BBC Youtube
BBC’s: The Story of Ireland – Age of Nations
TV programme, 2012
National Archives UK
Letter from Sir James Craig to the Prime Minister
open_in_newdocument, 29 July 1921
Bicycles, Barracks & Bandoliers
Memo regarding Catholic recruitment in the RUC and USC
memo, March 1922
History Ireland
The Boundary Commission Debacle 1925, aftermath & implications
open_in_newarticle, 1996