Letter, 9 February 1901
Letters, 1901
Letters, 1901
Letter, 23 February 1901
Letter, 15 February 1901
Letter, 20 January 1901
Letter, 18 January 1901
Letter, 21 August 1900
Letter, 12 December 1900
Notes relating to biography of Sir William Dawson
Letters on Alaska Boundary, 1889-1900