Letter from J. M Gledhill, Ashton Road, Openshaw, Manchester, to [Robert] Harrison [Esquire], Burlington House, London, W Acknowledges his appointment to the Executive Committee of the National Physical Laboratory by the Royal Society but regrets that due to a busy schedule and numerous engagements, he cannot commit to the attendance requirements. Requests to be excused from the position. Includes three enclosures. 20 December 1910