THE WHITE HOUSE w as h in g t o n September 10, 1973 Dear Dr.

SUITE 401 1010 VERMONT AVENUE, N .W .

,January 27 1970 Katharine R.

Hay 27, 1975 Er Bli.

November 4, 1971 Lucien B.

DEPARTMENT OF ENVI RONMENTAL HEALTH KETTERI NG LABORATORY (513) 872* 5700 September 19, 1974 University o f Cin cin n a ti M e d ica i Ce n te r 3223 Eden Avenue Cin cinnat i, Oh io 4 5 2 6 7 Dr.

M ED I CA L D EP A R T M EN T B R O O K H A V EN N A T I O N A L LA B O R A T O R Y A SSO CI A T ED U N I V ER SI T I ES.

X Dr.

ri ETHYL CO:m.Y)RATION 0 ~~ A' i n t i-ik m-t i o : A-r To Br.

April 28, 1971 Mr.

September 23, 1971 P.

February 9, 1971 Mr.

May 17, 1973 Mr.

January 13* 1970 PERSONAL AND CONFIDENTIAL Mr.

I ORGAN I SATI ON DU T R A I T E D E L 'A T LA N T I Q U E N ORD N ORTH A T LA N T I C T R EA T Y ORGAN I Z ATI ON Division clcs 'cires Scientifiques Scientific .ficirs Division Dr.