My PhD research considers the composition, dissemination, and use of the Homiliary of Paul the Deacon in Carolingian Europe. The Homiliary was a collection of sermons on Christian doctrine and homilies on the Gospels, sponsored and promoted by Charlemagne as part of his attempts at religious reform in the Frankish kingdoms. It was compiled by Paul the Deacon, a Lombard scholar associated with the royal court. My research rests upon the original examination of roughly seventy-five manuscripts of the Homiliary from the ninth and tenth centuries, used in many of the most prominent cathedrals and monasteries of the time. Although my primary goal is to clarify the early history and use of this collection, which has been little studied, a broader angle to my research concerns the impact of government sponsored religious reform, as the Homiliary quickly became one of the most widely used books in Europe and would remain so for nearly a millennium.