Bacteriolosy Dept.

September 25, 1957

Dear Dr. Dryden:
Your letter of August 19 hes only just arrived hare.

Thanx you for your cordial invitation. However, as I
may not be back in the U.S. until early December, I vill not
be aodle to sit with the Academy in November. I am afraid I
will also probably have to forego the April meeting in Washington,
as I have a very heavy schedule already committed for that month.
It looks as if there isnothing forit but to wait till next
autumn.

I will be in Melbourne another month; thereafter, wy cor-
respondence had best be routed through Madison. ;

With my regrets, andthanks for your/}trofble, 7
jo 7
/f Youre sincerely,
"Joshua Lederberg
(Dept. Med. Genetics
University of Wisconsin)