O'Brien, A. P., Ryan, W. P., Sinn Féin, Celtic League, Irish Volunteers, & Irish Institute. (1908). Pamphlets concerning several Irish cultural and political organisations, including the Irish Institute for London, Sinn Féin, the Celtic League, and the Irish Volunteers, also including a draft of W.P. Ryan's 'Lessons from Modern Language Movements'.

O'Brien, Art Patrick, et al. Pamphlets Concerning Several Irish Cultural and Political Organisations, Including the Irish Institute for London, Sinn Féin, the Celtic League, and the Irish Volunteers, Also Including a Draft of W.P. Ryan's 'Lessons from Modern Language Movements'. 1908.