The University of Chicago CHICAGO 37, ILLINOIS Department of Botany 14 March 1952 Dr. J. Lederberg Department of Genetics! =-5; University of Wisconsin Madison,6,Wisc. Dear Dr. Lederberg: . Regarding your kind offer to allow us to see your "set-up" for the transformation of bacterial strains, we were wondering if we could visit your laboratory on Thursday, March 20, If this date is inconvenient, please let us know of a more suitable time. We would probabily arrive at about 1-1:30 pom. Sime you are busy and there are several people om campus we wish to see see, I am sure that we wouldn't take up more than an hour of your time. Very truly yours / Z oO Dt ary Y Cites Richard M. Klein