OJ 11/29, [3] Handwritten letter from Grunsky to Schenker, dated September 10, 1908

Grunsky acknowledges receipt of Schenker's Beitrag zur Ornamentik and two letters; — He recognizes that he and Schenker hold "opposite views" on Bruckner's music but welcomes Schenker's openness to discussion; — He counters Schenker's arguments on Bruckner's approach to form, rhythm, theme, and musical character; — He admits his own "antipathy" toward the music of Brahms.

OJ 5/15, [6] Fragmentary handwritten draft letter from Schenker to Grunsky, undated [? mid‒late September 1908?]

Discusses Bruckner's compositional technique, content, and "eccentric" form: highly fragmentary document.

Diary entry by Schenker for 9 January 1929

Diary entry by Schenker for 9 December 1929