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 research database "German Literary Expressionism Online", published in 2009, compiles 151 journals, yearbooks, collections and anthologies from the early 20th century, containing 40,000 articles and 79,000 full text pages in total.