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Unknown U.S. Government employee or someone working at the behest of the government. - Public Domain
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Edward A. Hubbard, National Institutes of Health - Public Domain
John Smith Godfrey Kneller - Public Domain
Raasgat - Public Domain
Rodrigo Werneck - CC BY-SA 3.0
original uploader - Public Domain
NBC Radio/photographer-Bruno of Hollywood - Public Domain
unknown - Public Domain
Wisconsin Center for Film and Theater Research - Public Domain
Frederick W. Taylor - Public Domain
Marsan - CC BY-SA 4.0
Ron Zimmerman -
Wm. Notman & Son - Public Domain
Eva Rinaldi - CC BY-SA 2.0
James Peale - Public Domain
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Unknown U.S. Government employee or someone working at the behest of the government. - Public Domain
Williams, George Howard, 1871-1963
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Collins, Phil
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Learning, Walter, 1938-
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Raleigh, Walter Alexander, Sir, 1861-1922
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Anstey, Christopher, 1724-1805
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Edward A. Hubbard, National Institutes of Health - Public Domain
Shannon, James A. (James Augustine), 1904-1994
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Oswald, Lee Harvey
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John Smith Godfrey Kneller - Public Domain
Tompion, Thomas, 1639-1713
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Raasgat - Public Domain
Tobias, Phillip V.
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Vanni, Francesco, 1563?-1610
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Rodrigo Werneck - CC BY-SA 3.0
Lawton, John, 1946-
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original uploader - Public Domain
Castagnino, Juan Carlos, 1908-1972
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NBC Radio/photographer-Bruno of Hollywood - Public Domain
White, Francia, 1908-1984
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unknown - Public Domain
Lord, Chester Sanders, 1850-1933
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unknown - Public Domain
Freed, Dorothy, 1919-2000
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Wisconsin Center for Film and Theater Research - Public Domain
Butler, David, 1894-1979
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Müller, Wilhelm, 1794-1827
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Boghosian, Varujan
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unknown - Public Domain
Benett, Etheldred, 1776-1845
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Pomodoro, Arnaldo, 1926-....
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unknown - Public Domain
Owens, Wayne, 1937-2002
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Frederick W. Taylor - Public Domain
Gantt, Henry Laurence, 1861-1919
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Marsan - CC BY-SA 4.0
Murciano, Carlos
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Kimmel, John J., 1866-1942
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Ron Zimmerman -
Rothschild, Philippe, baron de, 1902-
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Wm. Notman & Son - Public Domain
Maxwell, W. S. (William Sutherland), 1874-1952
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Eva Rinaldi - CC BY-SA 2.0
Graham, Marcus
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James Peale - Public Domain
Milledoler, Philip, 1775-1852
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Marshall, Thomas R. (Thomas Riley), 1854-1925
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Overton, John, 1766-1833