On his Academia.edu page, Catholic apologist Robert Sungenis has posted two of his excellent works as PDFs:
Not by Faith Alone: The Biblical Evidence for the Catholic Doctrine of Justification (2d ed)
The Immutable God Who Can Change His Mind the Impassable God Who Can Show Emotion
Not by Faith Alone: The Biblical Evidence for the Catholic Doctrine of Justification (2d ed)
The Immutable God Who Can Change His Mind the Impassable God Who Can Show Emotion