| Reference number | NLB/54/187 |
| Alternative reference number | NLB/54 p103 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Messrs Robert Jackson & Co. |
| Date | 26 February 1917 |
| Description | 'In reply to your letter of February 24th will you please take note of the printed notice on every order form, that no order is valid unless on an official order form signed by Mr. Robert Harrison.' |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |