| Reference number | NLB/43/303 |
| Alternative reference number | NLB/43 p185 |
| Level | Item |
| Title | Copy letter from Robert William Frederick Harrison, to Professor Hugh Longbourne Callendar, Fellow of the Royal Society |
| Date | 9 December 1910 |
| Description | Sir Joseph Larmor has marked the paper by Messrs Campbell and Dye on 'Sound Vibrations of very high Frequency produced by Electric Sparks' for reading. Larmor has made no note as to its publication and presumably he'd like Callendar's opinion. |
| Extent | 1p |
| Format | Carbon |
| Physical description | Typescript |
| Access status | Open |