October 17, 1996: Censored in Palestine (letter)
November 8, 1990: Writers in Prison (letter)
February 18, 1988: Release Juris Bumeisters (letter)
June 11, 1987: Against Loans to Chile (letter)
August 14, 1986: Arrests in Poland (letter)
February 18, 1982: Solidarity Meeting (letter)
December 17, 1981: Missing Person (letter)
April 16, 1981: For 'Solidarity' (letter)
December 6, 1979: Free the Czechs (letter)
January 26, 1978: Human Rights for Everybody (letter)
November 24, 1977: Words for the Shah (letter)
September 15, 1977: Freedom in Iran (letter)
January 25, 1973: Ford's Better Idea (letter)
May 22, 1969: Time to Quit (letter)
August 22, 1968: Poet Power (letter)
March 14, 1968: Protest (letter)