- The Oster collection [microform] : papers of Heinrich Schenker /
- File 38: Draft Material for Der Freie Satz and Early Articles /
- Part 1 /
- Recto: "Vom Mittelteil in der Sonatenform, der sogenannten Durchführung" [an earlier version of §314 of Der freie Satz]. Text in Jeanette Schenker's hand [text is continued on items 165-166].Also contains sketches for graphs of Wolfgang Amadeus Mozart, Sy