Sixteen encyclicals of His Holiness, Pope Pius XI St Francis of Assisi (Rite Expiatis)|The promotion of true religious unity|The Christian Education of youth (Divini illius Magistri)|Saint Augustine|Christian Marriage (Casti Connubii)|Reconstructing the social order (40 years after) (Quadragesimo Anno)|C - Pius XI (Washington National Catholic Welfare Conference, 1926)