| Reference number | NLB/42/764 |
| Alternative reference number | NLB/42 p485 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison [signed by Theodore E James] to Messrs Harrison & Sons |
| Date | 4 October 1910 |
| Description | 'Please change Prof F W Dyson's address in all your lists to:- Royal Observatory, Greenwich, SE.' |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |