Concerning "Catholic Action": The Conflict in Italy, Encyclical Letter (Non Abbiamo Bisogno) of His Holiness, Pope Pius XI; National Catholic Welfare Conference, 1931/0629, PGEN 132/5883. General Collection, GEN. University of Notre Dame Archives. https://archivesspace.library.nd.edu/repositories/2/archival_objects/1097550 Accessed November 27, 2024.