Correspondence with Imperial College, London Correspondence with Dr GL Kington, on Simon's early work on chabazite; with Prof PMS Blackett, on the purchase of electromagnets, the funding of research and the advancement of Russian technology; with Prof AR Ubbelohde, on Simon contributing to a meeting of the Faraday Society into temperature research and with Dr M Blackman, on Simon acting as an external PhD examiner to PL Smith and EL Foster and on research into the heat capacity of the 'diamond' form of ice 1954-1956