| Reference number | NLB/50/42 |
| Alternative reference number | NLB/50 p24 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, to The Western Electric Company Limited |
| Date | 21 April 1914 |
| Description | The lecture on 'Improvement in long distance telephony' by Professor Fleming was not delivered at the Royal Society, but the Royal Institution. |
| Extent | 1p |
| Format | Carbon |
| Physical description | Typescript |
| Access status | Open |