| Reference number | NLB/60/668 |
| Alternative reference number | NLB/60 p376 |
| Level | Item |
| Title | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Dr. Martin Knudsen; Det Kongelige Danske Videnskabernes Sekskab, Copenhagen |
| Date | 11 March 1921 |
| Description | Informs Dr. Martin Knudsen that he is forwarding six additional copies of the Report of the Proceedings at the Conference on the International Catalogue of Scientific Literature under separate cover. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |