The Bayerische StaatsBiblioteche is an excellent source of digitized books from all periods. They are up to 39,137 titles and adding more facsimile editions daily. The great thing about this site is you can download entire books in pdf. I’ve provided links to a couple of works that the Reformed community could greatly profit from. Martyr’s commentary has an English edition but Zanchi’s work needs to be translated for the benefit of those who are not proficient in Latin – it would provide a great source of scholastic learning for the laity and scholar alike. Anyone interested in the Reformed acceptance of the classics and Greek philosophy and Scholasticism should check out the following books.
Peter Martyr Vermigli, Commentary on Aristotle’s Ethics:
In Aristotelis ethicorum ad Nicomachum librum I. II. ac initium tertii commentarius
Girolamo Zanchi, On God’s Nature:
De Natura Dei seu de divinis attributis libri v
This looks to be a promising read and a great resource for understanding Aquinas’s philosophical theology from – Oxford University Press (June, 2008 ). Here’s a brief description from the publisher:
This book offers an in-depth examination of what divine simplicity means for Aquinas and how he argues for its claims. Simplicity and other divine predicates are analyzed within the larger metaphysical and semantic framework surrounding Aquinas’s philosophy of God. The work thus goes beyond the issue of simplicity to some of the fundamental tenets of Aquinas’s philosophical theology and his views on divine predication. The author also engages with a variety of Aquinas’s recent commentators, bringing the insights of this great figure to bear on contemporary discussions.