The letters and other papers of Dr. William Allen printed In this volume supplement the large collection assembled by T. F. Knox in his Letters and Memorials ot William, Cardinal Allen, London, 1882, and the much smaller group of Correspondence of Cardinal Allen, edited by P. Ryan, S.J., in C.R .S. Vol. 9, 1911. The new letters, most of them never before printed, include all thatthe present editor has been able to collect up to the date of going to press, including six documents which came to light too late to be pla~ed in their correct positions in the main body of the book. These have had to be placed together in a section headed Addenda, after No. 114. It seems very probable that yet other letters or memorials emanating from Allen's pen still await discovery.
