| Reference number | NLB/67/594 |
| Alternative reference number | NLB/67 p320 |
| Level | Item |
| Title | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Messrs E. Arnold and Co.; 41 Maddox Street, W.1. |
| Date | 26 January 1925 |
| Description | Gives Messrs E. Arnold and Co. permission to photograph and reproduce the diagram facing p. 141 of the Philosophical Transactions volume 56, amd illustrating Mr [Henry] Cavendish's paper on Factitious Air. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |