Papers concerning factories and the Ministry of Munitions, 1916-1918, (fols. 1-92) 'National Shell Factories: central purchase proposals, materials, machinery etc. and allied matters', 1916; (fols. 93-101) correspondence with Lord Chetwynd, Chilwell National Shell Filling Factory, 1916; (fols. 102-164) 'Investigations of costs: policy controlled establishments, Aug.-Sept. 1916', discussions between the Ministry of Munitions, Admiralty and War Office; (fols. 165-178) correspondence,…