| Description | Includes invitations received from:
Cambridge University Engineering Department; Canadian Scientific Counsellor; Central Office of Information; Chemical Society; Chinese Charge d'Affaires; Christ Church, Oxford; Ciba Foundation; Ciba Laboratories Limited; City and Guilds of London Institute; N Coghill and K van Heyningen; College Club; Commonwealth Scientific Liaison Offices; Covent Garden Centre Limited; Cyanamid of Great Britain Limited. |