| Reference number | NLB/57/781 |
| Alternative reference number | NLB/57p443 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to the Manager, the British Arc Welding Co Ltd; Hope Street, Cardiff |
| Date | 3 February 1920 |
| Description | Advises that no papers are being read before the Royal Society on the subject of 'Rhinstin's Quantum Theory,' and they are therefore unable to give him the information he has requested. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |