| RefNo | HD/6/8/4/1/10 |
| Previous numbers | 93HD.7.14.10 |
| Level | Item |
| Title | Copy Dale to Sir John Edgell, Chief Hydrographer to the Navy |
| Date | 3 March 1945 |
| Description | Sending copies of his letters to the First Lord and to the Secretary of State for Air |
| Extent | 1p |
| Format | Carbon copy |
| AccessStatus | Open |
| AccessConditions | OPEN - but with some restrictions |