The most authoritative listing of Aquinas's works in English is I. T. Eschmann, “A Catalogue of St. Thomas's Works: Bibliographical Notes, ” in The Christian Philosophy of St. Thomas Aquinas, by Étienne Gilson (New York: Random House, 1956). It is supplemented by “A Brief Catalogue of Authentic Works, ” in Friar Thomas D'Aquino, by James A. Weisheipl (Oxford: Basil Blackwell, 1974; republished with Corrigenda and Addenda, Washington, D. C.: Catholic University of America Press, 1983).
The definitive edition of Aquinas's writings is currently being published by the Leonine Commission, established by Pope Leo XIII in 1880, which has now produced volumes containing Aquinas's most important works: Sancti Thomae Aquinatis Doctoris Angelici, Opera Omnia, Iussu Leonis XIII (Rome: Vatican Polyglot Press, 1882–). Publications of Aquinas's writings prior to the Leonine edition include the Parma edition (Opera Omnia [Parma: Fiaccadori, 1852–73]) and the Vivès edition (Opera Omnia [Paris: Vivès, 1871–82]). Most of Aquinas's writings have also been published in manual size by the Casa Marietti (Turin and Rome). Students of Aquinas should also consult R. Busa, Index Thomisticus (Stuttgart and Bad Cannstatt: Frommann-Holzboog, 1974– 80), which provides a text of Aquinas's writings and a useful, if somewhat unwieldy, way to search for terms used by him.
A substantial amount of Aquinas's writing still remains untranslated into English. There are, however, some currently available English editions of a number of his more important works. To date, the best English edition of the Summa theologiae (with notes and commentaries) is the Blackfriars edition, 61 vols., Latin and English with notes and introductions (London: Eyre and Spottiswoode; New York: McGraw-Hill Book Co., 1964–80). Unfortunately, however, this translation is sometimes unreliable. For a more literal render-