Mara. Libretto. German Opera.. Public domain libretto, Library of Congress

Dichtung von Axel Delmar ; Musik von Ferdinand Hummel ; Op. 61. (statement of responsibility)
U.S. RISM Libretto Project.
Imprint from p. 22; "Ausschliessliches Eigentum des Komponisten"--title page; legal notices signed by composer and dated "Berlin, im September 1893"--verso of title page; "Den Bühnen gegenüber als Manuskript gedruckt"--verso of title page.
Axel Delmar was pseudonym of Axel H. W. von Demandowski--NUC pre-1956.
Singers' names not given.