Letter to George H. Perley, July 1, 1919
Letter to William Osler, July 26, 1919
Letter, 21 June 1919
G.W.E. Russell
Letter from I.G. Gibbon
Letter from I.G. Gibbon
Letter to William Osler
Letter to William Osler, September 23, 1919
Letter to William Osler, September 23, 1919
Letter to Karl Friedrich Wenckebach, May 20, 1919
Letter to John George Adami, (ca May 1919)
Letter, 19 June 1919