Dr. L. S. Baron

AMS Graduate Sehool
Dept. Bacteriology

Washington 12, D.C.

Dear Dr. Baroh:

Thank you for your letter cf the 2lst.,I am sorry to have set you off
on a chase after the wild geese. Perhups, if B my quote Dr. Bruner's letter
direc tly:

"While I was in Italy I sent in the neighborhood ef 31 cultures cf
[S. napoli] to the Army Medical School in Washangton. These strains were iso-
lated from Army personnel and Itellan cividluns. Theyfiaight still be available
at the Srmy Medical Jchool.... During my stay in Italy I also sent the Army
Medical School several strains of sovatic group B that were nonmotile. I assumed
they were S. typhimurius....”

Tt occurs to ae ouw that my asaumption that your outfit and the Army Medical
School are the sane may be wrong.

Your letter was not quits clear as to the details of your transduction
experiments, with Kyl+ and 57. Is the vector in your experiments a Vi (typing)
phages?

As I mentioned previously, I would be very happy to have you visit our
laboratory. The week of May 18 would be, far and away, the most convenient
time on our part. o

If I my ask another favor, do you have some cultures of 5. abor tua—equi?
The one 1 have been working with (#26) 1s presently quite rough.

Yours sincerely,

Joshua Lederberg