THE FOREIGN SERVICE OF THE UNITED STATES OF AMERICA American Embassy, Stockholm, Sweden, April 22, 1959. Dear Joshua: I did not expect to hear from you from Stanford, although it is not altogether surprising that you have found it hard to get away from your new post so early. I hope you will manage to get to Italy in time to partake in some of the famous Mediterranean leisure as well as to accomplish what you want to down there, We fully understand about your not wanting to be tied down to having the party we suggested. It is probable that we will give a party for Wallace Brode, Science Adviser to the Secretary of State and his wife in the afternoon of Monday, June first, and that we will invite you, but of course Rd you will be free to come or not. We know that you are under mos great pressure to see people when you come to Stockholm. It ~ will be good to see you sometime during your visit. If I can ap be of any help to you either in getting you a chance to see a. someone you might otherwise be in danger of missing or to ) misS someone you might otherwise be in danger of seeing or mt in any other way, don't hesitate to call on me either before ft or during your visit. There is a possibility but not a very : high probability that I will be in Helsinki for two or three . days, returning on the afternoon of May thirtieth. Mary and I live at 63 Strandvagen, telephone 61 06 51, not very far from the Embassy at 101 Strandvdgen, telephone 63 05 20. I had a very pleasant discussion with Dr. Caspersson a few days ago. I must confess thathe was not very much in- terested in setting involved in the moonstuff analysis instrumentation. I will be seeing more of him, however, and perhaps something will come out of it. In the meantime maybe you can put in a plug when you write him or see him. - E. Mack Scigntific Attache Professor Joshua Lederberg, Departivent of Genetics, Stanford University, Stanford, California. JEMirj