February 3, 1966 Dr. Norman Kretchmer 10 rue du Docteur Finlay Paris 15, France Dear Norm: This is just a brief note to tell you how delighted I was to learn that you had decided to come back to Stanford. I am sorry I didn't see you during your very hasty visit to have a better chance to tell you then. I know we will both be looking forward to operating in the new labora- tories, which are coming along beautifully, and which should afford a much better opportunity for us to get together here on a number of issues. Sincerely, o Joshua Lederberg Professor of Genetics _