- Felix Salzer papers /
- Series 2: Heinrich Schenker Nachlass /
- Sub-series 4: Analyses of Beethoven, Brahms, Haydn, and Mozart (Mappe 27) /
- Brahms-Haydn /
- 27/21 /
- Recto/Verso: Page torn out of Radio Wien magazine, marked "Brahms, Sch. Haydn, Choral St. Antoni"; with dates May 28 - June 3, 1928