- Richard Wagner (Twayne's world authors series, TWAS 77. Germany) by Robert Raphael,  1969
 - Die Walkure (Music Scores) by Richard Wagner,  1978-03-01
 - Tristan and Isolda - Opera in Three Acts by Richard Wagner,  2010-07-12
 - Richard Wagner by Frank B. Josserand,  1982-11
 - A Guide To The Ring Of The Nibelung, The Trilogy Of Richard Wagner: Its Origin, Story, And Music (1905) by Richard Aldrich,  2009-01-19
 - Richard Wagner and the English by Anne Dzamba Sessa,  1977-06
 - For freedom destined: Mysteries of man's evolution in the mythology of Wagner's Ring operas and Parsifal by Franz Emil Winkler,  1974
 - New Studies in Richard Wagner's the Ring of the Nibelung (Studies in the History and Interpretation of Music) 
 - The Life of Richard Wagner (v. 4) by Ernest Newman,  1976-11-06
 - Richard and Adolf: Did Richard Wagner Incite Adolf Hitler to Commit the Holocaust? by Christopher Nicholson,  2007-02-28
 - Richard Wagner, Fritz Lang, and the Nibelungen by David J. Levin,  1999-11-29
 - Siegfried in Full Score by Richard Wagner,  1983-03-01
 - Siegfried in Full Score by Richard Wagner,  1983-03-01
 - Imagined Germany: Richard Wagner's National Utopia (German Life and Civilization) by Hannu Salmi,  1999-08
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