- FondsJeffreys - Papers and correspondence of Sir Harold Jeffreys
- SeriesA1-A230 - Biographical Papers
- SubseriesA34-A117 - Career, Honours and Awards
- FileA90-A109A - 90th birthday
- FileA90 - Letters kept together with treasury tag
- FileA91-A107 - Alphabetical sequence of greetings cards, etc
- FileA108 - Bound copy of paper by A. Marussi presented in celebration of Jeffreys's 90th birthday
- FileA109 - Bound presentation document from the Schmidt Institute of Physics of the Earth, Moscow, USSR, congratulating Jeffreys on his birthday
- ItemA109A - Geophysical Journal of the Royal Astronomical Society volume 64, number 1 January 1981