See this legally free ebook:

  • The Chair of Peter or the Papacy: considered in its institution, development, and organization, and in the benefits which, for over eighteen centuries, it has conferred on mankind, by John Nicholas Murphy (London: Burns & Oates, 1888). Available at Internet Archive and Open Library.

On the Solemnity of Saints Peter and Paul. For other legally free ebooks, you may access the List of Free eBooks (Arranged by Title) and the List of Free eBooks (Grouped by Subject). Blessed be God in His angels and in His saints!