Division of Biological Sciences Plant Pathology North Carolina State College Raleigh May 23, 1955 Dr. Joshua Lederberg Genetics Department University of Wisconsin Madison, Wisconsin Dear Dr. Lederberg: I plan to be on the campus of the University of Wisconsin during the week of June 13th. Sometime during that week, I would like to visit with you for the purpose of discussing some problems relating to microbial genetic studies. Upon arrival, I will con- tact you in order to arrange a definite date and time. I hope a visit with you will be possible and that it will not cause you a serious inconvenience. Yours truly; L Upp J¢@ Le Apple sst. Professor ILA /jde