March 9, 195)

AIRMAIL

Dr. Alexander Haddow

The Chester Beatty Research Institute
Royal Cancer Hospital

Fulham Road

London, S.W. 3

ENGLAND

Dear Dr, Haddow:

Thank you for your note of February 23, I will,
of course, contime to keep you on my reprint mailing
list. In return, might I ask the favor of being kept
in mind as the recipient of papers from your Institute
on subjects of mutual interest, especially chemical
mutagenesis and carcinogenesis,

Yours sincerely,

Josma Lederberg
Associate Professor of Gen tics

JL /mg