t

é

Yale Univer sity New Haven, Connecticut

Dr. Joshua Lederberg
Department of Genetics
Stanford University
Medical Center

Palo Alto, Calif.

Dear Dr. Lederberg:

Department of Biology

Osborn Memorial Laboratories

December 21, 1964

Thank you for your letter and enclosure. I will be happy
to send you a reprint as soon as they arrive. I have two large
papers in press on season of birth ~- the first is a study involving
the Old World and the southern hemisphere and the second concerns
the northern New World. A third one is in progress which will be
an historical survey of data that exist from the 16th century onwards.

Dr. Hutchinson sends best wishes.

encl.

Sincerely,

f .
: lebe Jy Vespa

Ursula M. Cowgill

@

[is bamap