| RefNo | ACS/1/2/1/254 |
| AltRefNo | 294 |
| Level | Item |
| Title | Letter from [Alan Archibald Campbell] Swinton, to Messrs. S. G. Brown, Ltd. |
| Creator | Swinton; Alan Archibald Campbell (1863-1930); British electrical engineer |
| Date | 23 December 1920 |
| Description | Confrims the order given by telephone for interior parts for 1, 000-ohm telephone receiver. |
| Extent | 1p |
| Format | Typescript |
| PhysicalDescription | Carbon |
| AccessStatus | Open |