^Diaries of William Lyon Mackenzie King; 1926 (July 2), pg. 174 Accessed 11 May 2020
^"Relations with Foreign Countries, General Conduct of Foreign Policy," Imperial Conference, 1926; Inter-Imperial Relations Committee; Report, pg. 9 (PDF frame 10) Accessed 11 May 2020
^United States Department of State, "Approval by the United States of Proposal by the British Government for the Appointment of a Canadian Minister at Washington," Papers Relating to the Foreign Relations of the United States, 1926, pgs. 578-90 Accessed 8 May 2020
^"Minutes of Evidence" (May 1926), Select Standing Committee on Industrial and International Relations, pgs. 19-21 and 41-50 Accessed 20 October 2020