JLai3 ANDREW FLETCHER,PRESIDENT K.

iem SmoOEistipi&mmMmtimm ANDREW FLETCHER.PRESIDENT K.

DEPARTMENT OF MEDICINE .SION OF IN D U S T R IA L HY GIENE UNIVERSITY OF COLORADO SC HO O L OF MEDICINE AND HOSPITALS <4200 E AST NI N T H AVE- DENVER, CLO.

June 18, 1958 (J D r.

January 31, 1957 A ir M ail D r.

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E TH YL COR POR ATION lOO PARK AVENUE BUILDING AT 41st STREET NEWYORK 17, N.

March 30, 1955 HNNECeetrhwwh.ryyYYAls*oolGire'kkKra.sBCoHuiltiiylnltdetninaCgcohrtporation Dear Mr.

4 November 9, 1950 Dr L T.

S S * ES TA B LIS H E S 1002 E.1.du Pont de Nemour s &Company IN C O R PO R A T ED Wil min g t o n 98, Del awar e ORGANIC CHEMICALS DEPARTMENT PETROLEUM CHEMICALS DIVISION September 23, 1959 . . c*/ Dr.

D ecem ber 18, 1956 \ N* M r.

i- fi ir January 26, 1959 Br.

Cleveland, Ohio May 12, 1955 Kettering Laboratory College of Medicine Eden Avenue Cincinnati 9> Ohio Gentlemen: Please send as soon as possible eight sterile containers for lead urine specimen to McGean Chemical, 2910 Harvard Avenue, Cleveland, Ohio* <*** Yours truly, Q /J R.

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