November 21, 1942

GENERAL in s t r u c t io n s f o r s u b je c t s Q ?

April 20 1935 Mr* D.

April 13# 1955 Dr Phillip Drinker Harvard School of Public Health 35 van Dyke Street Boston, Mass Dear Doctor Drinkers Thanks for your letter of March 27th* I shall be pleased to have the articles appear as you have in dicated in the September and November Issues of the Journal of Industrial Hygiene, In accordance with your request* I am getting together the material on the method which I should be very glad to present, I* too, felt it was wise to pub lish the method even though it has appeared formerly, and I omitted it only because the length of the papers mad me feel that it would be difficult to have them accepted for publication I shall send you the copy on the method shortly, at which time I will indicate where I would like to h&v it go and will note certain slight alterations in the references which should be mad as a result of its inclusion to any material, I neglected to mention In my letter accompanying the papers, that I hope eventually to get together a monograph In which I shall wish to make use of most, if not all, of the material of these papers# I should Ilk to reserve the right to make us of the material for this purpose, ' I am sending you herewith another article which is properly to be grouped with the four papers which I have sent yon, sine It is the logical sequence in the application of our data to the industrial problems Involved In lead compounds.

Esso Resear c h and Eng ineer ing Gompany {FORMERLY STANDARD OIL DEVELOPMENT COMPANY') P.O.Box 45, Li n d e n .

September 7 , 1)U0 ,'Dr.

V 3m 28 , 193?

IN TER - O FFIC E CO RRESPO N D EN C E Et h y l Ga s o l i n e Co r po r a t io n Ch r y s u i B u il d in g -IOS Le x i n g t o n Av e n u e N e w Yo k k June 7, 1937 Dr* Robert A Kehoe My dear Bobt With further reference to your letter of May 24th, I enclose copy of Report CR-20 in v/hich there are a number of analytical data giving the amounts of lead in crankcase oil.

Et hyl Gasol ine Corporat ion Ch r y s l e r Bu il d in g 403 Le x in g t o n Av e n u e Gr a h a mEd g a r DIRECTOR OF RESEARCH A p ril 27, 1936 Dr R o b ert A Kehoe U niversity of C incinnati College o f M edicine C incinnati Ohio ' My d e a r Kehoes I n accordance w ith y o u r l e t t e r o f A p r il 1 7 th , I am sen d in g you under s e p a ra te cover 123 co p ies o f th e p aper on Normal Lead to g e th e r w ith 139 c o p ie s P a r t 1 o f t h e t e t r a e t h y l le a d i n v e s t ig a ti o n and two copies o f th e Bureau o f Mines Report I th in k your preface and contents are e x ce lle n t and i t w ill be f in e t o h a v e a l l o f t h i s m a te r ia l to g e th e r i n one p o i n t .

/ Gr a h a m Ed g a r IRECTOR OF R ESEARCH Et hyl Gasol ine Cor por at ion - .

February 3, 1930 O r .

/( February 12 , 1930 There, are two possible defenses,, without consid ering any strictly legal and technical matter9 of whleh 1 have no knowledge.

A p r il 14, 1956 D r .

T h is is a fast message unless its deferred chat beer is indicated by th e proper sym bol.

ETHYL CORPORATION RESEARCH LABORATORIES 1600 WEST EIGHT MILE ROAD FERNDALE 20 DETROIT, M ICHIGAN c c : H.