19 April 1961
Dear Mr. Hammarskjold:
On 16 February we submitted to you an Appeal to Stop the Spread of Nuclear Weapons. A copy of the Appeal is attached to this
letter. This Appeal was presented as a petition by us and our 720 cosigners, whose names were given to you, as individuals.
We mentioned in our letter of transmittal that no organization had been responsible for the planning or the writing of the
petition or for the collection of signatures.
Shortly thereafter some additional signatures reached us. On the attached sheets there are given the names of 62 people
to whom we had written, and who are to be classed among the initial signers of the petition.
We may point out that there are two Nobel Laureates in this list, bringing the number of Nobel Laureates who have signed the
petition up to 40. Moreover, some additional countries are now represented.
We have also had copies of the petition printed, and have circulated these copies in the United States and other countries.
We are submitting herewith some of these copies, with the attached signatures: a total of more than 50,000 from the United
States and Canada. Other copies will be submitted to you later.
We continue to feel that the problem of achieving international control of armaments, leading ultimately to a total and universal
disarmament, would be greatly complicated and increased in difficulty if many nations or groups of nations were to have stockpiles
of nuclear weapons. We continue to hope that the spread of nuclear weapons to more nations or groups of nations can be delayed
long enough to permit an effective attack to be made on the problem of achieving peace and disarmament in the world.
[Linus Pauling, Ava Helen Pauling]
P.S. Professor A. Butenandt, Nobel Laureate in Chemistry, Germany, has also signed the Appeal as an initial signer. His
signature, which appears on the back of the petition, brings the number of signatures of Nobel Laureates up to 41.