| Reference number | NLB/57/509 |
| Alternative reference number | NLB/57p287 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir David Prain, FRS, CMG |
| Date | 20 November 1919 |
| Description | Requests Sir David Prain, FRS, writes an obituary for the 'Proceedings of the Royal Society' for Professor JWH [James William Helenus] Trail, FRS, who has died. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |