- FondsJeffreys - Papers and correspondence of Sir Harold Jeffreys
- SeriesG1-G190 - Correspondence
- SubseriesG1-G129 - Scientific Correspondence
- FileG4 - Birch, F.
- FileG5 - Bolt, B.A.
- FileG6, G7 - Bridgman, P.W.
- FileG8 - Brouwer, D.
- FileG9 - Brown, E.W.
- FileG10 - Bullard, E.C.
- FileG35 - Burridge, R.
- 30 more...