Letter to William Osler, May 23, 1914
Letter to John Young Walker MacAlister, May 20, 1914
Letter to John Young Walker MacAlister, (ca May 20, 1914)
Letter to William Osler, May 20, 1914
Letter to Mabel Brewster, April 22, 1914
Letter to William C. Gorgas, March 14, 1914
Letter to William Osler, September 29, 1913
Letter to Editor of the London Times, August 13, 1913
Letter to Henry Barton Jacobs, August 5, 1913
Letter to William Osler, July 17, 1913