| RefNo | NLB/7/86 | 
| AltRefNo | NLB/7 p38 | 
| Level | Item | 
| Title | Copy letter from an unknown correspondent, to Messrs Harrison & Sons | 
| Date | 26 November 1892 | 
| Description | Asks the Messrs to make an electro of the block illustrating Mr [Charles Vernon] Boy's Cavendish apparatus, 'Proceedings of the Royal Society', volume 46, page 264, and to send it with the account to the Cambridge Engraving Company, St Tibbs Row, Cambridge. | 
| Extent | 1p | 
| Format | Carbon | 
| AccessStatus | Open | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA8138 | Boys; Sir; Charles Vernon (1855 - 1944); physicist and inventor | 1855 - 1944 |