Lumen Vitae, The Work of the first five years and Plans for 1951, International Review of Religious Education edited by the International Centre for Studies in Religious Education, Brussels, Belgium, Printed in Belgium, 1950

Lumen Vitae, The Work of the first five years and Plans for 1951, International Review of Religious Education edited by the International Centre for Studies in Religious Education, Brussels, Belgium, Printed in Belgium, 1950, CMTH 17/23, Box: CMTH 17, Folder: 23. Michael A. Mathis Papers, MTH. University of Notre Dame Archives. https://archivesspace.library.nd.edu/repositories/2/archival_objects/390788 Accessed April 25, 2026.