O'Brien, A. P., & Irish Republican Association of South Africa. (1921). Correspondence of Art Ó Briain with Eugene K. P. Scallan, of the Irish Republican Association of South Africa, with a copy of the South African resolution proposing a "world conference of the Irish race", and a flyer on the theme ‘The Irish International’ reprinted from 'The Republic' (Pretoria), f 1921 March 11-1922 June 2.

O'Brien, Art Patrick, and Irish Republican Association of South Africa. Correspondence of Art Ó Briain with Eugene K. P. Scallan, of the Irish Republican Association of South Africa, with a Copy of the South African Resolution Proposing a "World Conference of the Irish Race", and a Flyer on the Theme ‘The Irish International’ Reprinted from 'The Republic' (Pretoria), F 1921 March 11-1922 June 2. 1921.