Includes correspondence with A. R. K. Watkinson, Academic Press Inc.; A. H. Waynick, Office of Naval Research; G. K. Stoltarov, University of Newcastle upon Tyne; Nicholas M. Lewis; H. G. Flegg, Open University; D. F. Barton, University of Cambridge; Jerome H. Saltzer, MIT; Peter Landshoff, University of Cambridge; J. D. Roberts, Churchill College; M. C. Wooldridge, Central Computer Agency; F. J. MacWilliams, Bell Laboratories; J. S. Knowles, University of Aberdeen; J. F. Coales, University of Cambridge; Sir William Hawthorne, University of Cambridge; Sir Robert Cockburn, Churchill College; T. William Olle; Sir Douglas Logan, Association of Commonwealth Universities; J. A. Ratcliffe; Alan J. Perlis, Yale; David Pears, Reddie & Grose Chartered Patent Agents; Peter T. Kirstein, University of London; William P. Lidinsky, Argonne National Laboratory; E. Gelenbe, IRIA; John G. Herriot, Stanford; E. Fredkin, MIT; W. D. Maurer, Berkeley; John Ellenby, University of Edinburgh; Trevor Pearcey, Caulfield Institute of Technology; Samuel Falaki, UCLA; J. W. Linnett, University of Cambridge; M. M. Lehman, Imperial College; F. J. Corbató, MIT; G. F. Mills, University of Cambridge Estate Management; Barry N. Jones; Harry Whitfield, Groningen University; S. D. Chopra, Kurushetra University; R. T. Bogg, University of Cambridge Assistant Staff Office; Richard P. Parkins, University of Cambridge; M. T. Hills, University of Essex; Muhammad Ashraf; Guy G. Boulaye, Université Paris-Dauphine; R. K. Saraf, Vidya Vihar Campus, Pilani; Paolo Sipala, University of Trieste; Arthur Llewelyn, DTI Computer Aided Design Centre; Pekka Pelkonen, University of Kuopio; M. Maunder, Infotech Education Ltd; Lucy Slater, University of Cambridge; Richard F. Shepherd, Chelsea College; Torkel Weis-Fogh, University of Cambridge Department of Zoology; L. J. Rotenberg, MIT; Ronald G. Stansfield, City University; Carlos Christensen, Christensen and Willett Associates; Peter J. Brown, University of Kent; Charles Rattray; Montgomery Phister Jr; V. M. Baltac, Bucharest; Jack Belzer, University of Pittsburgh; Jeffrey D. Ullman, Princeton; Peter J. Denning, Princeton; C. Kearton; Robin R. Green; Ivor Catt; Richard Pankhurst, University of Cambridge Department of Botany; Andrew Campbell, Interdata Ltd; Frnklin F. Kuo, Office of (US) Naval Research; R. Greaves, University of Cambridge Department of Pathology; J. Cotton, Plessey Telecommunications; Arthur Gray, CUP; Thomas Massam, University of Bologna; J. W. S. Cassels, University of Cambridge; B. R. Hale; Maurice Adler; J. H. Horlock, University of Cambridge; Glen Mules, University of Birmingham; K. B. C. Saxena, Central Electronics Engineering Research Institute Pilani; David Winter, University of Cambridge Careers Advisory Service; J. M. M. Pinkerton, ICL; F. H. J. Cornish, University of York; S. Bootle, Univac; P. E. West, British Railways; Smil Ruhman, Weizmann Institute of Science; Paul Touzeau, IRIA; Ranadhir Roy; Earl C. Joseph, Univac; E. Goto, University of Tokyo; Ewan S. Page, University of Newcastle upon Tyne; Terence W. Rogers, IBM; Darrel Ince, Bangor; J. P. Verjus, Université de Rennes; R. Riley, University of Cambridge Plant Breeding Institute; Donald Davis, NPL Teddington; E. P. Wraight, University of Cambridge Department of Radiotherapeutics; J. F. Tauber, IBM; P. M. Lee, King's College Cambridge; John M. Bennett, University of Sydney; Con Driscoll, Rank Xerox; R. C. Slater, Institute of electronic and Radio Engineers; Louis Fein; P. Hammersley, United Cambridge Hospitals.