Correspondence with Cambridge University, including the report of the Cambridge University Observatories Syndicate for the year ending 30 September 1968; correspondence with R.O. Redman; a report on future policy for the Observatories, dated 23 January 1969; photographs of NGC 419 in the Small Magellanic Cloud, from the Radcliffe Observatory, Pretoria; reports of the Observatories Syndicate for the years ending 30 September 1969 and 30 September 1970; correspondence with G. Burbidge of the University of California, San Diego, regarding the Fowler Symposium to be held at the Institute of Theoretical Astronomy, Cambridge, on 19-21 July 1971; correspondence with P.C.N. Vaugon of the Institute of Theoretical Astronomy, Cambridge; and correspondence with Sir Martin Ryle of the Cavendish Laboratory, Cambridge.