| Reference number | NLB/50/491 |
| Alternative reference number | NLB/50 p289 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, to Messrs Harrison & Sons |
| Date | 17 July 1914 |
| Description | Utterly fails to understand how they can speak of his letter of 14 June as permission to insert an advertisement of National Physical Laboratory publications in the 'Proceedings [of the Royal Society]' B. |
| Extent | 1p |
| Format | Carbon |
| Physical description | Typescript |
| Access status | Open |