April 18,-1955 Dr.

FELIX EDGAR WORMSER,PRESioeNT K.

M arch 5, 1956 M r.

October 29, 1954 Mr.

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ETHYL CORPORATION IOO PARK AVENUE NEW YORK, NEW YORK V September 17, 1959 TO ALL REGIONAL MANAGERS , ' COPY FOR ___________ ___________ .

DEPARTMENT OF CHEMISTRY CHARLES A.

Up SHELL OI L COM PANY P.

IN D U S T R IA L H Y G IE N E F O U N D A TIO N OF A M E R IC A , INC.

^ u a t bd z in g c o r po r a t io n l im it e d L O N D O N . - W .l Dr.R.A.Keh oey Ket t er in g Laboratory, Un iver s it y o f C in cin at t i, Eden Avenue, C in e in at t i.

fj*HYS IC IANS AND SURGEONS I '' INDUSTRIAL EUIIES 1313 N.W. 19TH AVENUE PORTLAND 9.

Exposure to Lead - Kehoe Recognition and prevention of Lead Poisoning - Kehoe A CritiqalAppraisal of Current Practices in the Clinical Diagnosis of Lead Intoxication - Kehoe June 8, 1956 Mr.

\ ETHYL CORPORATION RESEARCH AND DEVELOPM ENT DEPARTMENT R E SE A R C H LA BO R A TO R IES 1 6 0 0 W EST E IG H T M ILE ROAD FE R N D A L E 2 0 , DETRO IT, M ICHIGAN May 18, 1959 Dr.

Socony Mo bil O i l C o m p a n y , In c.

ill Ti CHNI CAl CENTER RESEARCH STAFF GEM ERAI M OTORS CORPORATION BOX 188, NORTH END STATION DETROIT 2, M ICHIGAN A ugust 20, 1956 D r.