Irish poet Nuala Ní Dhomhnaill's life and work, particularly her writing, study, and teaching of the Irish language and Irish folklore, are documented through her papers. Materials include correspondence; diaries and journals; manuscripts of poetry, prose, play and radio scripts, and short stories; photographs; research files; and works by other authors. Much of the material is in the Irish language.

Collection is open for research. Series IX contains family, financial, and professional documents marked confidential; these are not available for research.