YouTube - RTEWhy did Edward Carson not become Northern Ireland’s Prime Minister? video clip, 2021
Decade of Centenaries timelineFire fighters extinguishing the flames, Messrs. William Campbell & Co photograph, 22 May 1922
UCD Digital LibraryGroup of IFS Army soldiers firing artillery on the Four Courts photograph, 28 June 1922
National Archives UK Cabinet Memorandum. Ireland – Capture of Four Courts. open_in_new document, 30 June 1922
Bureau of Military HistoryThe Minister of Defence orders that the Convention be not held newsletter, 31 March 1922