- FondsJeffreys - Papers and correspondence of Sir Harold Jeffreys
- SeriesC1-C35 - Lectures
- SubseriesC7-C29 - Various addresses
- 7 more...
- FileC14 - Nutation and Nutation & variation of latitude
- FileC15 - Origin of Solar System
- FileC16 - Discussion on Planetary Atmospheres - Introduction
- FileC17 - The Porridge Problem
- FileC17a - The revision of seismological tables
- FileC18 - Saturn
- FileC19 - Scientific Method and Philosophy
- FileC20 - The simple pendulum [?in] the resonance case
- FileC21 - The strength of the Earth
- 7 more...