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
Houses of OireachtasCorrespondence between de Valera and Lloyd George open_in_new debate, 14 September 1921
Flickr - NLIMilitary carrying out official reprisal following an ambush in Meelin, Co. Cork photograph, January 1921
UCD History HubAftermath of The Rising and 1917 By-Elections. (The Irish Revolution Lecture 5) podcast, 2014
National Museums IrelandThe last letter written by Seán Mac Diarmada (Sean MacDermott) letter, 11 May 1916