Subseries STERN 2/10 - Correspondence, Jun 1940 - Apr 1941, relating to the design and testing of the TOG 1 tank and TOG 2 tank

File of correspondence between Sir William Ashbee Tritton of William Foster and Company, Lincoln, Lincolnshire, Technical Advisor, Special Vehicle Development Committee, Ministry of Supply; W Rigby, William Foster and Company, Lincoln, Lincolnshire, Technical Advisor, Special Vehicle Development Committee, Ministry of Supply; Maj Kenneth P Symes, Special Vehicle Development Committee, Ministry of Supply and Stern relating to the mechanical design, armour, armament and testing of the TOG 1 and TOG 2 tanks, including a report by Stern for submission to the Tank Board, summarising the technical development of the TOG 1 and TOG 2 tanks and detailing design considerations for the TOG 3 tank, bearing manuscript emendations by Tritton, Apr 1941 ['TOG' - The Old Gang, the informal name for the Special Vehicle Development Committee members, some of whom had worked on tank development during World War One].