| The Great Encyclical Letters of Pope Leo XIII
|
| On the Evils Affecting Modern Society |
Inscrutabili / Inscrutabili Dei Consilio
|
| Socialism, Communism, Nihilism |
Quod Apostolici Muneris
|
| The Study of Scholastic Philosophy |
Aeterni Patris (Leo XIII)
|
| Christian Marriage |
Arcanum / Arcanum Divinae
|
| Freemasonry |
Humanum Genus
|
| The Christian Constitution of States |
Immortale Dei
|
| Human Liberty |
Libertas Praestantissimum
|
| The Right Ordering of Christian Life |
Exeunte Jam Anno / Exeunte Iam Anno
|
| On the Chief Duties of Christians as Citizens |
Sapientiae Christianae
|
| The Condition of the Working Classes |
Rerum Novarum
|
| Allegiance to the Republic |
Au Milieu des Sollicitudes
|
| The Pope and the Columbus Tercentenary |
Quarto Abrupto Saeculo
|
| The Study of Holy Scripture |
Providentissimus Deus
|
| The Reunion of Christendom |
Praeclara Gratulationis Publicae
|
| Catholicity in the United States |
Longinque Oceani
|
| To the English People |
Amantissima voluntatis (A. L.)
|
| The Unity of the Church |
Satis Cognitum
|
| Anglican Orders |
Apostolicae Curae (A. L.)
|
| The Prohibition and Censorship of Books |
Officiorum ac Munerum (A. C.)
|
| The Holy Spirit |
Divinum Illud
|
| True and False Americanism in Religion |
Testem Benevolentiae (A. L.)
|
| On the Consecration of Mankind to the Sacred Heart of Jesus |
Annum Sacrum
|
| Christ Our Redeemer |
Tametsi
|
| Christian Democracy |
Graves de Communi (A. L.)
|
| The Religious Congregations in France |
Au Milieu des Consolations (L.)
En Tout Temps (L.)
|
| Congratulations to the American Hierarchy |
In Amplissimo (L.)
|
| The Most Holy Eucharist |
Mirae Caritatis
|
| The Holy Scriptures ; The Biblical Commission |
Vigilantiae
|
| The Church in the Philippines |
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|
| Review of His Pontificate |
Vigesimo Quinto Anno (A. L.)
|
