OJ 10/3, [14] Typewritten letter from Otto Erich Deutsch to Schenker, dated August 16, 1920

Deutsch has written to Wilhelm Kux [about his sketchleaf of the "Moonlight" Sonata], and has received a letter from Edward Speyer, in which Speyer explains that he cannot make a copy of his sketchleaf of the "Moonlight" Sonata while in the countryside. Speyer also writes that a further sketchleaf of the "Moonlight" Sonata is held in the Fitzwilliam Museum and has supplied a facsimile. Deutsch asks Schenker if he would like him to write to the Museum to request a photograph of the sketchleaf.

OJ 10/3, [16] Typewritten letter from Otto Erich Deutsch to Schenker, dated October 1, 1920

Deutsch encloses images of Wilhelm Kux's sketchleaf of the "Moonlight" Sonata for Schenker to study. He is writing to the [Fitzwilliam] Museum in Cambridge about their sketchleaf of the Sonata.

OJ 10/3, [20] Typewritten letter from Otto Erich Deutsch to Schenker, dated November 26, 1920

Replying to Schenker's postcard of November 20th, Deutsch writes that the connoisseur edition is to be reproduced using photolithography, and repeats the particulars of the Fitzwilliam Museum's "Moonlight" Sonata sketchleaves. Speyer has allowed his sketchleaf of the Sonata to be photographed, and reports that he also owns a letter from Beethoven to Schlesinger (Paris) about corrections to the C minor Sonata (Op. 111). Universal Edition urgently requires a prospectus for the Beethoven day, and so Deutsch asks for sight of the draft of Schenker's Preface.

Diary entry by Schenker for 5 November 1920

Diary entry by Schenker for 16 November 1920