YouTube - RTEWhy did Edward Carson not become Northern Ireland’s Prime Minister? video clip, 2021
UCD Digital LibraryGroup of IFS Army soldiers firing artillery on the Four Courts photograph, 28 June 1922
History Ireland The Boundary Commission Debacle 1925, aftermath & implications open_in_new article, 1996
Documents on Irish Foreign Policy Notes of a conference with the Irish Boundary Commission open_in_new document, 3 December 1925