July 1, 1974 Dear Doctor Nirenberg: I am pleased and honored to inform you that His Holiness, Pope Paul VI, has nominated you for membership in the Pontifical Academy of Sciences. The announcement of your nomination will be published in the July 4th issue of the Osservatore Romano which will appear in Rome on Thursday afternoon. Until that time, the news of your nomination is to be kept confidential. Within a few days, you will receive formal notification of your nomination. Meanwhile, may I respectfully request that you acknowledge receipt of this letter. If you wish to do so by telephone, the number of the Apostolic Delegation is (202) 333-7121. I wish to offer my personal congratulations on your nomination to the Pontifical Academy of Sciences. It is a fitting recognition of the valuable contributions to the welfare of mankind that you have made through your scientific research. With cordial regards and best wishes, I remain Sincerely yours, Jean Jadot Apostolic Delegate