Papers on possible gas attack, particularly by a phosgene bomb or mustard gas, including: notes by Private Secretaries to WSC on files in the possession of Group Captain Charles Anderson [former Personal Assistant to the Minister of Aircraft Production] including minutes on Anti-Gas Protection belonging to the Ministry of Aircraft Production [enclosed] and confidential files from the Air Ministry; also papers on the Assessment of a Gas Attack, phosgene or mustard gas, and suggested precautions for staff and civilians at MAP factories.