The Catechism on the Old Testament, lines 121-123:
The Old Testament is an indispensable part of Sacred Scripture. Its books are divinely inspired and retain a permanent value, for the Old Covenant has never been revoked.Indeed, “the economy of the Old Testament was deliberately SO oriented that it should prepare for and declare in prophecy the [...]

This is a nice project, the Aquinas Translation project that:
seeks to provide scholars, religious and any interested individuals with tranlations of St. Thomas Aquinas’ works not readily available in English.
A very nice idea. I’m not a scholar, but I would be interested in Aquinas’ commentary on the Psalms.