Copy letter from Herbert Rix, to Professor Michael Foster, [Royal Society] 'Dear Sir, Where do you mean to have the Soirée Commee [Committee], to suggest names & make arrangements for the June Soirée? The date fixed, you will remember is June 19th, & I suppose you would like the card to be posted 3 or 4 weeks before? Yours obediently H Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 30 April 1889