National Museums Ireland
Howth Gun Running, 1914
Photograph, 26 July 1914
National Archives UK
Irish Settlement: Proposals of the British government
open_in_newdocument, 20 July 1921
Google Arts and Culture
Memorandum from Arthur Griffith to de Valera on Ulster
open_in_newdocument, 8 November 1921
National Archives UK
Cabinet Memorandum – Ireland (Draft Constitution)
open_in_newdocument, 1 June 1922