Letter to John H. Musser, August 21, 1888
Letter to William Sydney Thayer, August 23, 1896(?)
Letter to John George Adami, July 1898
Letter to Henri Amédée Lafleur, July 3, 1898
Letter to William Sydney Thayer, September 1898
Letter to Daniel Coit Gilman, July 2, 1898
Letter to William Sydney Thayer, 1900(?)
Letter to John H. Musser, 1900
Letter to Charles Nicoll Bancker Camac, December 15, 1906
Letter to Mrs. Charles Daniel Parfitt, December 20, 1906