Motu proprio Ecclesia Dei (Pope John Paul II)

Interpreting the Motu Proprio Ecclesia Dei (Letters from the Pontifical Commission Ecclesia Dei).

Protocol of agreement between the Holy See and the Priestly Society of Saint Pius X.

Cardinal Ratzinger's address on the occasion of the 10th anniversary of Ecclesia Dei.

Cardinal Ratzinger's address to the bishops of Chile.

Cardinal Mayer's letter to the American bishops.

Cardinal Mayer's CIEL address.

Encyclical Mediator Dei (Pope Pius XII) - On the Sacred Liturgy.

Encyclical Musicae Sacrae (Pope Pius XII) - On sacred music.

Apostolic Constitution Divini Cultus (Pope Pius XI) - On divine worship.

Motu proprio Inter Sollicitudines (Pope Pius X) - On sacred music.

Instruction De Musica Sacra (Sacred Congregation of Rites) - On sacred music.

Papal Legislation on Sacred Music, Principle Points this Century.

Sacrosanctum Concilium (Vatican II) - Constitution on the Liturgy.

"The Theological Attractiveness of the Tridentine Mass" by Alfons Cardinal Stickler.

"The Role of the Celebrant in Mediator Dei" by Alfons Cardinal Stickler.

"Mediator Dei Fifty Years On" by Fr. Ephraem Chifley O.P.

"Bishops Against the Pope- The Motu Proprio "Ecclesia Dei" and the Extension of the Indult." by Count Neri Caponi.

"The Emasculation of the Priesthood" by Fr. James McLucas.

"Deconstructing the Mass" by Dr. Robert Phillips.

A History of Gregorian Chant by Alison Hope

Gregorian Chant: A Barometer of Religious Fervor by Stephen Thuis, O.S.B.

The Mass of the Western Rites by Dom Fernand Cabrol.

The Spirit of the Liturgy by Romano Guardini.

Douay Rheims English Bible

Latin Vulgate Bible

Latin Vulgate Bible (another web site)

Gutenberg Bible Online

Latin Vulgate Concordance

Parallel Latin/English Psalter

The Catechism of the Catholic Church (1997)

The Baltimore Catechism

The Catechism of the Council of Trent

The Code of Canon Law (1983)

Codex Iuris Canonici (1983)

The Summa Theologiae of St. Thomas Aquinas

The Catholic Encyclopedia

Vatican Papal Documents

Papal Encyclicals Online

Writings of the Early Church Fathers

Writings of the Early Church Fathers (another web site)

Guide to Early Church Documents

The Ecole Initiative: Early Church Documents