OJ 9/34, [16] Handwritten letter from Cube to Schenker, dated March 26, 1929

Cube is listening by radio to music being performed in Vienna. The two caricatures are his fellow composition teachers at Duisburg. Reports on his work at Cologne Conservatory: success with previous lectures, and forthcoming lecture series.

OJ 15/15, [39] Handwritten postcard from Weisse to Schenker, dated April 13, 1929

Weisse arranges to meet Schenker outside the Musikverein before a performance of Beethoven's Ninth Symphony.

Diary entry by Schenker for 28 May 1914

Diary entry by Schenker for 27 December 1932