Joseph Needham’s file title is ‘Aylen’s C and t/B’. It relates to an Omnibus programme broadcast on 23 Apr. 1968 entitled ‘China and the Barbarians’ produced by Leo Aylen. Contributors were Denis Twitchett, Joseph Needham and Jerome Ch’en. The file includes correspondence (many are from friends reacting to the programme), handwritten notes, a script and list of images shown, newspaper clippings and administrative papers.