Letter to Harvey Cushing
Letter to Arnold Carl Klebs, January 12, 1906
Letter to Maude E. Abbott, January 13, 1906
Letter to Emanuel Libman, January 15, 1906
Letter to Maude E. Abbott, January 20, 1906
Letter to Gwendolyn Francis Andras, January 26, 1906
Letter to William Sydney Thayer, January 28, 1906
Letter to William Osler, January 16, 1913
Letter to James J. Walsh, January, 1906
Letter to Charles Nicoll Bancker Camac, January 29, 1906