- FondsJeffreysB - Papers of Bertha Jeffreys
- SeriesD - Publications
- SubseriesD1-D74 - Drafts and articles
- FileD54-D65 - 'A Q-rious tale: the origin of the Parameter Q in electromagnetism', Q. Jl R. astr. Soc. vol 26 (1985), 51-52
- ItemD54-D60 - Correspondence on Q
- ItemD61-D63 - 'Correspondence on Q'
- ItemD64 - Typescript draft; proof; offprint (2 copies, one annotated)
- ItemD65 - Photocopy background information on Q