Letter to Francis John Shepherd, December 13, 1905
Letter to Emanuel Libman, May 17, 1910
Letter to William Osler, December 1, 1910
Letter to John Alexander Nixon, June 24, 1912
Letter to William C. Gorgas, December 31, 1913
Letter to Frederick Cheever Shattuck, November 29, 1905
Letter to Henry Barton Jacobs, December 1, 1910
Letter to Charlotte (Chattie, Mrs. Charles Gwyn) Osler, June 21, 1911
Letter to William Sydney Thayer, December 31, 1913
Letter to John Young Walker MacAlister, December 18, 1911