Letter to Lewellys Franklin Barker, (February 2, 1906 ?)
Letter to Simon Flexner, April 20, 1917
Letter to William Osler
Letter to William Osler, April 20, 1917
Letter to William Osler, April 7, 1902
Letter to William Osler, August 19, 1918
Letter to William Osler, August 3, 1911
Letter to William Osler, (ca July 12, 1919)
Letter to William Osler, December 13, 1906
Letter to William Osler, December 19, 1918