UNIVERSITY OF ILLINOIS DEPARTMENT OF BACTERIOLOGY 362 NOYES LABORATORY OF CHEMISTRY URBANA + i e¢615,1953 c Dr.i.M.Lederberg, Devartment of Genetics, University of Wisconsin, Madison 6, Wisconsin. Dear Dr.Lederberg: Flease find herewith enclosed your "Acknowledgment of receipt" form, as requested. We thank you for sending the stock requested by use Ye shall sreatly appreciate your returning the enclosed copy of this letter as aclmowledgment of receipt. Sincerely yours, —~ dL ‘ » J eps Skipping Glerk, Traffic Dept.;, Dr.Luria's Office. Encl.