Correspondence on invitations to Simon to deliver lectures and talks Correspondence with: Institute of Electrical Engineers (Oxford District Meeting); Imperial College Chemical Society; Institute of Statistics, Oxford University; Physical Society (on delivering the Guthrie Lecture); Institute of Electrical Engineers (on delivering the Kelvin lecture); Royal College of Science Mathematical and Physical Society; Nottinghamshire Education Committee; Institute of Education, Leeds University; Institution of Production Engineers; NIFES copy of closing address, 'Current Practice in Fuel Efficiency'; Institut fur Thermodynamik, Hanover; Physikalisches Institut, Basel; California Institute of Technology, Pasadena; Department of Physics, University of Aberystwyth; Institute of Metals; National Peace Council; Bolton Technical College; Oxford Business School; National Physical Laboratory; Swinton Conservative College, Yorkshire; Physical Society, Queen Mary College, London; Department of Physics, University of Sheffield; Department of Mathematics, Manchester University; Manchester Oil Refinery; West Cumberland Society of Chemists and Engineers and the Physics Department, University College of North Wales. Topics of the talks included: Low Temperature Physics, Thermodynamics, Nuclear Power and relations between Science and Industry. 1953-1956