Letter to William Osler, April 29, 1915
Letter to William Osler, August 14, 1915
Letter to William Osler, July 25, 1915
Letter to William Osler, July 15, 1915
Letter to William Osler, June 30, 1915
Letter to William Osler, May 5, 1915
Letter to William Osler, May 8, 1915
Letter to William Osler, March 11, 1915
Letter to William Osler, March 6, 1915
Letter to William Osler, (January 1915 ?)