Letter from [Francis James] Selby, Secretary, Advisory Committee for Aeronautics, National Physical Laboratory, Teddington, Essex, to [Robert] Harrison, Royal Society, Burlington House, W Discusses arrangements for the Engine Sub-Committee of the Advisory Committee for Aeronautics to meet at the Royal Society. Plans to meet on Tuesdays at 6 p.m., preferably in a smaller room. Mentions purchasing a cabinet for plans, intended to remain locked, with keys held by the attendant. Suggests using the same room as the Laboratory Committee meeting earlier that day for an upcoming meeting. 15 December 1916