"Un ballo in maschera, potpourri" . . . "Favorite airs ... arranged [as a duet] for the Pianoforte, (with ad lib. acct. for Flute,) by W.H. Callcott. bk. 2" . . . . "Un Ballo in Maschera ... Potpourri par H. Cramer. [P.F.]" . "Un Ballo in Maschera ... Potpourri à quatre mains. [By] H. Cramer. [P.F.]" . . . . "Un ballo in maschera. Potpourri" . . . . . . . "Un ballo in maschera Potpourri" . . . .