Catholic Liturgy

2nd edition. Washington, DC: Gale, 2003. 15 volumes + supplements.
For print version locations, see the UofT Library Catalogue.
The first edition of this reference work was published in 1967. This revised edition includes the best of the previous entries - many completely revised and updated - as well as new entries, written by subject experts, covering the latest topics of interest. Many thousands of articles are biographical profiles of the people who make up the history of the Catholic Church.

New York: Robert Appleton, 1907.
16 volumes + 3 supplements.
For print version locations, see the UofT Library Catalogue.
For over fifty years this work was the chief source of information on the Catholic Church in English-speaking countries. Owing to its length (almost twice as many words as the New Catholic Encyclopedia) and its emphasis on historical articles, it is still useful for the history of the liturgy.

Paris: Letouzey et Ané, 1907–1953. 15 volumes.
The most complete and scholarly reference work on the ancient liturgies of the Church. Covers liturgical art, architecture, music, rites, and formulas.
A few volumes are available online: tome1:1, A-AME; tome 3:1, CHA-CHY; tome 3:2, CIA-CYZ; tome 4:1, D-DOM; tome 4:2, DOM-EMP; tome 5:1, ENC-FEU; tome 5:2, FIA-FUS; tome 14:2, POR-ROM.

Produced by the Institutum Patristicum Augustinianum. Downers Grove, Illinois: IVP Academic, 2014. 3 volumes.
For print version locations, see the UofT Library Catalogue.
The most scholarly English-language dictionary of Christian antiquity with over 3200 signed articles each with an extensive bibliography.