| Reference number | NLB/4/331 |
| Alternative reference number | NLB/4 p138 |
| Level | Item |
| Title | Copy letter from an unknown correspondent, to Messrs Dulau & Company |
| Date | 22 April 1890 |
| Description | 'We shall be glad if you will look out for a copy of Todhunters History of Mathematical Theories of Attraction, & let us know when you have one.' |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |