February 26, 1970 President Richard M. Nixon White House Washington, D.C. Dear Mr. President, Let me simply record my appreciation for the forthright stand that you have taken on the extension of our unilateral renunclation of biological weaponry to include toxins. May I also record my enthustastic concurrence with the position offered by ACDA Director Smith at the Geneva Conference that a convention to outlaw biological weapons be negotiated promptly and separately from other outstanding issues. Sincerely yours, Joshua Lederberg Professor of Genetics