Document 7MjGLG2vzyweNd5rVMw6nvBpR

COPY FEDERAL SECURITY AGENCY .S. PUBLIC HEALTH SERVICE . Washington 25 D.C. March 10, I9 I4S Mr. E. L. Shea President, Ethyl Gasoline Corporation Chrysler Building - 1+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" 0009285 N9998