YouTube - RTEWhat role did sectarianism play in the creation of Northern Ireland? video clip, 2021
Documents on Irish Foreign Policy The Collins – Craig agreement open_in_new document, 23 January 1922
National Portrait GalleryThe Mad Bull (James Craig, 1st Viscount Craigavon; Michael Collins) cartoon, 15 February 1922
Documents on Irish Foreign PolicyHeads of agreement between the provisional government and the government of Northern Ireland open_in_new document, 30 March 1922
Documents on Irish Foreign Policy Michael Collins to James Craig (Belfast) open_in_new letter, 27 April 1922