| RefNo | ACS/1/2/1/494 |
| AltRefNo | 547 |
| Level | Item |
| Title | Letter from [Alan Archibald Campbell] Swinton, to Messrs. Mullards Radio Valve Co. Ltd., 71 Standen Road, S. W. 18. |
| Creator | Swinton; Alan Archibald Campbell (1863-1930); British electrical engineer |
| Date | 26 February 1921 |
| Description | Seeks to be supplied with one "F" type transmitting valve with upright filament, as before. |
| Extent | 1p |
| Format | Typescript |
| PhysicalDescription | Carbon |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA8285 | Swinton; Alan Archibald Campbell (1863 - 1930); electrical engineer | 1863 - 1930 |