| Reference number | NLB/56/829 |
| Alternative reference number | NLB/56 p469 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Messrs Haine & Co. |
| Date | 3 June 1919 |
| Description | 'Will you please arrange to send someone here on Monday, June 16, to run leads into the Meeting Room for 200 volts (20 amperes).' |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |