October 21, 1955

Dr. K. G. Atwood
Biology Division
Oak Ridgs National Laboratory
Oak Ridge, Tenn.

Dear Kin—

November 29 (& 30, I assume) will be fine. I am tentatively schdduling
your talk for 4:90 PM on Tuesday. Do you want to offer another title, or
will "Biological mechanieoms of radiation damge" cover it? This would be
for a fairly general scientific audience. I am also hoping that you will
give us a seminar, in the Genetics Department, on your heterokaryon studlee-—
we can arrange that ad hoc.

Please let ma know whether to rigidify these plans, ami tell us when

and where to axpect your arrival. Needless to say, your accomodations are
taken care of automatically.

Yours sincerely,

as)
J oaks Lederberg