YouTube - RTEWhy did Edward Carson not become Northern Ireland’s Prime Minister? video clip, 2021
YouTube - RTEWhat role did sectarianism play in the creation of Northern Ireland? video clip, 2021
National Archives UKIrish Settlement: Proposals of the British government open_in_new document, 20 July 1921
Google Arts and CultureMemorandum from Arthur Griffith to de Valera on Ulster open_in_new document, 8 November 1921
National Portrait GalleryThe Mad Bull (James Craig, 1st Viscount Craigavon; Michael Collins) cartoon, 15 February 1922