Letter to Katharine Stone Crowell Cushing, May 2, 1913
Letter to Katharine Stone Crowell Cushing, April 15, 1913
Letter to Henry Phipps, May 10, 1907
Letter to William Sydney Thayer, (January 8, 1907 ?)
Letter to James William White, (February 2, 1906 ?)
Letter to Lewellys Franklin Barker, (February 2, 1906 ?)
Letter to C.N.B. Camac, August 14, 1904
Letter to Charles Ferdinand Martin, September 28, 1904
Letter to Henry Vining Ogden, July 15, 1904
Letter to Charles Ferdinand Martin, July 15, 1904