Records of the Ordinary Meetings of the Geological Society of London, 1807-current, comprising:

Minutes of Ordinary Meetings, 1807-current; Printed notices and meetings cards giving dates of the forthcoming Ordinary Meetings and later other meetings organised by the Society and its specialist groups, 1810-1996 [incomplete]; Agendas for Ordinary Meetings, 1855-current; Attendance books containing signatures of Fellows and their visitors attending Ordinary Meetings of the Society, 1858-1991 [incomplete].

Records of the Centre for Computing Services (formerly Computer Unit and Computer Centre) of Imperial College, 1955-1980, including annual reports and research reports, 1965; newsletters, 1971; Advisory Committee papers, 1964-1967; papers of Sir Patrick Linstead, Rector, relating to the department, 1955-1963; opening of the unit, 1964-1965; future of computing and organisation of the unit, 1964-1976; working party minutes on the separation of the centre from the Department of Computing and Control, 1974 (KCU); Rectors' correspondence relating to the Computer Centre, 1971-1980, concerning separation from the Department of Computing and Control, headship and future of the centre (KCUB);
Rectors' correspondence relating to the Computing Department, 1966-1981, concerning headship of the department, Chairs of Computing Science and Software Engineering, general matters (KCUC); papers relating to the Department of Computing and Control (later Department of Computing), 1970-1988, including BSc and MSc courses, 1963-1986; research reports, 1970-1971; opening of the Wiliam Penney Laboratory, 1988; Kobler Unit for the Management of Information Technology, 1984-1988; annual reports, research reports (KCUD).