Collaborators Hans Borchardt, Emil Burri, Elisabeth Hauptmann. Unpublished stage manuscript housed at Bertolt-Brecht-Archive. Adapted for radio and directed by H. B. Fortuin. Songs composed by Hans-Dieter Hosalla. Access to and inspection of materials only by permission of the Bertolt-Brecht-Erben and the translator(s). Einsichtnahme nur nach Genehmigung der Bertolt-Brecht-Erben und der Übersetzer.