YouTube - RTEWhat role did sectarianism play in the creation of Northern Ireland? video clip, 2021
British Academy Political History of Northern Ireland since Partition open_in_new Article, 1999
Documents on Irish Foreign Policy Notes of a conference with the Irish Boundary Commission open_in_new document, 3 December 1925
Bicycles, Barracks & BandoliersMemo regarding Catholic recruitment in the RUC and USC memo, March 1922