cc. for Dr.

October 19, 1966

Dr. E. C. Levinthal
Stanford University Medical School
Palo Alto, California

Dear Doctor Levinthal:

I very much enjoyed meeting you and the somewhat rushed
opportunity to discuss your fascinating work and its relation to our efforts
in exobiology.

I enclose a letter to John Westley and hope that he is still in-
terested in the possibility of applying his elegant technics to some of our
samples. No doubt we should spend a lot more time finding out about the
background "noise" of materials here and perhaps cleaning them up with
special care and precautions. However, I only have a small group and the
opportunity to fly the experiment in about two weeks time precludes any
further development of the technic at the present moment.

With best regards.

Yours sincerely,

John Hotchin, M.D.
Research Associate and
Assistant Director

JH/as
Enc.

Lederberg