Letters relating to the poem Delhi. They include:
- Personal correspondence from friends and other writers such as J.F. Henry, Joy [Scovel] and Anne [Tibble], 1962-1966;
- Correspondence with publishers including; the B.B.C., Andre Deutsch Limited, Hodder and Stoghton Limited, Jonathan Cape, John Calder Ltd, Phoenix House Publications, Routledge and Kegan Paul Limited, Macmillan and Co Ltd, Weidenfeld and Nicholson, Oxford University Press, Faber and Faber and the Harville Press, 1964-1968;
- Correspondence from periodicals and literary magazines including, The Critical Quarterly, the British Weekly, Encounter, New Departures and The Listener, 1962-1963.