YouTube - RTEWhy did Edward Carson not become Northern Ireland’s Prime Minister? video clip, 2021
History HubDiarmaid Ferriter discusses the Anglo Irish Treaty (Full Interview) video clip, 2020
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