Document gDrR54JY69GKVRno2DwbB8w6a

ETHYL CORPORATION 100 PARK AVENUE BUILDING AT 41s t STREET NEW YORK 17, N. Y. April 9, 1956 Dr. Lanson Blaney Medical Director Su b Oil. Ccnpany,,. ' -r-hiladelpEia"3', Pa. Dear Dr. Blaney: Thank you for your letter of April 7th. Separately ve are sending you a copy of our brochure titled "Laboratory Use of 'Ethyl' Antiknock Compound - Experimental AK-33X" in accordance with your request. ie are sending a copy of your letter to Dr. ft. A. Kehoe in Cincinnati. He is in a position to advise you regarding the toxicological properties of AK-33X. Yours very truly, y H. K. Ball, Manager Product Service & Safety HKBieas cct/ Dr. B. A. Kehoe K* 0018317