We recommend this legally free ebook:
- S. Peter, Bishop of Rome, or, The Roman Episcopate of the Prince of the Apostles: proved from the Fathers, history, and archaeology, and illustrated by arguments from other sources, by Rev. T. Livius, C.Ss.R. (London: Burns & Oates; New York: Catholic Publication Society, 1888). With Imprimatur. Available in various formats at Open Library and Internet Archive, which states the author to be Thomas Stiverd Livius.