John Boyle, a professor of the University of St. Thomas w Minnesocie and one of the most renown American specialists in the thought of St. Thomas Aquinas, publishes at his website scans of a number of his papers on Aquinas. You may find the texts on Thomas’ interpretation of the anointing of the sick (St. Thomas Aquinas on the Anointing of the Sick [Extreme Unction]), on some of his rules of Scriptural egsegesis (Authorial Intention and the divisio textus and The Theological Character of the Scholastic „Division of the Text” with Particular Reference to the Commentaries of Saint Thomas Aquinas), on the issue of God’s „power of generating” (St. Thomas Aquinas and the analogy of potentia generandi), on Christology in the III part of Summa Theologiae (The Two-fold Division of St. Thomas’ Christology in the tertia pars and Is the tertia pars of the „Summa theologiae” misplaced?).
Some of the papers concern Aquinas’ Lectura romana in primum Sententiarum Petri Lombardi – the work long thought to be lost, constituting second commentary by Thomas on the I book of Sentences of Peter Lombard. It is a reportatio of Aquinas’ lectures on the topic, given in Rome in 1265-1266. John Boyle is a co-author of the first critical edition of this work, published in 2006 by the Pontifical Institute of Medieval Studies. On his webpage he makes available both a paper generally introducing the work in question (Aquinas’ Roman Commentary on Peter Lombard), and articiles on specific issues undertaken in this commentary (The Ordering of Trinitarian Teaching in Thomas Aquinas’ Second Commentary on Lombard’s „Sentences” and The Analogy of „Homo” and „Deus” in St. Thomas Aquinas’ „Lectura romana”).
John Boyle is also an author of the book Master Thomas Aquinas and the Fullness of Life (St. Augustine’s Press 2014), based on his lecture given at the University of Dallas in 2013. Online you may also find another version of this lecture, given at the University of St. Thomas in 2016.