File of letters from poet Robert Greacen to John McGahern. Includes comments on "The Power of Darkness", commenting that "every society is unwilling to face its problems/prejudices/intolerances." (31 Oct 1991); comments on McGahern's article on Bernard McLaverty in the Sunday Independent (20 Mar 1992) and that Greacen will be reviewing McGahern's "Memoir" for Books Ireland magazine.

File of MS letters from poet and critic Roger Garfitt, with samples of his writing for McGahern to comment on and also discussions and comments on McGahern's writing.

Manuscript letters from Roger McHugh, Professor of Anglo-Irish Drama, University College Dublin, to John McGahern, with discussion of short stories by McGahern, and also of McGahern's move to Colgate.

File of manuscript letters from Rosaleen McGahern to her brother John McGahern, and Madeline McGahern. The letters are personal is nature, relaying family and personal news and updates. The earliest letter of March 1961 is written from Leyton, London, and with plans on a visit by John and his sisters to meet in London, while updating that their father will not travel. LAter letters through the 1980s and 1990s update on the children of each sibling's households, arranging visits, family news and related updates. Occasionally John's writing and literary figures are mentioned.

Letters from various staff members at RTÉ including broadcaster Donncha Ó Dulaing (Head of Features and Current Affairs) arranging a recording time with McGahern (17 Sep 1971); Other letter from Ó Dulaing sets out recording schedule for McGahern's story "Swallows" (13 Sep 1971); Letter from P.J. O'Connor, Head of Radio Drama, inviting McGahern to write a radio play for a new season of radio plays by Irish writers (3 Mar 1980); Letter from Michael Garvey, thanking John and Madeline McGahern for their kindness recently and sending them a number of books.

File of manuscript and typescript letters and postcards from Seamus Heaney to John McGahern. The letters date from 1975 - 2005 and relate to personal and literary discussions. Included are eighteen letters, ten cards and postcards and two poems inscribed to the McGahern's, including "Catherine's Poem" and also "Ulster Twilight". The letters discuss various matters, from arranging for academic posts in the U.S., readings and events in Ireland and elsewhere, general comments on Irish writing
"It was one of the most enhancing times of my life" (Postcard, no date); "...to say how deeply the Granta "[The] Lanes" piece entered me" (12 Jan 2005), on dodging Bloomsday season (7 June 2001), McGahern's teaching at Colgate University, Heaney's own teaching work and related discussions.

Letters from Seamus O'Grady, Secretary to the Board for Extra-Mural Studies, UCG, in respect to payments for speaking at a writers' course and a talk to Cumann Éigse agus Seanchais.

Letters from Seán Ó Donmdháin, Rúnaidhe Priobhaideach, Oifig an Tánaiste, Tighthe an Riaghaltas, Baile Átha Cliath stating that the Tánaiste has searched both his offices and his house, but could not find a copy of the proceedings of the Árd-Fheis for 1918 [in Irish].

Correspondence between Sean T O Ceallaigh and Stiophán Bairéad. Seán T. Ó Ceallaigh was born in north inner-city Dublin and was active in the Gaelic League, becoming a member of the Governing Body in 1910 and the General Secretary in 1915. He went on to become Ceann Comhairle of the first Dail, He served as the Irish Republic's envoy to the peace talks at Versailles, seeking admittance. However, as France and Britain were allies this request was never going to succeed. He was later active in Fianna Fail, becoming the second President of Ireland, serving from 1945 to 1959.

Letters from Senator Joe O'Toole (and also Charlie McCreevy T.D., Minister for Finance) relating to efforts regarding pension payments from McGahern's time as a teacher.