November 27, 1956 Ajz Mail Professor Boris =phrussi Laboratory of Genetics 13 Rue Pierre Curie Paris 5, France Dear Boris: I am sorry to be so late in replying to your kind letter of October 2, I hope you will forgive me, but I am still investigating slternative plans, These are very mach a matter of finances, If we possibly can we will visit Paris on this oceasion but there is also a roblem of time, fitting it in to a rather rigid schedule. will let you know later how things develop. Yours sincerely, Josmua Lederberg Professor of Genetics JLenhn