| Reference number | NLB/44/630 |
| Alternative reference number | NLB/44 p379 |
| Level | Item |
| Title | Copy letter from Unknown Recipient to Dr J A Harkes FRS, National Physical Laboratory, Bushy House, Teddington, SW |
| Date | 5 October 1911 |
| Description | 'With reference to your application for them- Leiting for 1899, I regret to say that we do not possess this publication, and therefore I am unable to send you the volume you ask for.' |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |