- FondsJeffreys - Papers and correspondence of Sir Harold Jeffreys
- SeriesA1-A230 - Biographical Papers
- SubseriesA128-A153 - Family and Personal
- SubseriesA147-A153 - Postcards
- FileA147-A151 - 'Various postcards sent to H.J. circa 1920'
- FileA152 - Postcards and greetings cards sent by colleagues in the USSR
- FileA153 - Miscellaneous postcards