The Opera libretto library : the authentic texts of the German, French, and Italian operas with music of the principal airs, with the complete English and German, French, or Italian parallel texts
Musical excerpts in piano-vocal score. Reprint of 3 publications, all published in 1939 by Crown Publishers, New York: The Authentic librettos of the Wagner operas; The Authentic librettos of the French and German operas; and The Authentic librettos of the Italian operas.