DEC 1 1969

RALPH YARBOROUGH, TEX., CHAIRMAN

JENNINGS RANDOLPH, W. VA. JACOB K. JAVITS, N.Y.
HARRISON A, WILLIAMS, JR., N.J. WINSTON L. PROUTY, VT.

CLAIBORNE PELL, R.I. PETER H. DOMINICK, COLO.
EDWARD M. KENNEDY, MASS. GEORGE MURPHY, CALIF. .
GAYLORD NELSON, WIS. RICHARD S. SCHWEIKER, PA. IC { 2 St f S {
WALTER F. MONDALE, MINN. HENRY BELLMON, OKLA. WY e co eS eng e
THOMAS F. EAGLETON, MO. WILLIAM B. SAXBE, OHIO
ALAN CRANSTON, CALIF. COMMITTEE ON
HAROLD E. HUGHES, IOWA LABOR AND PUBLIC WELFARE
ROBERT 0. HARRIS, STAFF DIRECTOR WASHINGTON, D.C. 20510

JOHN S, FORSYTHE, GENERAL. COUNSEL.

Novenber 24, 1969

Joshua Lederberg
Genetics Department
Stanford University
Stanford, California

Dear Joshua:

Your articles on food additives and mutagenic and carcinogenic
elements in the environment have been read with great interest.
I hope to hold hearings soon on some aspects of these matters,
though I have made no official annomcement at this time.

A survey on the epidemiology of DDT in relation to cancer and
hypertension is most intriguing and, perhaps, could become

a new chapter to the pesticides story.

Your insights and knowledge on these matters are, as usual,
of great concern and use to me.

Sincerely yours,

dbh ne NELSON

«oS. Senator

wostan ayaahnd

GN