5. Alexander Wheelock Thayer, Ludwig van Beethovens Leben, II, ed. Hermann Deiters, rev. Hugo Riemann (Leipzig: Breitkopf & Härtel, 1910), 186; Thayer, The Life of Ludwig van Beethoven, ed. and tr. Henry Edward Krehbiel (New York: The Beethoven Association, 1921), I: 272–273; Thayer’s Life of Beethoven, rev. and ed. Elliot Forbes (Princeton: Princeton University Press, 1967), 261.