Eight files of correspondence relating to visits and lecture tours abroad. These files relate to various trips Jefferson made to America, Canada, Portugal, Russia and Australia. While this series does not include all the numerous visits Jefferson made, they offer a good insight into Jefferson's activities and planning and cover most of Jefferson's longer tours. The tours usually involved lectures, visits to hospitals and personal engagements. The visits represented here are predominantly post-retirement. While Jefferson made many trips abroad before his retirement, after his retirement these tours allowed Jefferson to continue to play an important role in international neurosurgery. Ill health was a significant worry during these visits, which were often very tiring. Indeed it was during Jefferson's last trip to America in 1960 that he suffered a cardiac arrest and had to return to England. The correspondence includes invitations to Jefferson to give lectures and addresses, arrangements for travel and accommodation, and personal correspondence.
These files of correspondence include letters relating to both the professional and personal aspects of the visits. Although administrative papers dominate the files, there is much discussion of the lecture topics chosen by Jefferson and letters which highlight Jefferson's international reputation and relations with other significant neurosurgeons around the world.