Letter to Katharine Stone Crowell Cushing, April 15, 1913
Letter to Grace Revere Osler, May 9, 1913
Letter to William Osler, August 3, 1911
Letter to William Osler, June 3, 1908
Letter to Henry Phipps, May 10, 1907
Letter to William Sydney Thayer, (January 8, 1907 ?)
Letter to Harvey Cushing, June 28, 1920
Letter to James William White, (February 2, 1906 ?)
Letter to Lewellys Franklin Barker, (February 2, 1906 ?)
Letter to William Osler, December 13, 1906