| RefNo | HF/1/6/3/9 |
| Previous numbers | 98HF.63.9.1-47 |
| Level | File |
| Title | Correspondence |
| Date | 1957 - 1959 |
| Description | Includes correspondence with American contacts and correspondence relating to the World Book Encyclopedia entry on penicillin. |
| Extent | 1 folder |
| Format | Carbon copies, typescript and manuscript documents |
| AccessStatus | Open |