Check out this legally free ebook:

  • Sacred eloquence, or, The theory and practice of preaching, by Thomas J. Potter (New York: Frederick Pustet & Co., 1891). Available at Internet Archive and Open Library (Digitizing sponsor: MSN, Book contributor: Kelly Library, University of Toronto).

Posted in observance of the Feast of St. Peter Chrysologus in the Ordinary Form of the Roman Rite.