| Reference number | NLB/40/639 |
| Alternative reference number | NLB/40/ p384 |
| Level | Item |
| Title | Copy letter from John Rose Bradford to G S West and B M Griffiths |
| Date | 12 July 1909 |
| Description | "Hillhousia mirabilis, a giant sulphur bacterium." |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |