Box containing three folders of letters and documents and six books - one folder each concerning Pneumatic Dynamite Guns 1887, Slipway at Portsmouth 1896 & 'Colossus' 1883 - 1905. Six books entitled: 'Sails - Chief Draftsman', 'D.N.C. Department Statement of Stability 1875 - 1885 Book A', 'D.N.C. Department Statement of Stability 1875 - 1885 Book C', 'Cordage Tables', 'Boilers - Report on Deterioration' & 'Constructive Department - Statement of Stability Armoured Ships & Troop Ships 1878 - 1914 Book 1'.