Directives for the Building of a Church by The Liturgical Commission of the German Hierarchy, composed by Rev. Theodor Klauser, Rector Magnificus of the University of Bonn, The Liturgical Press, Collegeville, MN, reprint from Orate Fratres, Vol. XXIV, No. 1, 1949/12, CMTH 4/37, Box: CMTH 4, Folder: 37. Michael A. Mathis Papers, MTH. University of Notre Dame Archives. https://archivesspace.library.nd.edu/repositories/2/archival_objects/389989 Accessed January 07, 2026.