Correspondence between Leonard Hawkes and the Royal Society General correspondence, largely on a meeting with Sir Cyril Hinshelwood. Letters to and from the President, Cyril Hinshelwood, and the Assistant Secretary, David Christie Martin. The original file featured the typed name and address: 'Professor L. Hawkes, F.R.S., 26 Moor Lane, Rickmansworth, Hertfordshire'. 1 September 1956-24 September 1959