Letter from William Osler, February 21, 1918
Letter from Sir John Burdon Sanderson, August 2, 1884
Letter from E.F. Smart, October 16, 1919
Letter from E.F. Smart, November 29, 1919
Cushing's notes, November 1, 1918
Cushing's notes, August 19, 1920
Cushing's notes, 1908
Circular letter, September 9, 1914
Arnold Toynbee