- FondsJeffreysB - Papers of Bertha Jeffreys
- SeriesD - Publications
- SubseriesD1-D74 - Drafts and articles
- FileD21-D24 - 'Note on the Transparency of a Potential Barrier', Proceedings of the Cambridge Philosophical Society, vol. 38, part 4 (1942), 401-405
- ItemD21 - Proof; offprint
- ItemD22-D24 - 'Potential barriers 1942 + 1956'