PRIESTLY FRATERNITY OF SAINT PETER

The Fraternity and the Liturgy
The goal of the Fraternity of St. Peter is the sanctification of the priest through the exercise of his priestly function, principally by conforming his life to the Holy Sacrifice of the Mass by the observance of "the liturgical and spiritual traditions"
[1] of the Church. The use of the liturgical books in force in 1962 is granted to the members of the Priestly Fraternity of St. Peter as well as to other priests staying in the houses of the Fraternity or exercising their sacred ministry in the churches of the Fraternity [2].

The use of the "traditional" Roman rite (or "tridentine" or the "rite of St. Pius V")
[3] in the form in which it was current in the Latin Church prior to the reform of 1969 is a specificity of the Fraternity of St. Peter. It is therefore fitting to explain our reasons in brief for being attached to this rite which in general is so little known.
Michel-René Landry
INTRODUCTION TO THE LATIN LITURGY
Introduction to the Latin Liturgy