Letter, 26 December 1897
Letter to Mr. Provost, December 10, 1903
Letter to Arthur Thomson, December 26, 1903
Letter to Mr. Provost, December 10, 1903
Letter to Arthur Thomson, December 2, 1903
Letter to Sir John Burdon Sanderson, May 13, 1904
Letter to William Osler, September 26, 1904
Letter to A.J. Balfour, July 31, 1904
Letter to William Osler, October 19, 1904
Letter to William Osler, November 10, 1904