A romantic interest has always attached to the library at Urbino. The best scholars in Europe used to assemble at the palace, where Duke Federigo made such a gathering of books 'as had not been seen for a thousand years,' in the hall where Emilia and the pale Duke Guidubaldo led the pleasant debates described in the 'Cortegiano.' Federigo, the most successful general in the Italian wars, had built a palace of delight in his rude Urbino, in which he hoped to set a copy of every book in the world. His book-room was adorned with ideal portraits by Piero della Francesca and Melozzo: it was very large and lofty, 'with windows set high against the Northern sky.' The catalogue of the books is still preserved in the Vatican. It shows the names of all the classics, the Fathers, and the mediaeval schoolmen, many works upon Art, and almost all the Greek and Hebrew works that were known to exist. Among the more modern writers we find those whose works we have discussed, Petrarch and his friends, Guarini and Perotti, and Valla with his enemy Poggio; among the others we notice Alexander ab Alexandro, a most learned antiquarian from Naples, of whom Erasmus once said: 'He seems to have known everybody, but nobody knows who he is.' The chief treasure of the place was a Bible, illuminated in 1478 by a Florentine artist, which the Duke caused to be bound 'in gold brocade most richly adorned with silver.' 'Shortly before he went to the siege of Ferrara,' says his librarian, 'I compared his catalogue with those that he had procured from other places, such as the lists from the Vatican, Florence, Venice, and Pavia, down to the University of Oxford in England, and I found that all except his own were deficient or contained duplicate volumes.' His son, Duke Guidubaldo, was a celebrated Greek scholar; and the eulogies of Bembo and Castiglione on his Duchess, Elizabeth Gonzaga, attest the literary distinction of her Court. Francesco, the third Duke, lost his dominions to Leo X.; but he showed his good taste in stipulating that the books were to be reserved as his personal effects. Some of the early-printed books are still in the palace at Urbino; others are at Castel Durante, or in the College of the Sapienza at Rome; and the splendid MSS. form one of the principal attractions of the Vatican.