World War II Tank Production 1938-41: An archive of 48 letters mainly between the British War Offi ce, the Ministry of Supply and John Fowler & Co. (Leeds) Ltd, manufacturer of the A12 Tank, many of which are marked 'Secret'. Includes letters signed by Major- General A.E.Davidson (Director of Mechanisation, War Offi ce), Brigadier G.Le Q.Martell (Commander of the Royal Armoured Corps), Colonel W.H.York (Armaments Inspection Dept), R.F.Dunsterville, etc. with a letter & telegram regarding the performance of the tanks in fi ghting in Flanders & the Middle East. A most important group of documents detailing the problems of armaments production and their increasing importance in the opening phases of the War