OJ 5/16, [2] Handwritten draft letter from Schenker to Hertzka (UE), dated December 25, 1908

Schenker justifies his selection and treatment of instruments in the Instrumentations-Tabelle, with acid comments about the English, and dismissal of French contributions.

WSLB 33 Handwritten letter from Schenker to Hertzka (UE), undated [December 31, 1908 or January 1, 1909]

Schenker defends his Introduction to the Instrumentations-Tabelle and the exclusion of the heckelphone.

Diary entry by Schenker for 25 December 1907