.

Jue 6, 1963 E.

April 29, 1969 P.S.I.

April 21, 1964 Miss Barbara B.

ETHYL CORPORATION RESEARCH AND DEVELOPM ENT DEPARTMENT R E SE A R C H LABORATORIES 1 6 0 0 W EST E IG H T M ILE ROAD FERNDALE 2 0 , DETROIT, MICHIGAN Ja n u a ry 25, 1962 D r.

\ Correspondence to 3 DA.YLESFOSD ROAD, GATLY 573a P R O F E S S O R R O N A L D E.

Cbu unit tee of the Pr ogr essive H air l/e Indust ry Ro o m 510-11, 60 E a s t 42n d St r e e t N e w Yo r k , N e w Yo r k 10017 M ember x Co m be Ch em ic a l .

STRICTLY CONFI DENTI AL MAY BE RELEASED ONLY BY DULY AUTHORIZED PERSONNEL ETHYL CORPORATION Inter-Office Correspondence To: Mr.

EDGEW O O D 4- 290 8 CABLE AD D RESS: W I FPO DEPARTMENT OF RES EA RCH G- D EV EL O PM EN T 1151 W EST FI FTH STREET AZU SA, CA LI FO RN I A September 28, 1960 Dr, Robert A.

February 11, 1969 P.8.X.

October 18, 1962 Air Mail Dr.

A m e r i c a n P e t r o l e u m In s t i t u t e 1271 AV EN U E OF TH E A M ERI CAS N e w Y o r k 2 0 .

T.R.A.BEVAN. 20 BERKELEY SQUARE LONDON,W1.

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January 10, 1966 ?