Columbia subject headings:
Berkeley, Lennox, 1903-1989--Correspondence.
Berkeley, Lennox, 1903-1989--Friends and associates.
Boulanger, Nadia--Correspondence.
Composers--Great Britain--Correspondence.
Harvard subject headings:
Berkeley, Lennox, 1903-1989.
Princeton subject headings:
Berkeley, Lennox, 1903-1989.