Letter to William Osler, April 29, 1915
Letter to William Henry Howell
Letter to William Darrach, January 16, 1893
Letter to W.H. Howell, October 23, 1902
Letter to W.H. Howell, May 30, 1904
Letter to W.H. Howell, May 20, 1901
Letter to W.H. Howell, May 14, 1904
Letter to W.H. Howell, March 20, 1902
Letter to W.H. Howell, March 15, 1903
Letter to W.H. Howell, June 2, 1904