Pope Benedict XVI’s Apostolic Letter Summorum Pontificum
Pope Benedict XVI’s Letter to Bishops Con grande fiducia (July 7, 2007)
Pontifical Commission Ecclesia Dei, Instruction Universae Ecclesiae
For a printable booklet that includes the three documents above, click here. [PDF]
Pope St. John XXIII’s Apostolic Constitution Veterum Sapientia
The Second Vatican Council’s Constitution on the Sacred Liturgy Sacrosanctum Concilium