Typescript letter written on Lilly Research Laboratories letterhead and signed by G. H. A. Clowes. Makes a pitch for an extension of the agreement between the Eli Lilly Co. and the University of Toronto. Mentions the pricing of Iletin, publication of articles on the use of insulin, and the standardization of insulin. Again brings up the topic of the use of the name Iletin. Dr. Clowes had sent a telegram to Dr. Macleod alerting him to the existence of this letter.