| RefNo | ACS/1/2/1/19 |
| AltRefNo | 23 |
| Level | Item |
| Title | Letter from [Alan Archibald Campbell] Swinton, Messrs. Muirhead & Co. Ltd. Elmere End, Beckenham, Kent |
| Creator | Swinton; Alan Archibald Campbell (1863-1930); British electrical engineer |
| Date | 21 October 1920 |
| Description | Requests a microphone transformer R. A. F. patterns, suitabe for wireless telephony. |
| 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 |