JOHN E. PFEIFFER
NEW HOPE, PA. April 26, 1958

Dear Dr. Lederberg,

Thank you very wuch for your reprints and most helpful
letter. My danger always in preparing a book for the
laymen is that I get interested considerably beyond the
depth of materiel I can hope to include in what will be
a nontechnical book. In other words, I tend to over-
research.

But your suggestions are most tempting. I hadewritten
Orick and plan to see him at Cambridge in the fall. But
Florkin wasn't on my list, nor was'van de Hulst. I shall
make a special effort to see them as well as Buchner and
the Paris group. I believe I told you that my base of
operations after mid-june or thereabouts will be the
Naples Zoological Station, mainly because I want to do
‘some Organizing of material and perhaps even a start on
the writing.

It is a heavy schedule, but I'm looking forward to it--
and to meeting you, at home or abroad.

Yours,

Ke