Autograph draft of a letter, written on University of Alberta Department of Biochemistry letterhead in Collip's hand. These are pages 2 and 3, page 1 of this letter has not been found. In this draft, Collip outlines what he believes are his contributions to the early experiments with pancreatic extract. Collip wrote the letter and drafted his statement in response to a letter from Macleod, dated Sept. 18, 1922.