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unknown - Public Domain
Florida Photographic Collection, photographer not listed - Public Domain
original uploader -
chattingjason (Jason Chatting) - CC BY 2.0
Contemporary photograph - Public Domain
unidentified photographer - Public Domain
Charles Balthazar Julien Févret de Saint-Mémin, 12 Mar 1770 - 23 Jun 1852. - Public Domain
Anonymous - Public Domain
Bellino Photo Studios - Public Domain
Office of the Juvenile Instructor - Public Domain
Robert Abbott Hadfield (1858-1940) - Public Domain
Public Domain
Lotte Meitner-Graf - CC BY 4.0
PeteWright - CC BY 2.0
ja - Public Domain
Maryland State Archives - Public Domain
"marco annunziata" - CC BY 2.0
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Aman, Alfred. C.
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unknown - Public Domain
Blaga, Lucian, 1895-1961
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Sanday, W. (William), 1843-1920
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Florida Photographic Collection, photographer not listed - Public Domain
Chapman, A. W. (Alvan Wentworth), 1809-1899
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original uploader -
Stent, Gunther S. (Gunther Siegmund), 1924-2008
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chattingjason (Jason Chatting) - CC BY 2.0
Odonnell, Rosie
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Contemporary photograph - Public Domain
Otto, Rudolf, 1869-1937
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Norman, E. Herbert, 1909-1957
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unidentified photographer - Public Domain
Kessler, George Edward, 1862-1923
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Talmadge, Norma, 1894-1957
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Cameron, Donald Roderick, 1834-1905
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Charles Balthazar Julien Févret de Saint-Mémin, 12 Mar 1770 - 23 Jun 1852. - Public Domain
Bates, James Woodson, 1788-1846
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Anonymous - Public Domain
Bernfeld, Siegfried, 1892-1953
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Bellino Photo Studios - Public Domain
Tresca, Carlo, 1879-1943
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Boltzmann, Ludwig, 1844-1906
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Office of the Juvenile Instructor - Public Domain
Kimball, Jonathan Golden, 1853-1938
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Robert Abbott Hadfield (1858-1940) - Public Domain
Percy, John, 1817-1889
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Public Domain
Grant, Jesse Root, 1858-1934
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Kōtoku, Shūsui, 1871-1911
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Quinn, John, 1870-1924
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Weatherly, Frederic Edward, 1848-1929
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Nepomuceno, Alberto, 1864-1920
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Public Domain
Fisher, Zachary, 1910-
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Lotte Meitner-Graf - CC BY 4.0
Rosenheim, Max Leonard,, Baron Rosenheim, 1908-1972
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PeteWright - CC BY 2.0
Jessop, Craig D.
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ja - Public Domain
Yasuda, Yukihiko, 1884-1978
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Blagoev, Dimitŭr, 1856-1924
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Fairbanks, Douglas, 1883-1939
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Maryland State Archives - Public Domain
Pratt, Enoch, 1808-1896
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"marco annunziata" - CC BY 2.0
Campbell, Isobel