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Agriculus - CC BY 3.0
Jamesvalentiopera - CC BY-SA 3.0
Abbie Rowe - Public Domain
user at project - Public Domain
unknown - Public Domain
Paul Ekman Group, LLC - CC BY-SA 3.0
LJP assistant - Public Domain
Európa Pont - CC BY 2.0
Adolf Hölzel - Public Domain
Eric Koch / Anefo -
original uploader - Public Domain
Public Domain
NoJin - CC BY-SA 3.0
Sheldon (Shelly) Levy - CC BY-SA 2.0
unknown<br/> - Public Domain
Félix Nadar - Public Domain
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Agriculus - CC BY 3.0
Behrend, Siegfried, 1933-1990
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Young, Philip, 1910-1987
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Henrick, Richard P.
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Burton, Robert Taylor, 1821-1907
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Jamesvalentiopera - CC BY-SA 3.0
Valenti, James
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Abbie Rowe - Public Domain
Dutton, Frederick G., 1923-
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user at project - Public Domain
Schmandt-Besserat, Denise.
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Obey, David R.
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unknown - Public Domain
Reed, John Oren, 1856-1916
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Paul Ekman Group, LLC - CC BY-SA 3.0
Ekman, Paul.
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LJP assistant - Public Domain
La Rue, Danny.
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Babcock, S. M.
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Európa Pont - CC BY 2.0
Horváth János 1921-
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Adolf Hölzel - Public Domain
Hölzel, Adolf, 1853-1934
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Eric Koch / Anefo -
Middendorf, John William, 1924-
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original uploader - Public Domain
Porras, Belisario, 1856-1942
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Woodbury, Daniel P. (Daniel Phineas), 1812-1864
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Public Domain
Hornblower, William B. (William Butler), 1851-1914
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Thomson, Henry, 1773-1843
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Blei, Franz, 1871-1942
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NoJin - CC BY-SA 3.0
Mainer, Martin, 1959-
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Qāsim, ʻAbd al-Ḥakīm
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unknown - Public Domain
Threlfall, Richard, 1861-1932
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Sheldon (Shelly) Levy - CC BY-SA 2.0
Alexander, Eric
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Ramsay, Allan, 1686-1758
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Carter, Charles David, 1868-1929
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unknown - Public Domain
Keyser, Charles E. (Charles Edward), 1847-1929
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unknown<br/> - Public Domain
Tilghman, William Matthew, 1854-1924
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Taylor, George William, 1901-1972
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Félix Nadar - Public Domain
Guys, Constantin, 1805-1892