- FondsJeffreysB - Papers of Bertha Jeffreys
- SeriesC - Research
- SubseriesC5-C60 - Research folders
- FileC8-C13 - 'Polarisation of atomic cores' and 'Internal conversion'
- ItemC8 - Explanatory note by Jeffreys, beginning 'The polarisation of atomic cores was before Quantum Mechanics (just!)'
- ItemC9 - 'Some applications of the theory of perturbations in the Quantum Mechanics', Jeffreys's Ph.D. thesis
- ItemC10 - Offprint of 'The internal conversion coefficient for radium C' by H.R. Hulme, Proceedings of the Royal Society A, vol 138 (1932), with manuscript notes by Jeffreys at front
- ItemC11 - Later manuscript calculations
- ItemC12-C13 - Offprints by others, some with minor annotations by Jeffreys