The Liturgical Year by Dom Prosper Guéranger
This is a work in progress - the great work of Abbot Guéranger is being added gradually. The latest addition is the great 'O Antiphons' for Advent.

The Church: or, The Society of Divine Praise, by Dom Prosper Guéranger
A Manual for the use of the Oblates of St. Benedict. A rare, little book, containing Dom Guéranger's thoughts on how the Benedictine rule can guide the lives of lay-people, especially oblates of the Benedictine order.

Contemplative Prayer by Père Maurice de la Taille S.J.
A short paper by the well-known Jesuit theologian, indicating the traditional view of passive contemplation: its process, access to it, its trials, its place in the economy of grace, and the kind of direction it demands.