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unknown - Public Domain
original uploader - Public Domain
Gage Skidmore - CC BY-SA 3.0
Public Domain
Amedeo Modigliani - Public Domain
Eva Rinaldi - CC BY-SA 2.0
Bain - Public Domain
United States Air Force - Public Domain
unknown -
Anonymous - Public Domain
Tim bates - CC BY-SA 4.0
Frederick W. Taylor - Public Domain
Office of Senator Richard Lugar - Public Domain
Eric Koch / Anefo - CC BY-SA 3.0
Epic Records - Public Domain
someone -
*Photograph: Leon A. Perskie - CC BY 2.0
Bob3321 - CC BY-SA 4.0
not stated - Public Domain
米国長老教会 - Public Domain
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Wilson, Glenn D. (Glenn Daniel)
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unknown - Public Domain
Sessions, Kate Olivia, 1857-1940
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original uploader - Public Domain
Song, Shangjie, 1901-1944
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Gage Skidmore - CC BY-SA 3.0
Shaffer, Anthony, 1962-
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Flagstad, Kirsten, 1895-1962
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Public Domain
Woodin, William H. (William Hartman), 1868-1934
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Amedeo Modigliani - Public Domain
Tree, Iris, 1897-1968
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Eva Rinaldi - CC BY-SA 2.0
Souris, George, 1949-
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Whitney, Harry Payne, 1872-1930
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Bain - Public Domain
Lovett, R. S. (Robert Scott), 1860-1932
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Wattenbach, Wilhelm, 1819-1897
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United States Air Force - Public Domain
McColpin, Carroll W. (Carroll Warren), 1914-2003
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unknown -
Shriver, Eunice Kennedy
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Uvarov, B. P. (Boris Petrovich), 1888-1970
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Anonymous - Public Domain
Montgomery, L.M. (Lucy Maud), 1874-1942
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Tim bates - CC BY-SA 4.0
Defries, J. C. 1934-....
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Frederick W. Taylor - Public Domain
Kendall, Henry P. (Henry Plimpton), 1878-1959
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Morfill, William Richard, 1834-1909
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Sturm, Christoph Christian, 1740-1786
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Office of Senator Richard Lugar - Public Domain
Lugar, Richard
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La Pérouse, Jean-François de Galaup, comte de, 1741-1788
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Eric Koch / Anefo - CC BY-SA 3.0
Marjolin, Robert
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Epic Records - Public Domain
Fogelberg, Dan, 1951- 2007
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someone -
Tree, Michael
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*Photograph: Leon A. Perskie - CC BY 2.0
Roosevelt, Franklin D. (Franklin Delano), 1882-1945
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unknown -
Polak, Jakob Eduard, 1818-1891
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Bob3321 - CC BY-SA 4.0
Ulugh Beg, 1394-1449
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Orrery, Charles Boyle, earl of, 1674-1731
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not stated - Public Domain
Blackburn, Maurice, 1880-1944
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米国長老教会 - Public Domain
Knox, George William, 1853-1912