This section includes some fascinating memorabilia from her study visit to Georg-August Universität, Göttingen, Germany, 1927-1928 but the bulk of the material relates to two events, a Symposium on Computer Science at Girton College Cambridge, August 1969, held as part of the celebrations of the centenary of the foundation of the College, of which Jeffreys was the organiser, and the 48th International Astronomical Union Symposium on 'Rotation of the Earth', held at Morioka, Japan in May 1971 to which Jeffreys accompanied her husband. Her continued interest in developments in science is illustrated by her attendance at the age of 94 at the International Centennial Symposium on the Electron, Cambridge, September 1997.
For letters home during visits abroad, often with detailed descriptions of activities, see section J. For newspaper cuttings from Jeffrey's visit to Australia in 1959 see A221.
