The database contains the text editions of the printed Aristoteles Latinus series and is continuously enriched by additional editions. This electronic edition is particularly valuable, partly because it is an integrated database containing all medieval translations of Aristotle's work. The subscription covers full text access to all content added until January 2015.

The database provides access to full texts of international auction catalogues published between 1600 and 1900. Approx. 35,000 titles are planned to be digitized. Electronic fulltexts are based on filmed versions of holdings from diverse libraries, among others the Rijksbureau voor Kunsthistorische Documentatie (RKD), The Hague; the Rijksmuseum, Amsterdam; the National Art Library, Victoria and Albert Museum, London; the Courtauld Institute, London.

The Digital Library of the Catholic Reformation makes the documentary riches of this era accessible, adding functionalities that maximize the flexibility with which researchers can search, view, organize, and manipulate this historically important source material. With new content uploads occurring on a regular basis, the database offers a constantly growing treasury of documents, including papal and synodal decrees, catechisms and inquisitorial manuals, biblical commentaries, theological treatises and systems, liturgical writings, saints' lives, and devotional works.

The Digital Library of Classic Protestant Texts gives researchers access to an extensive range of seminal works from the Reformation and post-Reformation eras. With new content uploads occurring on a regular basis, the database offers a constantly growing treasury of theological writings, biblical commentaries, confessional documents, and polemical treatises written by more than 300 Protestant authors.