| RefNo | HD/6/8/5/2/4 |
| Previous numbers | 93HD.7.17.4 |
| Level | Item |
| Title | Copy Dale to Secretary, Institution of Electrical Engineers [W K Brasher] |
| Date | 20 April 1942 |
| Description | Regretting that he is unable to attend the 33rd Kelvin Lecture at the Institution of Electrical Engineers |
| Extent | 1p |
| Format | Carbon copy |
| AccessStatus | Open |
| AccessConditions | OPEN - but with some restrictions |