- Liszt, Franz, 1811-1886--Correspondence (2)
- Wagner, Richard, 1813-1883 (2)
- Wagner, Richard, 1813-1883--Correspondence (2)
- Composers--Germany--Correspondence (1)
- Nietzsche, Friedrich Wilhelm, 1844-1900 (1)
- Philosophers--Germany--Correspondence (1)
- Wagner, Richard, 1813-1883--Thematic catalogs (1)