Das Höllisch Gold. Ein deutsches Singspiel in einem Aufzug (Vocal score with German libretto / English translation by Krista Bowers Sharpe and Gary Schmidt)
Lucedia, A Legend from Pagan Times. Tragical Opera in a Prelude and three Acts (1931-32). (Vocal score by Otto Lindemann with German & Italian libretto / The full opera score has been lost during the turmoil of the 2nd World War.)