RTE Century IrelandSinn Féin leaders arrested over alleged ‘German plot’ open_in_new article, 2018
Decade of Centenaries timelineCivilians in Belfast being searched by police photograph, 13 March 1922
Documents on Irish Foreign PolicyHeads of agreement between the provisional government and the government of Northern Ireland open_in_new document, 30 March 1922
Bicycles, Barracks & BandoliersMemo regarding Catholic recruitment in the RUC and USC memo, March 1922