80 American Leaders, 16 of Them Nobel Laureates, Ask U.S. Government to Initiate Renewed Action in the U.N. and Outside It to Induce Arab States to Negotiate Directly with Israel for Peace Settlement (September 1967)
Letter from Cass Canfield to Joshua Lederberg (October 3, 1962)
My Conscience Will Not Allow Me to Protect Myself by Sacrificing These Idealistic Young People. I Am Not Going To Do It! (1960)
[Open] Letter to Edward Knapp, National Science Foundation (November 20, 1983)
[Petition from Nobel Laureates to Pope Paul VI - American version] (March 1965)
[Petition from Nobel Laureates to Pope Paul VI - British version] (March 1965)
[Petition from Nobel Laureates to President Richard M. Nixon protesting involvement in Vietnam War] (May 1970)
[Petition in support of Lyndon B. Johnson] (October 16, 1964)
[Petition to President Lyndon Johnson expressing concern over existing restraints on employment of chemical and biological weapons] (1966)
[Petition to President Richard M. Nixon] (1969)
[Petition to Science magazine] (December 1994)
[Petition to the United State Congress and the President of the United States urging limitation on cloning be limited to the cloning of human beings] (1998)
[Petition to the United States Congress and the President of the United States urging the allowing of federally-funded biomedical scientists to conduct research with human pluripotent stem cells] (1999)
[Petition urging the ratification of the Chemical Weapons Convention of 1996] [1996]