Papers of Ernie O’Malley, 1916-1949; Field Message Notebooks belonging to Ernie O’Malley, as well as a notebook with lists of names of members of the British forces in Ireland, 1920-1921; File of GHQ Executive Meetings 1922-23 & Peace moves 1922-1923, includes ballads' containing memoranda and reports issued by the IRA Headquarters, and various divisional commands; including report on the inspection of Mountjoy Prison in October 1923, 1922-1923 & 1948; File of "RA G.H.Q. Dispatches 9-11-22, containing manuscripts, memoranda, reports and dispatches from both the IRA and Irish Free State Army Headquarters, 1922-1923; Folder of Executive Meetings of the IRA notes, 1922-1932; A file containing Intelligence summaries of the Royal Ulster Constabulary, 1924-1925; File of letters from Simon Donnelly to "Jim" [James Ryan] regarding his attempt to tunnel out of the Prison, 1922 August 17 & 29; Copies of meetings between the Irish Free State Government and the IRA army council, 1923.