Penny Von Eschen on the Jazz Ambassadors

Penny Von Eschen is the author of "Satchmo Blows Up the World." She tells Steve Paulson about the State Department's use of jazz musicians as a weapon in the cold war to win hearts and minds in the Third World. Louis Armstrong, Dizy Gillespie, Duke Ellington and Dave Brubek were among the so-called "jazz ambassadors." And we hear lots of their music, much of it recorded on these tours.