- Jeffreys/B1-B316/B45-B52A
- Subseries
- 1902–1915
Seven small black bound notebooks (B.45-B.51)and one notebook in red covers (B.52) used by Jeffreys for natural history notes. Jeffreys natural history interests are reflected in early publications on the vegetation of Durham coal measure fells. Much of the information is taken from an unpublished article by Bertha Swirles Jeffreys 'Harold Jeffreys, F.R.S., Naturalist, (1891-1989)'.