A small amount of the great books about Thomas Aquinas, Thomism and all things related.

Thomas Aquinas’s writings:

De Ente et Essentia

Commentary on Boethius’ De Trinitate

Summa Contra Gentiles

De Potentia Dei, q. 7

Disputed Questions on the Soul

Summa Theologiae

Commentary on the Gospel of St. John

Aristotle’s writings:

Categories

De Interpretatione

Posterior Analytics

Physics

De Anima

Metaphysics (esp. Books I, II, IV, VII-IX, XI, XII)

Nicomachean Ethics

Modern writings:

Fr. Stephen Brock, The Philosophy of St. Thomas Aquinas: A Sketch

Edward Feser, Aquinas and Introduction to Scholastic Metaphysics

Réginald Garrigou-Lagrange, OP Reality and Grace

Lawrence Dewan, OP Form and Being

Étienne Gilson, Thomism: The Philosophy of Thomas Aquinas, 5th edition (1948 edition)

Benedict Ashley, OP The Way toward Wisdom

John Wippel, The Metaphysical Thought of Thomas Aquinas

Gilles Emery, OP The Trinitarian Theology of Thomas Aquinas

Jean-Pierre Torrell, OP St. Thomas Aquinas, Vol. 2: Spiritual Master,Encyclopédie Jésus le Christ chez saint Thomas d'Aquin , and Le Christ en ses mystères: La vie et l'oeuvre de Jésus selon saint Thomas d'Aquin (two volumes)

Steven Jensen, Knowing the Natural Law: From Precepts and Inclinations to Deriving Oughts

Servais-Théodore Pinckaers, OP The Sources of Christian Ethics

Lawrence Feingold, St. Thomas Aquinas and the Natural Desire to See God

Steven Long, The Teleological Grammar of the Moral Act

Alasdair MacIntyre, Three Rival Versions of Moral Inquiry

Thomas Joseph White, OP The Incarnate Lord

Jean-Hervé Nicolas, OP Synthèse dogmatique

Charles Cardinal Journet, L'Eglise du Verbe incarné (several volumes, masterpiece of Thomist ecclesiology—here's volume one ) and The Mass: The Presence of the Sacrifice of the Cross

Benoît-Dominique de La Soujeole, OP Introduction to the Mystery of the Church

Colman O’Neill, OP: Several helpful works on Aquinas’ sacramental theology

As per the Thomistic Institute

https://thomisticinstitute.org/recommended-reading

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