WSLB 31 Handwritten letter from Schenker to Hertzka (UE), dated December 22, 1908

Schenker agrees to the Instrumentations-Tabelle being published without his newly written Introduction. — He declines the proposal to edit the Well-tempered Clavier Book II for the new Akademie, offerin alternative suggestions and observations on Busoni's editing.

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.

DLA 69.930/8 Handwritten letter from Schenker to Halm, dated October 27, 1919

Schenker writes of the deteriorating intellectual conditions in Germany and Austria with respect to other nations, and of the devastating political and psychological consequences. Schenker praises Halm's Klavierübung for its sensitivity to voice leading, and speaks of it as an antidote to the decline of musical literacy. He hopes to talk with Halm about these matters when he moves to Germany.

OJ 15/22, [7] Handwritten letter from Willfort to Schenker, dated June 14, 1934

Willfort, writing from Berlin, has been unable to make contact with Furtwängler. — He has spent time with Jonas; — is disappointed that Schenker will not be in Vienna to hear him conduct the Brahms' "Tragic" Overture; — gives travel plans; — inquires after Schenker's reaction to his work on the "Moonlight" Sonata.

Diary entry by Schenker for 26 September 1928

Diary entry by Schenker for 6 March 1931