- FondsJeffreys - Papers and correspondence of Sir Harold Jeffreys
- SeriesA1-A230 - Biographical Papers
- SubseriesA128-A153 - Family and Personal
- SubseriesA132-A146 - Family and personal correspondence
- FileA132-A135 - 'Invitations etc. Acknowledgements of photographs'
- FileA136 - Postcards
- FileA137 - Jeffreys's father
- FileA138 - Lambton Worm and the Drummonds of Fatfield
- FileA139 - Christmas card from Nancy and Ralph [Lapwood]
- FileA140 - Miscellaneous Correspondence
- FileA141 - Miscellaneous Correspondence
- FileA142 - Miscellaneous Correspondence
- 4 more...