The wills of William Loring and William Hunden, both proved in March 1416, bequeathed books to ‘the common library of all scholars of the University’. Over the course of the last six centuries, the Library’s collections have grown from a few dozen volumes on a handful of subjects into an accumulation of several million books, maps, manuscripts and journals, augmented by an ever-increasing range of electronic resources. You can delve into our Library's incredible role in the evolution of human thought by visiting our extraordinary Lines of Thought exhibition, opening in March 2016. Featuring some of Cambridge’s most iconic and best-known treasures and spanning more than 3,000 years of human thought, Lines of Thought investigates through six distinct themes how both Cambridge and its collections have changed the world.