3 books in series

Wagner's Ring of the Nibelung

Wagner's Ring of the Nibelung is a 3-book series with 3 primary works first released in 1853 with contributions by Richard Wagner and Opera and Choral Scores.

Das Rheingold
Die Walküre
Siegfried in Full Score
Siegfried: Zweiter Tag Aus Dem Bühnenfestpiel "Der Ring Des Nibelungen"