In the 1970s, Ursula Rößler-Köhler at the University of Bonn began a working group to develop the history of "Book of the Dead" texts. This later received sponsorship from the German state of North Rhine-Westphalia and the German Research Foundation, in 2004 coming under the auspices of the German Academies of Sciences and Arts. Today the "Book of the Dead" Project, as it is called, maintains a database of documentation and photography covering 80% of extant copies and fragments from the corpus of Book of the Dead texts, and provides current services to Egyptologists. It is housed at the University of Bonn, with much material available online. Affiliated scholars are authoring a series of monograph studies, the "Studien zum Altägyptischen Totenbuch", alongside a series that publishes the manuscripts themselves, "Handschriften des Altägyptischen Totenbuches". Both are in print by Harrassowitz Verlag. Orientverlag has released another series of related monographs, "Totenbuchtexte", focused on analysis, synoptic comparison, and textual criticism.