Letters to Fr Aubrey Gwynn SJ from Fr B. Colmcille, O.C.S.O., Mellifont Abbey, County Louth, concerning his research work and various publications, such as his book on the history of Mellifont ('The Story of Mellifont') and the Cistercians ('The History of the Irish Cistercians'). Also includes discussions on the literary activities of the medieval Cistercians in Ireland; the history of the abbey, especially its origins and possible connections to a small community at Drogheda (St Mary’s); archaeological excavations at Mellifont; his paper on the lands of St Mary’s Abbey, Co. Dublin and the preparation of maps. (There is a copy of the book 'The Story of Mellifont' (M.H. Gill & Son, 1958) signed by Fr Colmcille for Fr Aubrey Gwynn SJ, in the house Library in Leeson Street)