| RefNo | ACS/1/2/4/525 | 
| AltRefNo | 664 | 
| Level | Item | 
| Title | Letter from [Alan Archibald Campbell] Swinton, to Sir Dugald Clerk | 
| Creator | Swinton; Alan Archibald Campbell (1863-1930); British electrical engineer | 
| Date | 10 December 1929 | 
| Description | Written on Swinton’s behalf by his Secretary, A. W. Langley. Acknowledges receipt of a previous letter pertaining to television patents and for the report concerning the Nipkow and Baird patents. Returns all the patent specifications sent with a previous letter [enclosures not present]. | 
| 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 | 
| NA7825 | Clerk; Sir; Dugald (1854 - 1932); mechanical engineer | 1854 - 1932 |