Northern Ireland 1921-1925: a state of emergency
open_in_newThe Origins of Northern Ireland
,
Google Arts and Culture
Memorandum from Arthur Griffith to de Valera on Ulster
open_in_newdocument, 8 November 1921
History Ireland
Tit-for-tat: the War of Independence in the northern counties
open_in_newarticle, 2012
National Archives UK
Letter from Sir James Craig to the Prime Minister
open_in_newdocument, 29 July 1921
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
Houses of Oireachtas
Correspondence between de Valera and Lloyd George
open_in_newdebate, 14 September 1921
Hathi Trust Digital Library
The struggle of the Irish people. Address to the Congress of the United States
book, January 1921