| RefNo | HD/6/8/3/1/3 |
| Previous numbers | 93HD.7.11.3 |
| Level | Item |
| Title | Copy Dale to Sir Edward V Appleton, Department of Scientific and Industrial Research |
| Date | 26 February 1941 |
| Description | Thanking Appleton for letting him know about arrangements [at the National Physical Laboratory] while Darwin is away |
| Extent | 1p |
| Format | Carbon copy |
| AccessStatus | Open |
| AccessConditions | OPEN - but with some restrictions |