| RefNo | MS/928/2/34 |
| Level | Item |
| Title | Letter from C T Brock & Company, South Norwood. London, to Charles Vernon Boys, Royal College of Science |
| Creator | C T Brock and Company (founded 1698) |
| Recipient | Boys; Sir Charles Vernon (1855-1944); British physicist and inventor |
| Date | 28 October 1892 |
| Description | Asking Boys for an expert opinion on the likelihood of their marine distress signals deteriorating in various environmental conditions. The pyrotechnic company intends to approach officials of the Peninsula and Oriental Steamship Company in order to get the system adopted. |
| Extent | 2p |
| Format | Manuscript |
| PhysicalDescription | On paper |
| AccessStatus | Open |