O'Brien, A. P., & Ó Ceallaigh, S. T. (1926). Items relating to the foundation of Fianna Fáil, including typescript copy letters to Seán T. Ó Ceallaigh from Art Ó Briain Irish political matters, notes by Ó Briain on general political developments, a newspaper cutting on Fianna Fáil’s entry into the Dáil, and typescript copy letter of Ó Briain to De Valera.

O'Brien, Art Patrick, and Seán T. Ó Ceallaigh. Items Relating to the Foundation of Fianna Fáil, Including Typescript Copy Letters to Seán T. Ó Ceallaigh from Art Ó Briain Irish Political Matters, Notes by Ó Briain on General Political Developments, a Newspaper Cutting on Fianna Fáil’s Entry into the Dáil, and Typescript Copy Letter of Ó Briain to De Valera. 1926.