Letter from Arthur [William Gerrard] Bagshawe, Sleeping Sickness Bureau, The Royal Society, Burlington House, London, W, to Mr [Robert] Harrison, [Royal Soicety] Mentions a delay in the readiness of rooms in the Imperial Institute for occupation. requests permission to remain until 24 June, instead of the initially planned 17 June, due to dependencies on the Office of Works. 23 May 1912