- FondsJeffreysB - Papers of Bertha Jeffreys
- SeriesH - History of science and other interests
- SubseriesH1-H108 - History of Science
- FileH18-H28 - Paul Adrien Maurice Dirac (1902-1984)
- ItemH18 - Correspondence
- ItemH19 - Dirac Memorial Meeting, St John's College, Cambridge, 19 April 1985
- ItemH20 - Recollections of Dirac for 'The Eagle' (St John's College journal) by Jeffreys
- ItemH21 - Correspondence
- ItemH22 - Commemoration of Dirac, Westminster Abey, 13 November 1995
- 4 more...