| Reference number | NLB/40/206 |
| Alternative reference number | NLB/40/ p124 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison to the Advertisement Department, "Nature" |
| Date | 3 May 1909 |
| Description | 'Please insert the enclosed advertisement in the two next issues of "Nature".' [no enclosure] |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |