- FondsJeffreys - Papers and correspondence of Sir Harold Jeffreys
- SeriesA1-A230 - Biographical Papers
- SubseriesA118-A127 - Certificates
- 3 more...
- ItemA121 - University of Durham Senior Local Examination July 1906
- ItemA122 - University of Durham Senior Local Examination July 1907
- ItemA123 - University of London certificate
- ItemA124 - Board of Education certificate
- ItemA125 - University of London certificate
- ItemA126 - University of Durham certificate
- ItemA127 - American Geophysical Union Certificate of Corresponding Membership, 18 May 1944