The History of the Latin Liturgy by Dom Thomas Michels, O.S.B., Summer School Liturgy Lectures, University of Notre Dame, Notre Dame, IN, 1947

The History of the Latin Liturgy by Dom Thomas Michels, O.S.B., Summer School Liturgy Lectures, University of Notre Dame, Notre Dame, IN, 1947, CMTH 14/32, Box: CMTH 14, Folder: 32. Michael A. Mathis Papers, MTH. University of Notre Dame Archives. https://archivesspace.library.nd.edu/repositories/2/archival_objects/390633 Accessed April 21, 2026.