July 17, 196!

fre, Janes Crow

The University of Wisconsin
Department of Medical Genetics
185 Medicel Sciences Bul lding
Madison 6, Wisconsin

Dear Jim:

What a delightful Idea for you to work In the lat here. It may
not be profitable to plan a specifle research program so far ahead, but
I'm sure we will still be working on the chemical genetics of 3. subtlils.
The Kleins are having a wonderful time doing the same this summer. 3ut
afne months or a vear would be more sensible. Fron your standpoint you
might want to make it January to September, 1963.

1 think we will still be able to follow through the arrangement
i suggested earlier, when you are ready to make devinite plans. ut
with this much lead time, there might be an alternative - thet you
anoly for an NIK Senlor fellowship.. This would have some edvantages,
especially In regard to taxes on your stipend and your travelling expense.

1 don't know if the following probiam would be particularily
attra-tive to you, but | might sucgest the espulation qanetics of 3°
molecules In B. subtilis’ <- there are sane subtle theoretical es weil ce
experimental niceties in setting up models of “muitigie infection .

Cdds on the meetings sre low.

As aver,

Joshua Lederberg
Professor of Genetics