The indispensable bibliography of writings by and about F. R. and Q. D. Leavis (up to 1984) is M. B. Kinch, William Baker and John Kimber, F. R. Leavis and Q. D. Leavis: An Annotated Bibliography (New York: Garland, 1989). The standard biography is Ian MacKillop, F. R. Leavis: A Life in Criticism (London: Allen Lane, 1995). This may be supplemented by Denys Thompson, ed., The Leavises: Recollections and Impressions (Cambridge University Press, 1984), and ‘F. R. Leavis Special Issue: Reminiscences and Revaluations’, Cambridge Quarterly 25 (1996). The best introduction to Leavis's work is Michael Bell, F. R. Leavis (London: Routledge, 1988). A good recent brief account is Richard Storer, F. R. Leavis (London: Routledge, 2009). For works by and on C. P. Snow, see the note on further reading in my Canto edition of Snow's Two Cultures (Cambridge University Press, 1993); for references to more recent discussions of Snow, see Nicolas Tredell, C. P. Snow: The Dynamics of Hope (London: I. B. Tauris, 2012).

Several of the contributions to the ‘Snow–Leavis debate’ were collected in Cultures in Conflict; Perspectives on the Snow–Leavis Controversy, ed. David K. Cornelius and Edwin St Vincent (Chicago, IL: Scott, Foresman, 1964). For an excellent and fully documented discussion of the ‘two cultures’ theme and its place in British culture, see Guy Ortolano, The Two Cultures Controversy: Science, Literature, and Cultural Politics in Postwar Britain (Cambridge University Press, 2009).