19. Brandenburg, “Die Beethovenhandschriften in der Musikaliensammlung des Erzherzogs Rudolph,” in Zu Beethoven: Aufsätze und Dokumente, III, ed. Harry Goldschmidt (Berlin: Verlag Neue Musik, 1988): 141–176, esp. 173–175. The two exceptions are the incomplete cadenza for the first movement of Opus 15 (Beethovenhaus, Bodmer Mh 10, SBH 521), which was evidently acquired by Haslinger directly at the auction of Beethoven’s Nachlass in November 1827, and a “Kadenz zum Rondo” of the piano transcription of Opus 61, now contained in the sketch miscellany Berlin: Staatsbibliothek zu Berlin—Preußischer Kulturbesitz, Mus. ms. autogr. Beethoven 28, fol. 11. Joseph Fischhof, who once owned the miscellany, had access to the Rudolphinischen Sammlung, and (as Brandenburg notes) “was one of the first to prepare a copy of the cadenzas to the piano concertos.” Neither of these cadenzas bears the inventory signature that would place it earlier in the Archduke’s library.