If NEW PLANT EQUIPMENT Adjustable Port Valvss E415 manufacturer to give uniform feed of'Kgl materials.

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February 9, 1944 1-j Mine Safety Appliances Company, Braddock, Thomas and Mead Streets, Pittsburgh, Pennsylvania.

ETHYL CORPORATION INTER-OFFICE CORRESPONDENCE^ TO Dr.

October 3 0 , 1942

ED I TORI AL D EPARTMENT EDITOR MORRIS F1 SHBEIN, M.D.

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August 22, 1944 19 M r .

UNIVERSITY OF CINCINNATI CINCINNATI 1 9 .

September 22# 1942 Mr.

T h e El e c t r ic St o r a g e Ba t t e r y Co m p a n y ALLEGHENY AVE. and 19TH ST., PHILADELPHIA Exie \ BATTERIES5, J * Robert A.

Professor ofNtfedicine, 0.