| Reference number | NLB/4/358 |
| Alternative reference number | NLB/4 p151 |
| Level | Item |
| Title | Copy letter from an unknown correspondent, to Mr Collings, 172 Strand |
| Date | 30 April 1890 |
| Description | Herewith the correspondent sends five diagrams and one large sheet diagram to illustrate a paper by Messrs Thomson and Searle for the 'Philosophical Transactions [of the Royal Society]'. For the large diagram he would like an estimate for black on white either wood or process. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |