| Reference number | NLB/63/895 |
| Alternative reference number | NLB/63 p511 |
| Level | Item |
| Title | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to H. Hartridge Esq. |
| Date | 19 January 1923 |
| Description | Letter regarding the reading of Hartridge's paper on "The coincidence method for the wave-length measurement of absorption bands" |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |