UCD History HubArthur Griffith, Sinn Fein and the IRB (The Irish Revolution Lecture 3) podcast, 2014
RTE Century Ireland Introducing de Valera – The East Clare by-election and the rise of an Irish political leader open_in_new article, 2017
Decade of Centenaries timelineIrish Delegation travels to London July 1921 photograph, July 1921
National Archives UK Cabinet Memorandum. The Irish Situation. open_in_new document, 30 May 1922