Letter to Hackett (Yale University), July 3, 1913
Letter to Hinsdale, July 17, 1919
Letter to Hythe, May 29, 1914
Letter to Iveagh, December 7, 1914
Letter to Lapp, October 3, 1919
Letter to London Times, December 7, 1909
Letter to Maurice Debove, June 5, 1914
Letter to Mott, January 30, 1915
Letter to Northcliffe, January 22, 1915
Letter to Oxford Mayor, May 1, 1919