Letter to Henry Barton Jacobs, August 19, 1910
Letter to John H. Musser, August 21, 1888
Letter to Charles Nicoll Bancker Camac, December 15, 1906
Letter to Mrs. Charles Daniel Parfitt, December 20, 1906
Letter to Frederick T. Gates, May 2, 1907
Letter to Henri Amédée Lafleur, July 3, 1898
Letter to William Sydney Thayer, September 1898
Letter to John H. Musser, 1900
Letter to Mrs. Henry P. Bowditch, May 11, 1913
Letter to Edward F. Milburn, December 16, 1906