The Mass:
A Study of the Roman Liturgy
Fortescue's
erudite study
on the liturgy,
now in hardback

Learning the Mass
Handy booklet for clerics by Fr. Walter Schmitz for learning to celebrate the traditional Roman Mass

Learning the
New Breviary
Handy booklet
for learning traditional (1962) Roman Breviary

A Dictionary
of the Psalter
Fr. Britt's reference work for the Latin Vulgate Psalter