PUBLIC HEALTH LABORATORY SERVICE
(Directed by the Medical Research Council for the Ministry of Health)

Central Enteric Reference Laboratory
and Bureau,

  

Telephone: COLINDALE 7041 (8 lines)
Telegrams: DEFENDER, NORPHONE, LONDON.

COLINDALE AVENUE,
LonpDon, N.W.9.

31st August, 1953.

Dear Dr. Lederberg,

A few weeks ago I had to refuse, much to my regret, Dr. Anderson's
request to send you the typing phages for Salm. typhi-murium, for which you
had asked him.

I enclose a copy of the Second Report to the International Committee
for Enteric Phage Typing, which has now been sent out. The paragraph I
marked on page 7 explains why the typhi-murium typing phages are not yet
available for distribution.

I was looking forward to the pleasure of meeting you at the Rome Congress
and I was sorry to learn you will not be there. I hope another opportunity
may offer itself in a not distant future.

Yours sincerely,

Professor J. Lederberg,

Department of Genetics,

University of Wisconsin,
College of Agriculture,

Agricultural Hall,

Madison, 6,
Wisconsin, U.S.A.