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Duettists - CC BY 3.0
NBC Radio - Public Domain
unknown - Public Domain
en - Public Domain
http://www.aworan.com - CC BY 2.0
Dende - CC BY-SA 4.0
author - Public Domain
Public Domain
Buffalo Evening News - Public Domain
Capitolist - CC BY-SA 4.0
Ernst Ludwig Kirchner - Public Domain
Lucas-kallahan - CC BY-SA 4.0
U.S. Air Force - Public Domain
Batten, Barton, Durstine & Osborn for the show's sponsor, Campbell's Soup. It was not uncommon in the 1950s and 1960s for publicity material to be distributed by either an advertising or public relations agency. - Public Domain
Autor/Fotograf: Willy Pragher - CC0 1.0
US gov - Public Domain
BrokenSphere - CC BY-SA 3.0
Justin Morabito - CC BY 2.0
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Duettists - CC BY 3.0
Booth, Webster
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Friedman, Jeffrey, 1954-
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NBC Radio - Public Domain
Lavalle, Paul
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Chancellor, John, 1927-1996
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unknown - Public Domain
Clum, John P., 1851-1932
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en - Public Domain
Little Wolf, -1904
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Kunzen, Friedrich Ludwig Aemilius, 1761-1817
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Baldwin, J. M. (Joseph Mason), 1878-1945
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http://www.aworan.com - CC BY 2.0
Alexander, Monty
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Dende - CC BY-SA 4.0
Toole, John Kennedy, 1937-1969
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author - Public Domain
Reynolds, John Fulton, 1820-1863
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Public Domain
Röntgen, Wilhelm Conrad, 1845-1923
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Public Domain
Bibb, William Wyatt, 1781-1820
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Gregory, Caspar René, 1846-1917
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Orde Lees, Thomas, 1877-1958
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Cranworth, Robert Monsey Rolfe, Baron, 1790-1868
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O'Donojú, Juan, 1762-1821
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Salvador, Henri, 1917-2008
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unknown - Public Domain
Shingarev, A. I. (Andreĭ Ivanovich), 1869-1918
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Buffalo Evening News - Public Domain
Alexander, De Alva Stanwood, 1845-1925
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Capitolist - CC BY-SA 4.0
Aldrich, Bess Streeter, 1881-1954
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Ernst Ludwig Kirchner - Public Domain
Schaxel, Julius, 1887-1943
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Portalis, Joseph-Marie, 1778-1858
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Lucas-kallahan - CC BY-SA 4.0
Assad, Clarice
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U.S. Air Force - Public Domain
Westover, Oscar, 1883-1938
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Batten, Barton, Durstine & Osborn for the show's sponsor, Campbell's Soup. It was not uncommon in the 1950s and 1960s for publicity material to be distributed by either an advertising or public relations agency. - Public Domain
Clayton, Jan
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Autor/Fotograf: Willy Pragher - CC0 1.0
Schmieder, Wolfgang
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US gov - Public Domain
Prentiss, Samuel, 1782-1857
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BrokenSphere - CC BY-SA 3.0
Larter, Ali, 1976-
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Justin Morabito - CC BY 2.0
Hall, Phil, 1953-