Letter to Charlotte Osler, November 30, 1892
Letter to Charlotte Osler, October 22, 1897
Letter to Charlotte Osler, September 19, 1891
Letter to Charlotte Osler, September 24, 1891
Letter to Charlotte Osler, September 3, 1890
Letter to Daniel Coit Gilman, July 2, 1898
Letter to Edward F. Milburn, December 16, 1906
Letter to Edward F. Milburn, June 7, 1909
Letter to Francis John Shepherd
Letter to Frederick T. Gates, May 2, 1907