- FondsJeffreys - Papers and correspondence of Sir Harold Jeffreys
- SeriesA1-A230 - Biographical Papers
- SubseriesA34-A117 - Career, Honours and Awards
- FileA36-A65 - St John's College Cambridge
- FileA36-A37 - 'Burke-Fox Scott Heitland Correspondence with Tutors 1910'
- ItemA36 - Photocopies of two letters of Jeffreys and one letter about him from tutorial files
- ItemA37 - 4 Letters to Jeffreys, 1 in original envelope