Papers relating to J.J.R. Macleod Correspondence from Macleod regarding the possibility of Kosterlitz joining his department in Aberdeen, 1933 - 1934; Macleod's typescript statement on the 'History of the Researches leading to the Discovery of Insulin', c 1923; obituary, 1935; resolution of appreciation issued by the University of Toronto, 1935; photographs, early 20th century; correspondence from Dr M.J. Williams regarding his biography of J.J.R. Macleod and the recent dedication of the J.J.R. Macleod Auditorium in the University of Toronto, 1990. 1920s - 1990