- FondsJeffreysB - Papers of Bertha Jeffreys
- SeriesC - Research
- SubseriesC1-C4 - Postgraduate notebooks
- ItemC1 - Hardback notebook inscribed 'ABSTRACTS I' on front cover
- ItemC2 - Hardback notebook inscribed 'ABSTRACTS II' on front cover
- ItemC3 - Hardback notebook inscribed 'BERTHA SWIRLES' on front cover and 'RELATIVITY' on spine
- ItemC4 - Hardback notebook inscribed 'BERTHA SWIRLES' and labelled 'QUANTUM THEORY' on front cover