April 13, 1989: Crackdown in Prague (letter)
June 11, 1987: Against Loans to Chile (letter)
May 29, 1986: 'Freedom & Peace' & Prison (letter)
April 16, 1981: For 'Solidarity' (letter)
May 17, 1979: Release Dzhemilev (letter)
January 26, 1978: Human Rights for Everybody (letter)
March 31, 1977: Forward with Muste (letter)
November 28, 1974: Victims (letter)
December 13, 1973: American Dissent in Moscow (letter)
June 5, 1969: Sign of the Times (letter)
May 22, 1969: Time to Quit (letter)