- The Oster collection [microform] : papers of Heinrich Schenker /
- File 38: Draft Material for Der Freie Satz and Early Articles /
- Part 2 /
- Recto: "Vordergrund und Tonarten". Text in Jeanette Schenker's hand, with sketches for graphs by Schenker of Johannes Brahms, Symphony No. 4, Op. 98, E Minor, 3rd movement