The database Music Online Reference of Alexander Street Press comprises four parts * Classical Scores Library, Volume I - collection of musical prints, manuscripts and up to now unpublished material from the 15th to the 20th century. Please note that Boosey & Hawkes Scores are not included. * Classical Music Reference Library - collection of relevant reference works of approx. 55,000 pages about the history of western classical music from the Middle Ages to the 21st century. * African American Reference Library - comprehensive reference work and collection of rare and up to now unpublished materials about the history of Afro-American music from the beginnings until the 1970s, with a complete coverage of more than 45,000 pages. * The Garland Encyclopedia of World Music Online - comprehensive standard reference work with more than 1,200 elaborate articles about subjects or persons, and approx. 9,200 pages about traditional ethno music worldwide, edited by James Porter and Timothy Rice.

VDE is one of the leading publishers of the German standards collection and offers electrotechnical safety standards. The NormenBibliothek standard portal of VDE (Verband der Elektrotechnik Elektronik Informationstechnik e.V.) provides online access to the entire DIN-VDE standard portfolio. The MPG subscription includes valid standards and drafts of the DIN VDE Groups 0-8 in German.