October 22, 1949.

Dre Ae Pe Krueger,

Dept. Bactoriolory,
University of Oalifornia,
Berkeley, Calif.

Dear Dr. Kruegor:

By this time you should have receivod my prospectus for a
coures in bacterial gonetics. I trust that it fulfilled your
requirenenta.

I am writing now to tell that Dr. Beadle at the Oalifornia
Institute of Technology has written me suggesting that an advanced
lecturo and demonstration course on microbial geneties, presumably
along the lines of the Oold Spring Harbor Phare Course, be organized
at Caltech, with my participation. Because I would bo unable to
accept this offer for next summer if I camo to Berkcley, I would
appreclate very much anything thot could be done to oxpadite
our arrangements, so that I could give Beadle a defindte anower.

Yours sincerely,

Joshua Lederberg,