- Felix Salzer papers /
- Series 2: Heinrich Schenker Nachlass /
- Sub-series 4: Analyses of Beethoven, Brahms, Haydn, and Mozart (Mappe 27) /
- Brahms-Haydn /
- 27/23 /
- Recto: Sketches, Brahms-Haydn Variations [vars. 2, 3]; also sketch of an unidentified piece in a minor