| Level | Item |
| Reference Number (click to see whole series/group) | C6/37 |
| Extent | 1 file |
| Title | CASHIER'S DEPARTMENT FILE RELATING TO THE ADMINISTRATION OF WORK: CIPHER - GENERAL |
| Date | 1960 - 1971 |
| Description | Includes correspondence on the decision to abandon cipher. |
| Original Reference | Volume 5 |