Letter to Henry Vining Ogden, July 15, 1904
Letter to James William White, (February 2, 1906 ?)
Letter to John George Adami, 1902
Letter to Henry Phipps, May 10, 1907
Letter to Jennette Osler, January 23(?), 1878
Letter to Lewellys Franklin Barker, (February 2, 1906 ?)
Letter to Katharine Stone Crowell Cushing, April 15, 1913
Letter to William Sydney Thayer, (January 8, 1907 ?)
Letter to Charles Ferdinand Martin, July 15, 1904
Letter to Charles Ferdinand Martin, September 28, 1904