Perhaps this duplicates information already presented, but there is quite a list of links on the Walter Benjamin site: The Pansophist Electric Bibliothek Online Library of the Walter Benjamin Research Syndicate http://www.wbenjamin.org/bibliotronic.html I can't recall if we covered this: Ernst Bloch: "BISS": Bloch Informations- und Suchsystem http://www.bloch.de/index.htm