October 22, 1963 Mr.

April 11, 1969 Mr.

D EPAR TM EN T O F H E A LTH , ED U CATIO N, AND W ELFAR E FOOD AND DRUG ADM INISTRATION WASHINGTON.

December 7* 1961 Mr.

F ab ruary 26, 1965 R.

THE ASSOCIATED OCTEL COMPANY LIMITED ELLESMERE PORT, CHESHIRE Head Of f ice: 20 Berkeley Square, London, W ./ TELEPHONE: E L L E S M E R E P O R T 3611 TRUNK DIALLING: 0 5 1 E L L 3611 TELEX NO. 62384 rDr.

THE,ASSOCIATED OCTEL COMPANY LIMITED (Formerly The Associated Ethyl Company Limited) M ED I CAL SERV I CES ELLESMERE PORT, CHESHIRE Head Office : 2 0 Ber k eley Square, London, W .

February 27, 1963 Mr.

GENERAL OFFICES 2501 HUDSON ROAD ST.

November 15, 1960 Mr.

a division of RITTER PFUDLER CORPORATION ROCHESTER, N Y 14603 (716) BE 5-1000 December 19, 1966 Dr.

Standard Oil Company Mew JerseyINCO RPO RATED IN 30 R O C K E F E L L E R PL A Z A , N EW Y ORK 20, N EW YO R K M edical Depar t men t F eb r u ar y 23, 1961 D r.

N o v e m b e r 3, 1964 D r.

March 23, 1964 Re: Claim #63071596 W.

J.