The History of the Liturgy During the Middle Ages, list of lectures by Rev. Dr. Bonifaas Luykx, O. Praem. of Postel Abbey, Belgium, Lectures on Liturgy by European Scholars, Liturgical Program of the Summer Session at the University of Notre Dame, Notre Dame, IN, 1951

The History of the Liturgy During the Middle Ages, list of lectures by Rev. Dr. Bonifaas Luykx, O. Praem. of Postel Abbey, Belgium, Lectures on Liturgy by European Scholars, Liturgical Program of the Summer Session at the University of Notre Dame, Notre Dame, IN, 1951, CMTH 14/01, Box: CMTH 14, Folder: 01. Michael A. Mathis Papers, MTH. University of Notre Dame Archives. https://archivesspace.library.nd.edu/repositories/2/archival_objects/390620 Accessed April 21, 2026.