BBC - Story of IrelandStory of Ireland: James Craig and the Catholic Minority open_in_new video clip, 2014
National Archives UK Letter from General Smuts to Eamon de Valera open_in_new letter, 4 August 1921
Bicycles, Barracks & BandoliersMemo regarding Catholic recruitment in the RUC and USC memo, March 1922
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
Flickr - NLIMilitary carrying out official reprisal following an ambush in Meelin, Co. Cork photograph, January 1921