| Reference number | NLB/55/924 |
| Alternative reference number | NLB/55 p507 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to A Hubert Cox Esq. |
| Date | 25 October 1918 |
| Description | Letter regarding illustrations to a report on Magnetic Disturbance and Geological Structure |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |