ETHYL CORPORATION IOO PARK AVENUE BUILDING AT 41st STREET NEW YORK 17, N.

May 28, 1969 Mr.

ESSO RESEARCH AND ENGINEERING COMPANY M ED ICAL RESEARCH D IVISIO N P.

Esso Resear c h and Eng ineer ing Company (FORMERLY STANDARD OIL DEVELOPMENT COMPANY) P.

ano/) 9ndudin4ai BIO-TEST Jlalmnctfo'U&L, 9nc. 18 10 FRONTA E ROAD NORTHBROOK, ILLINOIS Telephone CResfwood 2-3030 July 10, 1961 R.

June 24, 1965 Mr.

Rober t A.

September 21, 1964 David H.

December 19, 1969 W.

November 28, 1960 L.

June 6, 1967 P.

DEPARTMENT OF APPLIED MATHEMATICS AND COMPUTER SCIENCE SCHOOL OF ENGINEERING AND APPLIED SCIENCE June 18, 1968 Robert A.

DEPARTMENT O F PATHOLOGY UNIVERSITY O F CINCINNATI MEDICAL CENTER CINCINNATI GENERAL HOSPITAL CIN CIN N A TI.

Dtcember 4, 1961 Gujarati Type foundry Gaiwadi - Girgaon Bombay 14 INDIA Gentlemen: A letter from a representative of your organization (name indecipherable from signature) dated November 11th and addressed to The Secretary of the American Medical Association, concerning the potential hazard from a lead alloy used in type casting in your foundry, was forwarded to me with the request that I reply.

STATE OF CALIFORNIA--HEALTH AND WELFARE AGENCY DEPARTMENT OF PUBLIC HEALTH 2151 BERKELEY WAY BERKELEY 94704 February 21, 111, RONALD REAGAN, Governor Mr.