OJ 11/54, [33] Handwritten picture postcard from Hoboken to Schenker, dated April 27, 1931

Hoboken reports when he will be back in Vienna.

OJ 11/54, [34] Handwritten letter from Hoboken to Schenker, dated April 29, 1931

Hoboken may stay at the Semmering spa for a few more days, and discusses his next appearance for a lesson. — He discusses Specht's Bildnis Beethovens.

Diary entry by Schenker for 17 April 1931

Diary entry by Schenker for 25 April 1931

Diary entry by Schenker for 8 May 1931

Diary entry by Schenker for 12 May 1931

Diary entry by Schenker for 2 December 1931

Diary entry by Schenker for 6 November 1934

Diary entry by Schenker for 11 November 1934