
National Portrait Gallery
The Mad Bull (James Craig, 1st Viscount Craigavon; Michael Collins)
cartoon, 15 February 1922
UCD Digital Library
Group 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_newdocument, 30 June 1922
History Ireland
Tit-for-tat: the War of Independence in the northern counties
open_in_newarticle, 2012
Documents on Irish Foreign Policy
Heads of agreement between the provisional government and the government of Northern Ireland
open_in_newdocument, 30 March 1922

Bicycles, Barracks & Bandoliers
Memo regarding Catholic recruitment in the RUC and USC
memo, March 1922
Decade of Centenaries timeline
Ballytrain RIC barracks captured and sacked by the IRA.
photograph, 1920