| Reference number | NLB/73/228 |
| Alternative reference number | NLB/73 p113 |
| Level | Item |
| Title | Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Secretary, Aeronautical Research Committee, National Physical Laboratory |
| Date | 17 March 1931 |
| Description | Regrets to inform the Aeronautical Research Committee cannot book a room for 28 April as another Society has already booked it [The Viking Society]. |
| Extent | 1p |
| Format | Carbon |
| Physical description | Past repair with tape. |
| Access status | Open |
| Related records in the catalogue | NLB/73/193 |
| NLB/73/193 |