SISTO IV, PAPA — Gabriele Zerbi presents his Quaestiones Metaphysicae to S. IV. Miniature decorating the dedication copy to S. IV, printed on parchment in Bologna by Giov. Valbech and Endrico van Haarlem, 1 Dec. 1482 — Vatican Library, membr. II, 19.
pp. 119–29, 152–36; R. Valentini-G. Zucchetti, Topographical Codex of the City of Rome, II, there 1942, pp. 22, 63; M. Combet-Farnoux, s. V. in DACL, XV, cols. 1501–15. Agostino Amore