| Reference number | NLB/68/407 |
| Alternative reference number | NLB/68 p219 |
| Level | Item |
| Title | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Director of the National Physical Laboratory; Teddington |
| Date | 10 July 1925 |
| Description | Discusses which exhibits that the Royal Society could accept for the Soirees, and settles on the Guild Colorimeter and Dr [Walter] Rosenhain's crystals. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |