Document QKjJpxKawV7aq4wpQYYeb6R8

FEDERAL SECURITY AGENCY U.S. PUBLIC HEALTH SERVICE Washington 25 D.C. March 10, 194-8 Mr. E. L. Shea President, Ethyl Gasoline Corporation Chrysler Building 4-05 Lexington Avenue New York, New York Dear Mr. Shea; For your information I am enclosing a copy of a letter received from the Director of the Aviation Medical Service, Civil Aero nautics Administration, and the Surgeon Generalfs reply, which are self-explanatory. Sincerely yours. (signed) J.G. Townsend, Medical Director Chief, Industrial Hygiene Division JGTimlt kE" 0003285