| Reference number | NLB/61/31 |
| Alternative reference number | NLB/61 p20 |
| Level | Item |
| Title | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Mr. Haine; 29 Hereford Road, Bayswater |
| Date | 29 April 1921 |
| Description | Writes on the subject of the Epidiascope Lantern. Notes that it consumes a great deal of current and asks whether the leads can be taken from the circuit which supplies the electric stove in his old room, allowing them to use current at a much lower rate. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |