Hathi Trust Digital LibraryThe struggle of the Irish people. Address to the Congress of the United States book, January 1921
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
Google Arts & CultureWar News No.3- Anti-Treaty Newsletter open_in_new newsletter, 30 June 1922