Once Upon Another Time is Jessica Douglas-Home’s account of the part she herself played in an extraordinary private enterprise which came to be known as ‘the Oxford visitors’. The story began with Julius Tomin, a philosophy teacher who had been ejected from his university position in Czechoslovakia. He continued openly, but unofficially, to teach courses for students expelled from Charles University on political grounds. He and his students were subjected to violence and harassment, and the strict control of access to books imposed by the authorities led to their losing touch entirely with the course of learning in the West. In 1979 Tomin wrote a letter to many Western universities, inviting lecturers to visit and speak at his seminars. Oxford was the only university to respond.