PISCOl tasoratoRiEs inc

SYRACUSE -NEW YORK

July 10, 1957

Dr. Joshua Lederberg
Department of Medical Genetics
The University of Wisconsin
Madison, Wisconsin

Dear Joshua:

This will be a short one in relation to the
acknowledgement of the disulfonic analog of DAP. It is
perfectly OK to use whatever data you have accumlated and
we have no objection to your listing us as a source of the
material.

Witn very best regards.

Sincerely yours,

BRISTOL LABORATORIES INC.

Ny
ph Lein, Director
Microbiological Research

JL: jlg