O'Brien, A. P., Duffy, G. G., Ua Ceallaigh, S., & Gaelic League of London. (1916). Account of a military raid on the Gaelic League of London, an address given by O'Brien to the League, an article by Seán Ua Ceallaigh concerning the prosecution of Laurence Ginnell for writing his name in Irish, and a letter by George Gavan Duffy informing O'Brien that the Gaelic League has been directed to defend Ginnell.

O'Brien, Art Patrick, et al. Account of a Military Raid on the Gaelic League of London, an Address Given by O'Brien to the League, an Article by Seán Ua Ceallaigh Concerning the Prosecution of Laurence Ginnell for Writing His Name in Irish, and a Letter by George Gavan Duffy Informing O'Brien That the Gaelic League Has Been Directed to Defend Ginnell. 1916.