The University Library Heidelberg (German: Universitätsbibliothek Heidelberg) is the central library of the University of Heidelberg. It constitutes together with the 83 decentralized libraries of the faculties and institutes the University Library System, which is headed by the director of the University Library. The University Library holds special collections in literature concerning the Palatinate and Baden, egyptology, archeology, the history of art, and South Asia. It holds about 3.2 million books, 10,732 scientific periodicals, and about 500,000 other media such as microfilms and video tapes. It holds 6,600 manuscripts (most notably the Codex Manesse), 1,800 incunabula, 110,500 autographs, and a collection of old maps, paintings, and photographs. The libraries of the faculties and institutes hold another 3.5 million printed books. In 2005, 34,500 active users of the University Library accessed 1.4 million books a year. The conventional book supply is complemented by numerous electronic services, such as 3,000 commercial scientific journals that can be accessed via e-journal.