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comprises four parts * Classical Scores Library, Volume I - collection of musical prints, manuscripts and up to now unpublished material from the 15th to the 20th century.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 * African American Reference Library - comprehensive reference work and collection of rare and up to now unpublished materials about the history of Afro-American music from the beginnings until the 1970s, with a complete coverage of more than 45,000 pages.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.

The Making of Modern Law (MOML 1) enables the comprehensive exploration of modern law and its development in the 19th and 20th century. More than 10-million pages from works of the American and British history of law, which appeared between 1800 and 1926, can be researched in the fulltext. In doing so, almost all aspects of the American and British law are covered. These aspects are opened up by a searchable representation of 99 areas of law. The approximately 21,000 works comprise casebooks, speeches, courtbooks, but also pamphlets and letters.

This edition of Twentieth Century North American Drama contains more than 1000 plays by north american playwrights of the twentieth century, together with detailed, fielded information on related productions, theaters, production companies, and more. The database also includes selected playbills, production photographs and other ephemera related to the plays. An essential part of the plays are published here for the first time, including a number by major authors.

The edition is based on the series "Heinemann's African Writers Series", a comprehensive collection of modern African 20th century literature. The series comprises more than 300 titles and contains poetry, drama, and non-fictional literature by authors like Ama Ata Aidoo, Mongo Beti, Steve Biko, Dennis Brutus, Cyprian Ekwensi, Buchi Emecheta, Bessie Head, Luis Bernardo Honwana, Chenjerai Hove, Nelson Mandela, Jack Mapanje, and Veronique Tadjo.

The ScienceDirect interface provides access to the electronic content owned by Elsevier and third-party information providers like Cell Press. Max Planck researchers have full text access to nearly the entire journal collection with archival content, including Cell Press and The Lancet journals. In addition, the Max Planck Society covers Open Access fees for Max Planck authors in more than 2500 journals. Further details are available on the MPDL website. The MPG subscription also covers a collection of 680 Elsevier eBooks acquired in 2015. Moreover, selected eBook backfiles have been purchased within the scope of the German national licenses program.

JSTOR provides access to more than 12 million academic journal articles, books, and primary sources in 75 disciplines. Users from the Max Planck Society have access to selected archival collections of scholarly journals and more than 3,000 Open Access ebooks. The book selection is continuously extended by single e-book acquisitions by MPG libraries. Additionally, the license covers the basic tier usage of Constellate - a text and data analysis tool, which uses primary source content from JSTOR. For the archival collections, JSTOR's agreements with publishers include an updating provision referred to as a "moving wall". The moving wall is a fixed period of time ranging, in most cases, from two to five years, that defines the gap between the most recently published issue and the date of the most recent issues available in JSTOR.