Decade of Centenaries timeline
Civilians in Belfast being searched by police
photograph, 13 March 1922
Documents on Irish Foreign Policy
Heads of agreement between the provisional government and the government of Northern Ireland
open_in_newdocument, 30 March 1922
National Archives
Home Rule : Government of Ireland Amendment Bill
open_in_newdocument, 23 April 1918

Bicycles, Barracks & Bandoliers
Memo regarding Catholic recruitment in the RUC and USC
memo, March 1922
Hansard
Government of Ireland Bill Debate – Chief Secretary of Ireland
open_in_newdebate, 29 March 1920
Bodleian Library blog
100 years ago: Constitutional Crisis and the Parliament Act of 1911
open_in_newarticle, 2011