'Darlith ar y Profion Hanesiol o Awduriaeth a Throsglwyddiaeth Llyfrau y Testament Newydd ... ', being a holograph draft translation by Ebenezer Thomas ('Eben Fardd'), 1854, of S. P. Tregelles: A Lecture on the historic evidence of the authorship and transmission of the books of the New Testament (London, 1852).