UCD History HubArthur Griffith, Sinn Fein and the IRB (The Irish Revolution Lecture 3) podcast, 2014
Decade of Centenaries timelineIrish Delegation travels to London July 1921 photograph, July 1921
Houses of OireachtasCorrespondence between de Valera and Lloyd George open_in_new debate, 14 September 1921
Google Arts and CultureMemorandum from Arthur Griffith to de Valera on Ulster open_in_new document, 8 November 1921