Letter to Henry Vining Ogden, September 23, 1889
Letter to William Osler, December 1889
Cushing's notes, 1888-1890
Letter to Charlotte Osler, April 1, 1890
Letter to Harry Toulmin, May 21, 1890
In Memoriam, Dr. John Hewetson, 1867-1910, 1910
Letter to Walter Baumgarten, October 3, 1890
Letter to Joseph Leidy, November 29, 1890
Notes taken from Osler's diary, 1891
Osler's notes, December 30, 1904