RTE
Northern Ireland 1921-1925: a state of emergency
open_in_newarticle, 2021
National Archives UK
Irish Settlement: Proposals of the British government
open_in_newdocument, 20 July 1921
Houses of Oireachtas
Correspondence between de Valera and Lloyd George
open_in_newdebate, 14 September 1921
Google Arts and Culture
Instructions to Plenipotentiaries from Cabinet
open_in_newdocument, 7 October 1921