| Reference number | NLB/62/265 |
| Alternative reference number | NLB/62 p150 |
| Level | Item |
| Title | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Gerald Kretzschmar Esquire; Box 3306, Johannesburg, South Africa |
| Date | 14 January 1922 |
| Description | Regrets that he cannot give Mr. Gerald Kretzschmar the information he asked for and suggests he write to Professor Kamerlingh Onnes of the University of Leyden, a recognised authority on the subject [unspecified]. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |