- FondsJeffreysB - Papers of Bertha Jeffreys
- SeriesD - Publications
- SubseriesD1-D74 - Drafts and articles
- FileD7-D11 - 'Book on Mechanics with DRH [Hartree] 1931'
- ItemD7 - 'Chapter 2. Vectors'
- ItemD8 - 'Chapter 2. Vectors'
- ItemD9 - 'Chapter 4. The Laws of Motion'
- ItemD10 - 'Chapter 9. Motion of a System of Particles'
- ItemD11 - Manuscript notes paginated 1-5, 20-35 found therewith