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
BBC - Story of IrelandStory of Ireland: James Craig and the Catholic Minority open_in_new video clip, 2014
Decade of Centenaries timelinePeace vigil: groups of women and youths saying the rosary photograph, 1921
Hathi Trust Digital LibraryThe struggle of the Irish people. Address to the Congress of the United States book, January 1921