Musik von Aloys Schmitt. (statement of responsibility) U.S. RISM Libretto Project. Cover title; at head of title: "Gesänge"; legal notice--title page; "Verbesserungen"--p. 1. Libretto by C.M. Heigel--Stieger. O More
Musik von Alois Schmitt. (statement of responsibility) U.S. RISM Libretto Project. Handwritten note--title page. Libretto by C.M. Heigel--Stieger. Opernlexikon. Performers' names not given.