The Psychological Method of Natural Painless Childbirth: Address of His Holiness Pope Pius XII Given at an Audience for Gynecologists; National Catholic Welfare Conference, 1956/0108, PGEN 132/5872. General Collection, GEN. University of Notre Dame Archives. https://archivesspace.library.nd.edu/repositories/2/archival_objects/1097539 Accessed November 25, 2024.