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NBC Television - Public Domain
Natalia Bargel - CC BY-SA 4.0
White House Photograph Office - Public Domain
Taddeo di Bartolo - Public Domain
Barkin, Herman and Associates for Schlitz, the program's sponsor - Public Domain
unknown - Public Domain
unknown -
anonymous - Public Domain
Géza Anda-Stiftung Zürich - CC BY-SA 3.0
unknown at the XIX century - Public Domain
Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Lia Chang - CC BY-SA 2.0
J. Moss ? - Public Domain
Ghitta Klein Carell - Public Domain
Brady National Photographic Art Gallery (Washington, D.C.), photographer - Public Domain
USA - Public Domain
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NBC Television - Public Domain
Penberthy, Beverly
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Bryan, G. H. (George Hartley), 1864-1928
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Natalia Bargel - CC BY-SA 4.0
Friedman, Rose D.
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Vecchietta, c. 1412-1480
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White House Photograph Office - Public Domain
Lieberman, Evelyn S., 1944-
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Taddeo di Bartolo - Public Domain
Taddeo di Bartolo, approximately 1362-1422
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Barkin, Herman and Associates for Schlitz, the program's sponsor - Public Domain
Carlson, Richard, 1912-1977
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unknown - Public Domain
Beaux, Cecilia, 1855-1942
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Peyre, Marie-Joseph, 1730-1785
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Kreutzberg, Harald, 1902-
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Gummer, Don, 1946-....
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Cleaveland, Moses, 1754-1806
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unknown -
Lovell, Bernard, 1913-2012
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anonymous - Public Domain
Cobenzl, Ludwig Joseph Von
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Tukur, Ulrich, 1957-....
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Géza Anda-Stiftung Zürich - CC BY-SA 3.0
Anda, Géza
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Mantia, Simone, 1873-1951
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Gordon, William, 1736-1816
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unknown at the XIX century - Public Domain
Chappel, Alonzo, 1828-1887
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Brady-Handy Photograph Collection (Library of Congress) - Public Domain
Train, Charles Russell, 1817-1885
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Altmann, Wilhelm, 1862-1951
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Lia Chang - CC BY-SA 2.0
Gotanda, Philip Kan
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Platania, Pietro, 1828-1907
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anonymous - Public Domain
Zaragoza, Ignacio, 1829-1862
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J. Moss ? - Public Domain
Fitzgerald, Cissy, 1873-1941
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Gans, Eduard, 1797-1839
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Ghitta Klein Carell - Public Domain
Mazzoni, Angiolo, 1894-1979
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Brady National Photographic Art Gallery (Washington, D.C.), photographer - Public Domain
Osterhaus, Peter, 1823-1917
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Defrees, John D. (John Dougherty), 1810 or 1811-1882
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USA - Public Domain
Swift, J. G. (Joseph Gardner), 1783-1865