This sacramentary, compiled at the abbey of Echternach between 895 and 900, is one of the most interesting and unusual examples from the Carolingian period. Unique in combining aspects of Gregorian, Gelasian, and Old Gelasian sacramentaries, it also has important implications for such matters as Carolingian liturgical reforms, and it is a vital source for the study of the local history of the abbey of Echternach itself. The Sacramentary, with material appended to it (such as a list of the benefactors of the abbey), is presented here in a diplomatic edition, with introduction, notes and collation tables by the editor.YITZHAK HENis Lecturer in History at the Ben-Gurion University of the Negev, Israel.