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I am enclosing herewith copy of letter from Smith Kline and French concerning synthetic tetrahydrocannabinols in which they are interested, together with a copy of my reply. When I have further information about these materials I will communicate with you again.

I am also including Document CRDLR 3051 which you so kindly sent me.

Kindest personal regards,

Yours very sincerely,

2 Harris Isbell, M. D. Director

H:rn

Enclosures Cy 1tr dtd 4/24/61 Document

B-350

193

Nadea ladru of Meaud Heath Addketloa Rescates Ceater U.S. Pablie Hrahà Seavice Hoaplual Leriogtot, Laaçaesy

DEPARTMENT OF HEALTH, EDUCATION, AND WELFARE

PUBLIC HEALTH SERVICE

27 April 1961

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