Correspondents: surnames Clo-Deo
- Alan Clodd, 1980-1996. Correspondence of Gascoyne with Alan Clodd as founder of the Enitharmon Press is at Add MS 89011/6/4. Later correspondence, after he had transferred the press to Stephen Stuart-Smith, a copy of the order of service for Clodd’s funeral on 6 Jan 2003, the address given there by Stephen Stuart-Smith, and other cuttings of obituaries, are included here.
- Ken Coburn, 1986-1987. Relating to Gascoyne's poem for a ‘Great poets anthology’, see also Beatriz Lagos.
- Richard Coenen, 1998.
- John Michael Cohen, 1982-1983.
- Steven Coles, 1998.
- N. R. Collard, n.d.
- Elizabeth Collins, 1990.
- Jean-Pierre Colombi, 1986-1989.
- Paul Condon, n.d.
- R. L. Cook, of the Lomond Press, 1980.
- William Cookson, of Agenda, 1982-1991. Also a letter from Peter Dale, assistant editor.
- C. K. Cooper and others, of Soluble Fish, 1985.
- Helen Cooper, of SuperReal, 1992.
- Victor Corti, 1983.
- Elizabeth Cowling, of the University of Edinburgh, 1988
- David H. Cox, of the University of Sheffield, 1979.
- Dennis Cox, 1985.
- Ruth Craft, 1987.
- Hugh Crole, 1987.
- Ada Margaret Crozier, known as 'Biddy', n.d.
- Joaquín Nin-Culmell, 1993.
- John Cumming, of The Tablet, 1973-1986.
- Randy lee Cutler, 1992.
- Georges Daillart, 1985.
- Charles Darwent-Damant, 1979
- Hilary Davies, of Argo, 1980.
- Vanessa Davies, 1986-1987.
- Beatrice Dawson, known as ‘Bumble’, 1956-1958, n.d.
- Solange Dayras, 1982-1989. With several of her poems, unaccompanied by correspondence.
- Mary V. Dearborn, 2001.
- Marc Décimo, 2001.
- Michel Deguy, n.d.
- Stuart Dehn, n.d. Poems without accompanying letter.
- Alain Delaunois, 1985-1991.
- Monique Delcourt, 1980
- Bernard Delvaille, 1979-1988.
- Alan Denson, 1954-1995.
- Michel Déon, 1992-1995, n.d