April 25, 1955

Mr. Hobert A. Day
Librarian Editor
Institute 6£ Microblology
Rutgers University

New Brunswick, N.d.

Dear Mr. Day:

Thank yoy for your message of the 21st.

In fact, I haw tried &o save a very few copies of all my papers for
just such high-priority requests as your own and will send what I can under
separate cover.

I am also enclosing a bibliographic list. I trust it will not be necessary
to send you item # 39, and Dr. Nelson can give you #44. Items 9 and 16 are
exausted but have been reprinted in "Papers in Microbial Genesics" which is
still in print (see enclosed circular).

I will keep the Inetitute (or Dr. Waksman) on my regular mailing list for
future publications.

Yours sincerely

Joshua Lederberg oe
Professor of Genetics

Enc: P, Ql, 22