- Memoirs of the Council of Trent: Principally Derived From Manuscript and Unpublished Records, Namely, Histories, Diaries, Letters, and Other Documents, of the Leading Actors in That Assembly
- Taxatio Papalis, an Account of the Tax-Books of the United Church and Court of Modern Rome
- Supplement to Memoirs of the Council of Trent, principally derived from manuscript and unpublished records, &c. 1834
- The Venal Indulgenees and Pardons of the Church of Rome
- The Life and Pontificate of Saint Pius the Fifth