Papers primarily of Terence MacSwiney but relating to a proposed book by Etienne Beuque and a published biography by Moirin Chavasse, Terence MacSwiney (1961).

Material relating to the Volunteers (1914–20) including correspondence, notes, circular and printed matter; to Sinn Féin (1909–20) including correspondence with P.S. O’Hegarty, handbills and pamphlets; to Dáil Éireann (1919–20) including correspondence, notes, accounts and printed matter; to his period as Lord Mayor of Cork (1920) including correspondence, speeches and notebooks; and to his hunger-strike and death in Brixton Prison (1920) including some letters from MacSwiney, press releases, obituaries and newspaper cuttings. Photographs, poems and tributes to MacSwiney after his death and notebooks and diaries written by members of his family (1920–1). Correspondence and accounts of the Terence MacSwiney Memorial Fund (1921–35).

Family correspondence (1895–1920) and letters from Terence to his wife, Muriel, while in prison (1916–18). Correspondence and notebooks concerning his work at the Cork Municipal School of Commerce (1910–15). Correspondence relating to the publication of his poetry and copies of plays and poems (1902–20).

Etienne Beuque: correspondence with Dorothy Macardle, Annie and Mary MacSwiney, Florrie O’Donoghue and C.J. Harrington (1920–39). Notes and copies of MacSwiney’s diary.

Moirin Chavasse: correspondence with Michael Browne, Bishop of Galway, Major Wallace Dickie, Florrie O’Donoghue, Daniel Corkery, Dorothy Macardle, C.J. Harrington, J.J. O’Kelly, and P.S. O’Hegarty (1950–9). Notes and statements by his contemporaries.

Copies of his papers used by the biographers including typescript extracts from his diary (1916) and copies of correspondence between him and P.S. O’Hegarty (1904–8).