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mm mmm LI A 09978 LEAD INDUSTRIES ASSOCIATION 0 m uxuerroM a v c n m NBW VOMR IT, M.

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RimniNn t h f nrFAKi r r in n f r i^i H v* ' ' I DUPONT AMERICAN INDUSTRIES 71 i j For the convenience of buyers considering the purchase of any Du Pont product, and desiring specific information, this coupon is printed.

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3 i i t- Lead Industries Association, Inc.-- m MeOWon Avenue Nee Yo<t.

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Boston, Bassachusotts February 5th, 1942 2. 2* Evans, Medic?.!

ETHYL CORPORATION RESEARCH AND DEVELOPMENT DEPARTMENT RESEARCH LABORATORIES 1600 WEST EIGHT MILE ROAD FERNDALE 30, DETROIT, MICHIGAN October 30, 1962 Dr.

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Th e Sh e p p a r d a n d En o c h Pr a t t Ho s p it a l H.

( ) \ J The H ilto n -D a v is Company 3-9^!