UCD History HubArthur Griffith, Sinn Fein and the IRB (The Irish Revolution Lecture 3) podcast, 2014
RTE Century IrelandSinn Féin leaders arrested over alleged ‘German plot’ open_in_new article, 2018
Decade of Centenaries timelineIrish Delegation travels to London July 1921 photograph, July 1921
National Archives UKLetter from Sir James Craig to the Prime Minister open_in_new document, 29 July 1921