National Portrait GalleryThe Mad Bull (James Craig, 1st Viscount Craigavon; Michael Collins) cartoon, 15 February 1922
UCD Digital LibraryGroup of IFS Army soldiers firing artillery on the Four Courts photograph, 28 June 1922
Flickr - NLIMilitary carrying out official reprisal following an ambush in Meelin, Co. Cork photograph, January 1921
National Museums IrelandThomas Ashe – Easter Greetings, 1918 / Easter card postcard, Easter 1918
Decade of Centenaries timelineSir Edward Carson’s souvenir parchment of the Ulster Covenant document, 28 September 1912