Attachment 6

Letter from Dr. Shields Warren to Dr. Robert Stone (dated July
11, 1949).

July 11, 1949

Dr. Robert S. Stone
The Medical Center
University Hospital
San Francisco, California

Dear Bob:

I have delayed for some time answering your letter of May 27
because of the difficulty of clarifying in my own mind the
problem of human experimentation. I am taking an increasingly dim
view on it. I have talked with some of the people who were
involved in the Illinois experiments and have learned something
of the aftermath of one at the Massachusetts Prison Colony.

I note in Dr. Dowdy's letter on Page 3 a contradiction, in that
he mentions under prisoners those serving life or twenty-year
sentences; also, that Governor Green's committee recommended that
a habitual criminal or a prisoner who has committed a notorious
or heinous crime should not be considered an acceptable
volunteer. Obviously, none other than these would be serving life
or twenty-year sentences.

The more I consider this problem the more reluctant I am to go
along with experiments of this type. I believe the study of the
results of exposure to internal emitters which we are gathering
should have considerable to offer, also that intensive study of
the Japanese data can help us. Consequently, record me as voting
against human experimentation.

Sincerely yours,

Shields Warren, M.D.
Director, Division of
Biology & Medicine