Scope and Contents In Ledermann's letter to Thomson, dated 25 Apr 1939, he informs Thomson of his applying for the Carnegie Teaching Fellowship, which would allow him to undertake original research in the areas of pure matrix algebra and abstract group theory. He also mentions that he would like to devote some time to applied mathematics, specifically factor analysis, and asks Thomson for permission to continue the work he undertook as Thomson's assistant, perhaps with the help of...