Letter from [Alan Archibald Campbell] Swinton, to J.W Williamson [Esquire] Acknowledges receipt of a previous letter explaining it has been difficult to reply sooner owing to his busy schedule. Regrets that all the dates proposed by Williamson for Council meetings of the Instrument Research Association are inconvenient for him as they clash with various Board meetings, and lists those that are suitable, in hope of being able to arrange a mutually convenient time. 31 December 1927