Youtube
The Ulster Solemn League and Covenant – BBC Documentary
TV programme, 2012
National Archives UK
Irish Settlement: Proposals of the British government
open_in_newdocument, 20 July 1921
National Portrait Gallery
The Mad Bull (James Craig, 1st Viscount Craigavon; Michael Collins)
cartoon, 15 February 1922
Documents on Irish Foreign Policy
Extract from statement by Michael Collins on Northern Ireland policy
open_in_newdocument, 4 February 1922
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