UCD History HubAftermath of The Rising and 1917 By-Elections. (The Irish Revolution Lecture 5) podcast, 2014
National Archives UK Letter from General Smuts to Eamon de Valera open_in_new letter, 4 August 1921
Google Arts and CultureInstructions to Plenipotentiaries from Cabinet open_in_new document, 7 October 1921