Document 2R7Jdn99v5q4MXgQOQyyLzNq5

ETHYL CORPORATION lOO PARK AVENUE BUILDING AT 41st STREET NEWYORK 17, N. Y. May 26, i960 Robert A. Kehoe, M. D. University of Cincinnati The Kettering Laboratory Eden Avenue Cincinnati 19, Ohio Dear Dr. Kehoe; Your proposal of May 23 for the precise form of the lead warning sign FOR USE AS A MOTOR FUEL ONLY CONTAINS LEAD ANTIKNOCK COMPOUNDS is entirely satisfactory to Ethyl Sincerely yours, GFK:JC cc; Mr. W. R. Perdue Mr. M. Pi Murdock Mr. F. P; Warne F OG03IO