The Pastoral-Liturgical Renewal in the Pontificate of Pius XII, program of the International Congress of Pastoral Liturgy held in Assisi September 18 to 21 and Rome September 22, 1956, with the closing address delivered by the Holy Father, 1956/09, CMTH 27/01, Box: CMTH 27, Folder: 01. Michael A. Mathis Papers, MTH. University of Notre Dame Archives. https://archivesspace.library.nd.edu/repositories/2/archival_objects/390976 Accessed December 30, 2025.