. a _ poh - : Dr. Wolfram Heumann: Brunswick,March 5 1956 ~Botanisch hes Institut Federal Union of Germany - der Technischen Hochschule . .Braunschweig,Humboldtstr.1 Professor Dr.Joshua Lederberg ‘University of Wisconsin -» -. College of Agriculture Department of Genetics Madison/ Wisc.-U. Se Ay ce much obliged: Ho | you: “for: your. letter 7 Ichighly appreciate your thoughtfully prefaring: for my ' pébiuary! BO , fingythere and I. beg to thank you. for: “Raving; 7B So engaged your >| Housing: Bureau to. help. a i : “= Accdotding to regulations of. the: : Deutsche Forsghutigsgenein- “