Two MS letters issued on Óglaigh na hÉireann headed-paper, Limerick City Brigade, William Street Headquarters, Limerick, with details that Michael Rynne has been granted passage to Dublin for personal business. 29 Jun 1922

TS form document filled out by Michael Rynne, entitled "Nominal Roll of Officers - Dublin Command". Includes name, personal details, history of I.R.A. service, rank, unit and details of record of service.

File includes Form A.F.1. - Attestation Form, completed and signed by Michael Rynne detailing personal information, army career information and financial information. Also a copy of 'Training Memo no. 8 - Óglaigh na hÉireann - Duties of a Company Commander."

Correspondence, on Óglaigh na hÉireann headed papers, Castle Street, Castlebar, written by Captain Sean Walshe to 'Chief Liaison Officer', outlining details of raid at R.I.C. Barracks at Charlestown that was unofficial and unordered but led by a 'Vice-Comdt Hickey of an East Mayo Brigade Battalion. Reports detail the 'most atrocious manner' of the raiders and injuries to R.I.C. officers. Walshe seeks advice whether to arrest Hickey. (18 Jan 1922).
Further letters from Walshe include updates on local enquiries and investigations on the raid, possible mistaken identity on the raiding party and its leaders and other information. Also includes a manuscript report into the raid and its detail by Comdt Emmet Dalton. (19 Jan 1922)

File of manuscript letters sent to Michael Rynne from:
Niall MacNeill, 27 Sep 1922, thanking Rynne for condolences on recent family death.
James MacNeill, 3 Jun, 1926, first High Commissioner to London and second Governor-General of the Irish Free State.
Mary Rynne (Mother of Michael Rynne) 12 July 1921
Mary Rynne (Mother of Michael Rynne) Telegram to Michael, sent on 23 August 1922, the day after Michael Collins was killed, "To Staff Cap' Rynne, sincere sympathy with tragic news wire, Love Mother. (23 Aug 1922)
Also various telegrams and letters sent to Rynne with instructions about duties at Barracks based in Galway and Mayo.
MS letter from Barra O'Brien to Michael Rynne, 15 May 1965, attaching a press cutting of court proceedings event in which Dr. Michael Rynne Snr was mentioned.

File of manuscript letters sent to Michael Rynne from Dan Binchy, Ireland's ambassador to Germany from 1929 to 1932, and a cousin of Michael Rynne.

Manuscript draft report with final typescript version of Report of Organiser in 5th Battalion Area, West Clare Brigade, Óglaigh na hÉireann, prepared by Michael Rynne and submitted to the Director of Training (Emmet Dalton). Includes detailed information on each company under the West Clare Brigade, information on training, equipment, personnel, organisation, including remarks on company performance, members and leadership.

File includes manuscript-drawn map of region around Sligo and Fermanagh. with a number of towns marked and named. Note pf "plan" is inscribed. MS document entitled "Instructions to Subagents" and makes reference to instructions to those preparing for elections and voting logistics plans; Printed form od Statutory Declaration of Secrecy for mid-Antrim division, signed by the declarant, Patrick McFadden, Dec 1918. Also loose scraps of paper with names and adddresses of some individuals. Also includes photocopy of press cutting of letter written to the Irish Times by Michael Rynne, 16 Jul 1977, commenting on his experiences of lynching for "his candidate" in the Ballymena, Co. Antrim in 1918, when he acted as "personation agent" by impersonating the anti-Unionist Patrick McFadden.

Files of letters relating to Michael Rynne's involvement with the Department of External Affairs, Irish Free State; the League of Nations and correspondence with various figures in both Ireland and Europe involved and connected to European/Irish events.

MS letters between Michael Rynne from Tody [ ], based at 53 Lansdowne Road, Dublin.

File of message passed through and via the Irish Red Cross Society of Ireland from Nathalie Radiesse (Rynne) to Michael Rynne.