OJ 13/10, [7] Handwritten letter from Oppel to Schenker, dated September 7, 1919

Oppel expresses his pessimism in the aftermath of the war and the prospects for his generation. He sends a chaconne for Schenker's comment, and reports his appointment as a teacher in theory and composition at the Kiel Conservatory. Alfred Einstein asked him for a review of the Erläuterungsausgabe, but he declined.

OJ 5/7a, [28] (formerly vC 28) Handwritten letter from Schenker to Cube, dated January 12, 1930

Acknowledges OJ 9/34, [20], and gives detailed critique of Cube's analysis of the C major Prelude from WTC I, including graphs; advises on additional reading and Cube's plans to publish the analysis.