March 15, 1990: Celebrating Mencken (letter)
February 18, 1988: Release Juris Bumeisters (letter)
March 28, 1985: The Ali Taygun Case (letter)
June 27, 1974: Soviet Inhumanity (letter)
July 19, 1973: Committee in Defense of Andrei Amalrik (letter)
March 27, 1969: Protest (letter)