Extension and renewal of the Vatican Library under Nicholas V
It was pope Nicholas V, a humanist and a patron of the fine arts and letters, who opened the modern history of the Vatican Library: the Pope greatly increased the wealth of Latin, Greek and Hebraic codexes (from 350 they hit about 1200) and decided that they may be consulted by scholars.This initiative fully belongs to the project of renewal of Rome greatness and prestige wanted by the Pope. His successor, Sixtus IV, completed the work, appointed a librarian and granted the Library the required economic support.
Vespasiano da Bisticci, Virorum illustrium CIII qui saeculo XV extiterunt vitae..., in: Angelo Mai, Spicilegium romanum, vol. I, Roma 1839