Letter to William Sydney Thayer, January 8, 1913
Letter to William Sydney Thayer, January 8, 1914
Letter to William Sydney Thayer, July 7, 1908
Letter to William Sydney Thayer, May 30, 1905
Letter to William Sydney Thayer, January 6, 1915
Letter to William Sydney Thayer, July 10, 1915
Letter to William Sydney Thayer, January 24, 1917
Letter to William Sydney Thayer, January 16, 1916
Letter to William Sydney Thayer, July 2, 1910
Letter to William Sydney Thayer, August 14, 1914