1. J.R.R. Tolkien (1963) ‘Letter to Mrs Munby’, 21 October 1963, http://tolkiengateway.net/wiki/Letter_to_Mrs_Munby.
2. J.R.R. Tolkien (1967) ‘The Prevalence of Hobbits’ (interviewed by Philip Norman), The New York Times Magazine, 15 January.
3. J.R.R. Tolkien (1976) The Father Christmas Letters (edited by Baillie Tolkien), London: George Allen & Unwin (letters composed 1925–1939).
4. J.R.R. Tolkien (1979) The Silmarillion (edited by C. Tolkien), London: Unwin Paperbacks (originally published 1977, pagination differs).
5. J.R.R. Tolkien (1981) The Letters of J.R.R. Tolkien (a selection edited by Humphrey Carpenter with the assistance of Christopher Tolkien), London: George Allen and Unwin.