The Historical Archives holds a library of approximately 5000 specialised volumes and sets of works that include printed and handwritten manuscripts, for the most part on local history. The archive is catalogued by a card index system that has been set up over the last hundred years and contains more than 40,000 cards. The cards are arranged as ‘contracts’. General research, history and chronicles of city life, taken from newspapers etc and its library is set up by author and easy to use. Manuscripts considered valuable are: cartulary documents and Community statues; statutes of craft guilds; literary and storiographical manuscripts.