National Portrait GalleryThe Mad Bull (James Craig, 1st Viscount Craigavon; Michael Collins) cartoon, 15 February 1922
YouTube - RTEWhy did Edward Carson not become Northern Ireland’s Prime Minister? video clip, 2021
YouTube - RTEIreland 1912-1916: An Animated History from Home Rule to Easter Rising video clip, 2016
National Museums IrelandThomas Ashe – Easter Greetings, 1918 / Easter card postcard, Easter 1918
Decade of Centenaries timelineSir Edward Carson’s souvenir parchment of the Ulster Covenant document, 28 September 1912