Leo I, Pont. Max.Sermones (ed. Johannes Andreas de Bussis).
Imprint:
Rome: Johannes Philippus de Lignamine, [between 7 Mar. and 21 Sept.] 1470. Folio.
On the dating (from the copy in the Biblioteca Marucelliana, which was used by Sweynheym and Pannartz as the examplar for their edition, Goff L‑129) see Piero Scapecchi, ‘An Example of Printer's Copy used in Rome, 1470', Library, 6th ser., 12 (1990), 50-2.