- The Oster collection [microform] : papers of Heinrich Schenker /
- File 34: Analyses of Music by Brahms /
- Label by Ernst Oster: "Brahms, Intermezzi Op. 117 / "Philologisch" /
- Recto: Text and musical example concerning Trio, piano, clarinet, and violoncello, Op. 114, 4th movement. Labeled page 7