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27 April 1961

Dr. Gləmn E. Ullyot
Associate Director, "Research and Development Smith Kline and French Laboratories "
1500 Spring Garden Street
Philadeiphia 1, Pa.

Dear Dr. Ullyot:

Thank you for your letter of 24 Aprll 1961. I wlll be expecting you. When you koow your arrival time, let me know and I can pick you up at the airport.

I think perhaps we should wait on the sample of tetrahydrccannabinols you have untl we háve had a chazce to discuss the matter.

Is the i, 2-dimethyi hepto analog of tetrahydrocannabinol which you mentioned in your letter one of the compounds studied by Loewa? I should appreciate receiving the structaral formula.

I also hope Dr. Tedeşchi can send me his data prior to arrival here so I will have a chsnce to look it over.

Kindest personal regards,

Yours very sincerely,

Harris Isbell, M. D. Director

E:m

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