- The Oster collection [microform] : papers of Heinrich Schenker /
- File 38: Draft Material for Der Freie Satz and Early Articles /
- Part 5 /
- Recto: "Von der Absetzung der Teile". Text in Jeanette Schenker's hand, and a sketch for a graph of Wolfgang Amadeus Mozart, Sonata, A Major, K. 331 (300i), 3rd movement