Letter to Jennette Osler, May 25, 1867
Letter to Nona Gwyn, 1899
Letter to Charlotte (Chattie) Osler (Mrs. Charles Gwyn), May 16, 1920
Letter to Grace Revere Osler, August 28, 1921
Letter to Francis John Shepherd, July 15, 1921
Letter to Lewellys Franklin Barker, August 31, 1921
Letter to Ethel Bovell Barwick, July 22, 1921
Letter to Henri Amédée Lafleur, July 10, 1922
Letter to E.E. Tyzzer, July 15, 1922
Letter to Simon Flexner, August 23, 1922