Barrington, G. F., O'Brien, A. P., & Irish Self-Determination League of Great Britain. (1922). Correspondence and typescript copy correspondence of Art Ó Briain with Gilbert F. Barrington (Newcastle Irish Self-Determination League), concerning possibility of organising an anti-Treaty party in northern England.

Barrington, Gilbert Francis, et al. Correspondence and Typescript Copy Correspondence of Art Ó Briain with Gilbert F. Barrington (Newcastle Irish Self-Determination League), Concerning Possibility of Organising an Anti-Treaty Party in Northern England. 1922.