KETTERING LABORATORY EDEN AND BETHESDA AVENUES CIN CIN N A TI, O H IO 4 S 2 I 9 UNIVERSITY O F CINCINNATI COLLEGE O F MEDICINE DEPARTMENT O F ENVIRONM ENTAL HEALTH April 22, 1968 Dr.

April 18, 1962 Gilbeart H.

January 20, 1969 Professor Ronald .

October 22, 1968 Mr.

DEPARTMENT OF HEALTH, EDUCATION, AND WELFARE FOOD AND DRUG ADMINISTRATION W A SH IN G T O N , D .C . 20204 September 28, 1967 Dr.

May X, 1969 George Roush, Jr., M.D., Medical Director Ethyl Corporation Laboratory of Environmental Medicine 1700 Perdido Street New Orleans, Louisiana 70112 Dear George: Z am grateful to you for your comments on the paper prepared for publication in the Journal of APCA, and I shall take them carefully into account In making such final revisions as may seem appropriate.

July 8, 1963 Miss G.

October 27, 1964 Lewis M.

J.

December 23, 1963 Mr.

July 21, 1961 Mr.

ETHYL CORPORATION INTER.

/ TELEPH O NE MU 1965 ETHYL CABLE ADDRESS : " E T H Y L P O R T " ALAN C.

March 1, 1965 Christopher C.

INSTITUTE OF CHILD HEALTH U n iv er sit y o f Lo n d o n D i r e c t o r * N u PFteLo p r o f c sso r 0 * c h i l d H e a l t h .