File of manuscript letters from teacher and friend, Tom Jordan, to John and Madeline McGahern, with personal discussions, comments on Irish society, news and current events, visits to the McGaherns, comments on McGahern's writing, and wider general discussions. Letters are grouped and arranged by decade from the 1960s to the 2000s, with some letters with no date.

Letter and postcard from playwright Tom Murphy to John McGahern with comments on having seen his play, "The Power of Darkness " at the Abbey Theatre, describing it as wonderful and disagreeing with the negative Irish Times review of the play.

One letter and one postcard from poet Tom Paulin to John McGahern, sending good wishes and comments on "That They May Face The Rising Sun", and also making arrangements to meet a festival event in Oxford.

File of postcards, letters, and email from Tony Cartano, Francoise Cartano, Paris, to John McGahern. some items from Tony Cartano are on "Presses de las Renaissance" headed paper and also Albin Michel headed paper, both Paris-based publishers. The letters and cards detail some discussions around McGahern's books published in French through Albin Michel, the sales figures and distribution of works by McGahern and general discussions between all on literary matters.

Letters from Tristram Powell, B.B.C., discussing McGahern's work and related commentary on writing and B.B.C. work.

File of MS and TS letters to John McGahern from Frank Dolan (2006) with descriptions of growing up in Leitrim and of people and places in the area; from Bill Doheny (n.d.); Gerry Dukes regarding the GPA book prize for which McGahern was nominated and with details of the television ceremony to be attended by John Updike (1992) also letter thanking McGaherns for meeting with Dukes (2005); from Luke Dodd with comments after having read 'Memoir'; and from John Donegan (letters of 1988-1993) also a primary teacher and with details re. his own father being a Garda sergeant and who had a connection to Frank McGahern Snr.

File includes letters and email from Wilbur T. Albrecht, Professor of English, Colgate University, USA, to John McGahern, 1972 - 2003. Letters discuss academic matters at Colgate University, personal conversations between McGahern and Albrecht and respective families, travel plans, McGahern's teaching at Colgate. Also Albrecht discusses works by McGahern including The Leavetaking (3 May 1975); Amongst Women (18 Dec 1990). Latter letters (2003) including email from John McGahern to Janette [Albrecht] talks in detail of McGahern's cancer diagnosis and with details of treatment, etc.

File of letters complimenting Tim Robinson on his maps and writings on Aran.

File of letters of appreciation to Tim Robinson on his map of the Burren, many from people who contributed to its creation.

Three letters from Elena Tornow complimenting the map, and commenting on the interaction between the preservation of archaeological features and local agriculture practices.

Handwritten letter from Helena Feighen to Robinson enquiring about the criteria Robinson used to differentiate between burial sites and clearance cairns on his 1977 Burren map, and a carbon copy of Robinson's reply.

Unsigned letter to Robinson from an Archaeology graduate seeking permission to redraw versions of Robinson's map for a study of ringfort distribution on the Burren. Copy reply from Robinson granting permission.

File of copy letters to M M O'Shaughnessy offering their congratulations on his appointment as City Engineer of San Francisco. Correspondents are W J Farey, Ed L Head, C Eccles, Ford A Carpenter, A Moretti, G McM Ross, John E Pope, Emilie Sussman, M K Miller, Herman Shainwald, Charles D Martin, Thomas W Brooks, R C O'Connor, W A Whitney, Otto von Geldern, James P Morrissey, R S Buck, R S Moore, Frank McGowan, Victor Reiter, Charles E Wilson (5 copies), L B Nutting, A L Young, Walter V Bowns, J D Grant, Francis Smith, Ernest McCullough, W W Ricker, a copy of the Dedicatory Ceremonies to Commemorate the Completion of the Mission Viaduct, Henry Michaels.

Copy letter from O'Shaughnessy to Mr Stromberg, Photographer, (26 Oct 1912) requesting copies of a photograph. Copy letter to O'Shaughnessy from A S Baldwin (25 Aug 1913) complimenting him on his editorial in the Journal of Commerce in favour of the bond election, the influence it has exerted on his own position on the matter, but notes his opposition to municipal ownership of street railroads.