Skizzenbuch “Kafka” (Kafka Sketchbook) Prima Sezione – Abbozzi con numero di Opus ( Pagine 1 – 68 )
Autograph Miscellany from circa 1786 to 1799
British Museum additional Manuscript 29801, ff 39-162. Edited by Joseph Kerman, Professor of Music, University of California at Berkley. London 1970