Lectures on various topics during a visit to a number of universities in the USA, 1967. Mainly correspondence. Lecture on Clementi at Berkeley, 8 Jan 1968. 'Some Viennese engravers of music, 1780-1800', [1969?]. 'The "Eroica" symphony and the "Eroica" sketchbook'. Series of postgraduate lectures at the University of Oxford, Michaelmas Term, [1969?]. …