Ryan, W. P., O'Brien, A. P., Ó Muirthuile, S., Gaelic Athletic Association, Self-Determination for Ireland League of Australia, Dáil Éireann, & Gaelic League of London. (1922). Statement for publication regarding the inaugural meeting of the Gaelic League of London, including extracts of speeches by Art Ó Briain, Seán Ó Muirthuile and W. P. Ryan, with letters, documents and a flyer regarding the organisation of the Aonach Táillteann.

Ryan, W. P., et al. Statement for Publication Regarding the Inaugural Meeting of the Gaelic League of London, Including Extracts of Speeches by Art Ó Briain, Seán Ó Muirthuile and W. P. Ryan, with Letters, Documents and a Flyer Regarding the Organisation of the Aonach Táillteann. 1922.