History HubDiarmaid Ferriter discusses the Anglo Irish Treaty (Full Interview) video clip, 2020
YouTube - RTEWhat role did sectarianism play in the creation of Northern Ireland? video clip, 2021
National Archives UK Cabinet Memorandum – Ireland (Draft Constitution) open_in_new document, 1 June 1922
National Archives UK Cabinet Memorandum. The Irish Situation. open_in_new document, 30 May 1922