In the United States, Bertolt Brecht is perhaps best known as the composer of the Threepenny Opera with Kurt Weill, which gave birth to the popular song known in English as "Mack the Knife". He is generally regarded as a tremendously prolific playwright, poet, and theatre director, and his works have been translated into a host of different productions and settings during the 20th and 21st centuries. This bibliography of Brecht's works in English contains over 2600 bibliographical entries and is a cooperative project between the International Brecht Society and the Bertolt-Brecht-Archiv in Berlin. The bibliography is hosted by the University of Wisconsin Digital Collections, though it should be noted that the database is not a record of the holdings of the University of Wisconsin Libraries. Visitors can scan down the homepage to access specific citation sets for Brecht's journals, essays, interviews, letters, plays, poems, and songs. The site is rounded out by a list of links to related materials, including the German Studies collection at the University of Wisconsin and the International Brecht Society.