| Reference number | NLB/50/51 |
| Alternative reference number | NLB/50 p29 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, to H A Humphrey, 38 Victoria Street, S.W. |
| Date | 22 April 1914 |
| Description | In April last year it was suggested that he might exhibit his 'Humphrey pump' at the Soiree, but he stated that he had no model ready. If he now has one available for exhibition at the forthcoming Soiree, the Exhibits Committee will be happy to include it in the programme. |
| Extent | 1p |
| Format | Carbon |
| Physical description | Typescript |
| Access status | Open |