- JeffreysB/E/E1-E53
- Subseries
- 1930–1969 (Circa)
Part of Papers of Bertha Jeffreys
E1-E8 University of Manchester
E9-E53 University of Cambridge. The bulk of this material is manuscript lecture notes, sometimes paginated in sequences though often with unnumbered pages intercalated. It appears from the variety of inks, paper sizes etc that many lecture notes were reused over years.