- FondsJeffreys - Papers and correspondence of Sir Harold Jeffreys
- SeriesG1-G190 - Correspondence
- SubseriesG130-G175 - Chronological Sequence
- FileG130 - 1914-1918
- FileG131 - 1921-1925
- FileG132 - 1926-1929
- FileG133 - 1931
- FileG134 - 1932
- FileG135 - 1933-1934
- FileG136 - 1938-1939
- FileG137 - 1940-1941
- FileG138 - 1944-1949
- 30 more...