Et h y l Ga s o l i n e Co r p o r a t i o n Ma n u f a c t u r in g a n d Tr a f f ic De pa r t me n t INTER-OFFICE CORRESPONDENCE PLEASE ADDRESS REPLY TO5-CHRYSLER BUILDING 4 0 5 LEXINGTON AVE.

J-n crCERT HURTIN HALSEY, M.

October 26, 1931 Dr.

H .G.

March 27, 1935 My d e a r D r .

October 12, 1 9314- Dr.

COINRTREESRP-OONFDFIECNECE Et hyl Gaso l ine Corporat ion Re s e a r c h La bo r a t o r ie s 723 East Mil waukee Avenue Det r oit ,Michigan Ju n e 2 6 , 1939 Dr .

,October 10 1934 Mr, C.

HARVARD UNIVERSITY / SCH OOL OF PUBLIC H EALTH D e F AKT U ZN T OF I D U I T [ AL HYGIENE i i Shattuck Street 'Boston , ^ M assachusetts December 10, 1938 Pi** Robert A.

a . b .e .

CC Mr, A. e * M i ttnacht i/ 3r.

Decem ber 22* 1936 Mr.

CO fetr.

Th e A n a c o n d a Co mpa n y P.O.

Et hyl Ga so l ine Co r po r at io n Chr ysl er Buil ding 135East 42*iPSt r eet N e w Y o r k April 5, 1934.