Pope Sixtus IV (21 July 1414 – 12 August 1484), born Francesco della Rovere, was Pope from 9 August 1471 to his death in 1484.
- Superna Caelestis (Canonizing St. Bonaventure of Bagnoregio [Bull]April 14, 1482 A.D.) – June 16, 2017Ereader Files: English [ MOBI– EPUB– ] Latin [ MOBI– EPUB