From the Vault comes from the Pacifica Radio Archives (PRA), considered by historians and scholars to be one of the oldest and most important audio collections in the world. Chronicling the political, cultural and artistic movements of the second half of the 20th century, Pacifica radio programs include documentaries, performances, discussions, debates, drama, poetry readings, commentaries and radio arts. - See more at: http://www.pacificaradioarchives.org/about-archives#sthash.PxuD8Xom.dpuf