Letter, 2 January 1840
Letter, 11 April 1844
Letter, 30 June 1848
Letter, 16 December 1907
Letter, 26 May 1884
Letter, 5 December 1899
Letter, 20 September 1917
Letter to William Osler, ( June 1908 ?)
Letter to William Osler, June 18, 1908
Letter to William Osler, February 22, 1900