Chiefly of an academic nature, with some personal news. The letters discuss matters of mutual research interest, source materials, conferences, MC’s ongoing support of EK’s work etc. Chiefly incoming letters from MC to EK, also some of EK’s letters to MC. The file also includes the following: a report by MC on an essay by EK on ‘Peterborough Abbey, 1086-1310: A Study in the Land Market’, submitted by EK for an Ellen McArthur Prize, c. 1969; a review by EK of MC, ‘Anglo-Norman England 1066-1166’, Basil Blackwell 1986; a menu for a lunch held at Clare Hall, Cambridge in honour of MC, 1985, signed by various guests including MC and EK [the lunch saw the presentation of MC's Festschrift]; notes by EK of MC’s talk to his special subject group [Sheffield], 23 January 1989.