File includes material relating to the background, funding, campaign, and project around The King Rory O'Connor Memorial Park and Museum project, Tuam, Co. Galway. Includes published booklet with information on the project; pamphlets and subscription/donation forms; press cuttings of news stories regarding the project; a printed document entitled "Memorandum on the Museum of Milling - King Rory O'Connor Park, Tuam, Co. Galway" (Sept 1972); Minutes of the Tuam Mill Museum Society, Museum Advisory Committee, 6 May 1974, 10 Mar 1975, 17 Oct 1975, , 27 Jun 1974, 6 April 1977; 17 Aug 1978; Memorandum on the King Rory O'Connor Project and the Carnegie Report, July 1974; printed invitation to the official opening of the The Miller's House and Exhibition entitled "Five Generations of Millers" at Tuam Mill Museum, 19 May 1980, officiated by Cardinal Tomas Ó Fiaich.
Also correspondence between Etienne Rynne and others such as Michael Flaherty, Team Captain, Christian Brothers' School, Tuam; Tony Claffey, and others involved with the project.

Research files, images, articles, correspondence and other material kept by Etienne Rynne concerning his reports on various excavations on the Aran Islands, in particular Dun Aengus.

File of manuscript notes by Etienne Rynne made on research on Inish Mór and Dún Aengus.

File of MS and TS correspondence to Etienne Rynne, also with some outward correspondence from Rynne, to various people and organisations, regarding Dún Aengus and Inish Mór. Includes letter between Rynne and Anthony Farrell of Lilliput Press, Dublin, re. publication of a chapter by Rynne on Dún Aengus (1991); Abbey Tipton of National Geographic Magazine (1996); The Society of Antiquaries, London (1991 - 1992); Letters to The Galway Advertiser and The Irish Times where Rynne responds and argues the recent press coverage regarding new archaeological claims regarding the use and function of Dún Aengus for ceremonial or military/defence means (1994); letter with attached article from Pat Sheeran (1991), and other related letters regarding Dún Aengus.

Manuscripts card and page of drawing/sketch of items related to a site at Ballyhaunis Golf Course, Co. Mayo. Excerpt of OS site map also included.

TS report by Etienne Rynne describing a souterrain discovered while ploughing near Shrule, Co. Mayo. Also includes correspondence between the land-owner and Rynne regarding the site.

File of MS research notes and colour photograph images of stone carvings at Doonferry, Co. Mayo.

File includes details manuscript notes and research by Etienne Rynne on the round tower at Balla, Co. Mayo. Includes black and white and also colour photographs of the tower and carved stones at the site. Also an essay written by Rynne on the round tower, along with sketches and note cards of information, also copies of excerpts of published work on round towers in Ireland.

Files relating to excavation sites in Co. Sligo.

File including report by Etienne Rynne on the seventh century iron sword found in Lung Riverm between Float Bridge, Creggane and Lough Gara, in the townland of Callow or Runnawillin, Co. Roscommon. Images and proofs of the sword image, published in the Old Athlone Society journal includes and also correspondence between Rynne and others regarding the find.