| Reference number | NLB/30/840 |
| Alternative reference number | NLB/30 p484 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, to J V Ilington, General Post Office, Dublin |
| Date | 30 May 1905 |
| Description | Acknowledges Ilington's letter of 25 May and replies that the construction of calculating machines belongs to the realm of technical invention controlled by patents, and hardly comes within the scope of the activities of the Society. Returns with thanks Ilington's statement of the scope of his machine [not enclosed]. |
| Extent | 1p |
| Format | Carbon |
| Physical description | Typescript |
| Access status | Open |