Consists of reviews, a clean copy typescript, a clean copy setting proof and a clean copy set of illustrations relating to the poetry collection Night Train.

Consists of manuscript and typescript drafts of Sean O'Brien's published and unpublished work, as well as articles and press cuttings relating to his work. Also includes O'Brien's personal notebooks from 1970 onwards, correspondence from and to O'Brien in both a personal and professional context, and miscellenous material relating to his cultural roles and activities including jobs, residencies and fellowships.

Consists of letters and proofs relating to the published poetry works of Sean O'Brien.