Round-table discussion on Beethoven at the American Musicological Society's Annual Meeting in Santa Barbara, California, 26-30 Dec 1967. 'Haydn documentation 2: source problems, authenticity and chronology' and 'Op. 3: Haydn or Hofstetter?', round-table discussions at the Haydnfest, Music Festival and International Musicological Conference, Washington, DC, 22 Sep-11 Oct 1975. 'In…