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 Henri Amédée Lafleur, November 14, 1903
Letter to J.R. Chadwick, 1903
Letter to J.R. Chadwick, May 1903
Letter to Henri Amédée Lafleur, May 6, 1903