The Parliamentary History of the Irish Land Question, from 1829 to 1869, and the Origin and Results of the Ulster Custom, by R. Barry O'Brien,... 4th Edition
Studies in Irish History, 1603-1649: Being a Course of Lectures Delivered Before the Irish Literary Society of London. Edited by R. Barry O'Brien. Second Series
The Irish Nuns at Ypres: an Episode of the War. By D.M.C., O.S.B. (Dame M. Columban) ... Edited by R. Barry O'Brien. With an Introduction by John Redmond ... With Illustrations