| Reference number | NLB/70/743 |
| Alternative reference number | NLB/70 p387 |
| Level | Item |
| Title | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr P. Hall; 137 Harley Street, W.1. |
| Date | 19 July 1927 |
| Description | Gives Dr P. Hall permission to reproduce the chart that originally appeared in 'Phases of Modern Science', published by the Royal Society as part of the British Empire Exhibition, in Hall's new book 'Ultra-Violet Rays in the Treatment and Cure of Disease'. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |