Letter to Frederick T. Gates, May 2, 1907
Letter to John George Adami, (May 1907 ?)
Letter to William Osler, April 14, 1908
Letter to William Osler, (May 9, 1908 ?)
Letter to William Osler, July 13, 1908
Letter to Edward F. Milburn, June 7, 1909
Letter to Mabel Brewster, August 16, 1910
Letter to Henry Barton Jacobs, August 19, 1910
Letter to Mrs. Henry P. Bowditch, May 11, 1913