June 6, 1928 Mr.

I 912 Broadway Bayonne N.J.

MEDICAL DEPARTMENT O c c u p a t i o n a l Me d i c a l S e r v i c e CAMBRIDGE.

o rS E A S E S rfif.i A L JH ETALTiH RUTHERFORD T. .JOHNSTONE, M.D. .

April 29, 1971 Mr.

March 24, 1959 Dr.

November 1, 1967 Philip H.

K 0RT AX INVESTIGATION OF THE POTENTIALITIES FOR TEE ABSORPTION OF LEAD BA THE USERS OF A 'LEAD-CONTAINING' HAIR DYE An Experiment Y/herein Human Subjects Applied a Representative Formulation in Simulation of the Scheduled Use of !

ETHYL CORPORATION RESEARCH AND DEVELOPMENT DEPARTMENT RESEARCH LABORATORIES 1600 WEST EIGHT MILE ROAD FERNDALE 20, DETROIT, MICHIGAN July 28, I960 Dr.

December 16, i960 MEMORANDUM : TO: Staff of The Kettering Laboratory Upon Mr.

N ovem ber IS, 1954 D r.

ETHYL CORPORATION INTER-OFFICE CORRESPONDENCE TO Dr.

October 16, 1347 Mr.

April 9, 1962 :`.r .

October 11, 1963 Henry E.