- Hugo Wolfs Briefe An Oskar Grohe (1905) (German Edition)
- Hugo Wolf: Mit Selbstzeugnissen und Bilddokumenten (Rowohlts Monographien) (German Edition) by Andreas Dorschel, 1985
- Hugo Wolf Briefe An Rosa Mayreder (1921) (German Edition) by Hugo Wolf, Rosa Obermayer Mayreder, 2010-02-23
- Hugo Wolf by Ernest Newman, 2010-08-02
- Hugo Wolfs Briefe An Hugo Faisst (1904) (German Edition)
- Hugo Wolf ... (German Edition) by Anonymous, 2010-02-04
- Hugo Wolf: Sein Leben, sein Werk, seine Zeit (German Edition) by Kurt Honolka, 1988
- Hugo Wolf Songs by Mosco Carner, 1983-03
- Hugo Wolf's Complete Song Texts: In One Volume Containing All Completed Solo Songs Including Those Not Published During the Composer's Lifetime by Hugo Wolf, 2001-02
- The Musical Language of Hugo Wolf by Jean I. Haywood, 1986-01
- Hugo Wolf's Corregidor: A study of the opera and its origins by Peter Cook, 1976
- Hugo Wolf, Volumes 3-4 (German Edition) by Ernst Decsey, 2010-04-08
- Hugo Wolf: Leben Und Werk by Dietrich Fischer-Dieskau, 2003-01
- Hugo Wolfs Musikalische Kritiken (1911) (German Edition)
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