O'Brien, A. P., Harvey, S., McGrath, S., & Irish Self-Determination League of Great Britain. (1921). Correspondence of Art Ó Briain with members of Walworth branch of Irish Self-Determination League regarding their refusal to subscribe to a testimonial for Mary MacSwiney’s St. Ita’s School in Cork and the maintenance of London Irish Office.

O'Brien, Art Patrick, et al. Correspondence of Art Ó Briain with Members of Walworth Branch of Irish Self-Determination League Regarding Their Refusal to Subscribe to a Testimonial for Mary MacSwiney’s St. Ita’s School in Cork and the Maintenance of London Irish Office. 1921.