- FondsJeffreysB - Papers of Bertha Jeffreys
- SeriesC - Research
- SubseriesC61-C81 - Other research material
- FileC80-C81 - 'M. Walmsley'
- ItemC80 - Correspondence, mathematical problems, offprint 1960, 1965-7
- ItemC81 - Typescript draft on 'Lower Bound Calculations' and 'Bound stress of a Finite Electric Dipole'; calculations, including on E.E.G.