas Schulz - CC BY-SA 2.0
Pacino, Al, 1940-....
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Derzhavin, Gavriil Romanovich, 1743-1816
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Chamoun, Camille, 1900-1987
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Chemical and Metallurgical Engineering, Volume 27, 1922 - Public Domain
Capen, Samuel Paul, 1878-1956
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knudsentrust.org - Public Domain
Knudsen, Valdemar, -1898
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unknown - Public Domain
Goodling, George A. (George Atlee), 1896-1982
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unknown - Public Domain
Recabarren, Luis Emilio, 1876-1924
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Lemurblanc - CC BY-SA 4.0
Huang, Yong ping 1954-....
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photographer-J. Abresch, New York. - Public Domain
List, Eugene
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Zoritch, George, 1917-2009
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Berman, Shelley
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Kittybrewster - Public Domain
Arbuthnot, Charles, 1767-1850
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Gaveaux, Pierre, 1760-1825
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unknown - Public Domain
Abellio, Raymond, 1907-1986
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original uploader - Public Domain
Parkhurst, Helen, 1887-1973
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Marianmontesdeoca - CC BY-SA 3.0
González Palma, Luis 1957-
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Van Flandern, Tom, 1940-2009
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Swerling - CC BY-SA 4.0
Swerling, Jo, 1897-1964
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Roferbia - CC BY-SA 4.0
Simpson, Mona
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Alexander Bassano - Public Domain
MacKinlay, Antoinette Sterling, -1904
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Darboux, Gaston, 1842-1917
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Who-When-What Company - Public Domain
Ames, Edward Raymond, 1806-1879
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Summers, George W. (George William), 1804-1868