UCD History HubJohn Redmond’s Woodenbridge speech and the split in the Irish Volunteers podcast, c.2015
National Archives UK Letter from General Smuts to Eamon de Valera open_in_new letter, 4 August 1921
Hathi Trust Digital LibraryThe struggle of the Irish people. Address to the Congress of the United States book, January 1921
Warwick Digital CollectionsImage of Sackville Street after Rebellion in Dublin, April, 1916 booklet, April 1916
RTE Century Ireland Ireland’s Opportunity? The First World War & 1916 open_in_new article, 2016