OC 52/12 Handwritten letter from E. Ascherberg to Universal Edition, dated January 20, 1904

Ascherberg reports research on ballads arranged by Haydn.

OC 52/13 Typewritten letter from Weinberger and Hardmuth (UE) to Schenker, dated February 3, 1904

UE sends Schenker the bill for British Museum research.

OJ 10/3, [6] Handwritten letter from Otto Erich Deutsch to Schenker, dated January 9, 1920

Deutsch is sorry that a customer prevented him for speaking with the Schenkers when they visited his store. Photographic originals will be needed for the connoisseur edition.

OC B/169 Typewritten letter from Wilhelm Altmann to Schenker, dated dated January 22, 1920

OJ 11/54, [12] Handwritten letter from van Hoboken to Schenker, dated January 28, 1927

Hoboken had to cancel his planned visit to John Petrie Dunn because of illness. — He reports on library visits in London and Paris, discusses manuscripts and conditions for photography, purchases. — He plans no further trips this season.

OJ 10/3, [63] Typewritten postcard from Deutsch to Schenker, dated June 4, 1927

Deutsch has found a reference to the autograph manuscript of Beethoven’s Piano Sonata in G, Op. 79, and tells Schenker he can find out more about it from the British Museum. The Hammers are visiting him on Wednesday (June 8), and he hopes that the Schenkers will be able to join them.

WSLB-Hds 191.559 Handwritten postcard from Schenker to Deutsch, dated June 6, 1927

Schenker asks Deutsch to make inquiries at the British Museum on his behalf, concerning the autograph manuscript of Beethoven’s Sonata Op. 79. He is annoyed with Hertzka for letting someone else take on the editing of Mozart’s piano sonatas for Universal Edition.

WSLB 403 Handwritten letter from Schenker to Hertzka (UE), dated December 23, 1928

Schenker reports on the autograph manuscript of Beethoven Op. 79. — He is "convinced" that the autograph of Op. 106 is in England.

Diary entry by Schenker for 4 June 1927

Diary entry by Schenker for 23 December 1928