O'Brien, W. (1918). Telegraph from unknown author to William O'Brien sending their best wishes for the Mansion House Conference where he represented the Labour Party and the Irish transport and general workers' union in talks dealing with resisting the conscription of the Irish nation into World War One and also writes "that the struggle for human freedom and the fraternity of nations will be brought to a speedy and triumphant conclusion".

O'Brien, William. Telegraph from Unknown Author to William O'Brien Sending Their Best Wishes for the Mansion House Conference Where He Represented the Labour Party and the Irish Transport and General Workers' Union in Talks Dealing with Resisting the Conscription of the Irish Nation into World War One and Also Writes "That the Struggle for Human Freedom and the Fraternity of Nations Will Be Brought to a Speedy and Triumphant Conclusion". 1918.