| RefNo | HF/1/4/1/3 | 
| Previous numbers | 98HF.56.3.1-52 | 
| Level | File | 
| Title | Correspondence and concerning various antibiotic samples | 
| Date | 1949 - 1952 | 
| Description | Substances tested include ayfivin hydrochloride and bacitracin. | 
| Extent | 1 folder | 
| Format | Manuscript and typescript documents | 
| AccessStatus | Open |