Some illuminated choir books, used by the friars for communal singing, are on view in two cases placed at the centre of the room. It is a series of sixteen tomes, which were written to cover the entire liturgical year. The majority of the manuscripts was made between the 1470s and the 1480s in the actual friary where a scriptorium, strongly endorsed by Saint Bernardino, had been established in the first half of the fifteenth century. The saint’s early background (his studies in philosophy and law) and the gradual diffusion of the values ​​advocated by Humanism led the saint to understand ​​the importance of the written word and the transmission of knowledge. Copies of his works and patristic books, treatises, prayer books and missals, some of which contain notes affixed by Bernardino himself, were made in this scriptorium. Much of the literary heritage of the Observance is now housed at Siena’s Biblioteca Comunale and in the Vatican Library in Rome, while some original manuscripts donated to the friary by Alessandro Sermoneta are still here. The museum’s collection of choir books consists of Graduals, Kyrials, Antiphonaries and Psalteries. Three scriptores have been identified: Friar Giovanni di Piero di Vico da Siena, Friar Jacopo di Filippo Torelli and Friar Benedetto da Siena, while there seem to be four anonymous pictores of the illuminated initials, all close . . .