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STATE DEPARTMENT of HEALTH of KENTUCKY A.

- Correspondence, etc N29509 University of Cincinnati Department of Preventive Medicine and Industriai Health Cincinnati 19, Ohio Attention: Robert A* Kehoe, M.

THE ASSOCIATED ETHYL COMPANY LIMITED NORTHWICH CHESHIRE ^ Telephone; NORTHWI CH 2237.

; t THE OHIO STATE UNIVERSITY De pa r t m e n t o f Pr e v e n t iv e Me d ic in e 410 W e s t 10t h Av e n u e Co l u mb u s 10, Oh io R o b e r t L.

Marcai 7, 1040 Or# Spaur iroire 2 Rue Borii?

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J y January 30, 1320.

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ETHYL CORPORATION loo PARK AVENUE BUILDING AT 41st STREET NEW YORK IT, N.

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