| Reference number | NLB/62/16 |
| Alternative reference number | NLB/62 p10 |
| Level | Item |
| Title | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Lieutenant Colonel [James William] Gifford |
| Date | 15 November 1921 |
| Description | Informs Lieutenant Colonel [James William] Gifford that he is returning his paper, 'Atmospheric presure and refractive indices with a corresponding table of indices of optical glass', for modification. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |