Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Mr Cuthbert Andrews; Red Lion Street, High Holborn, W.C.1. In reply to Mr Cuthbert Andrews' letter, informs him that the Soiree Committee would be glad to have his self-protected X-Ray tube for exhibition at the Conversazione on Wednesday 25 June. Informs him that no matter of an advertising nature is shown or distributed at the Conversazione. Encloses a schedule for Andrews to fill in and return. [Enclosure not present.] 29 May 1930