The Deutsches Literatur-Lexikon is one of the best known, most comprehensive and most reliable reference works on German literature. Spanning the ages, the work encompasses writers from all eras, ranging from the Middle Ages to the present day. Volume 28 contains, among other, articles on Walther von der Vogelweide, Fred and Maxie Wander, Aby Warburg, Jakob Wassermann and Max Weber. In line with the encyclopedia's broad definition of the term literature, information is also included on numerous specialists in their fields, e.g. conductor Bruno Walter and footballer Fritz Walter.