| Reference number | NLB/67/912 |
| Alternative reference number | NLB/67 p490 |
| Level | Item |
| Title | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr [Edward Neville da Costa] Andrade; Artillery College, Woolwich, S.E.18. |
| Date | 6 April 1925 |
| Description | 'I have to acknowledge with thanks the receipt of your letter of the 3rd instant, enclosing two photographs of the air pump and the electric machine which you are kindly presenting to the Society.' |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |