Irish Labour Party and Trade Union Congress & O'Mahony, S. (1920). Ireland at Berne: Being the reports and memoranda presented at the International Labour and Socialist Conference held at Berne, February, 1919. The Talbot Press, Ltd.

Irish Labour Party and Trade Union Congress and Seán O'Mahony. Ireland at Berne: Being the Reports and Memoranda Presented at the International Labour and Socialist Conference Held at Berne, February, 1919. The Talbot Press, Ltd, 1920.