| RefNo | HF/1/4/1/7 | 
| Previous numbers | 98HF.56.8.1-3; 98HF.56.9.1-12 | 
| Level | File | 
| Title | Correspondence concerning flavoryzine, the bacillus germicide H1 and gramicidin | 
| Date | 1945 - 1950 | 
| Extent | 1 folder | 
| Format | Typescript and printed documents | 
| AccessStatus | Open |