- FondsJeffreysB - Papers of Bertha Jeffreys
- SeriesC - Research
- SubseriesC5-C60 - Research folders
- FileC35-C37 - 'Gray & Wills method for J-J coupling 1938'
- ItemC35 - Letter from E.H.S. Burhop, 31 March, enclosing offprint of 'The relativistic theory of the Auger Effect' by Burhop and H.S.W. Massey, Proceedings of the Royal Society A vol 153 (1936)
- ItemC36 - Manuscript drafts on 'The interaction of two electrons taking into account retardation in the self-consistent field method' and the Gray and Wills method
- ItemC37 - Manuscript calculations