| Reference number | NLB/56/186 |
| Alternative reference number | NLB/56 p118 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to [Messrs Harrison & Sons] |
| Date | 9 December 1918 |
| Description | 'Certificates.
Herewith 6 new certificates for proofs (2 copies of each only). We shall continue to send "copy" from time to time, as ready.' |
| Extent | 1p |
| Format | Manuscript |
| Access status | Open |