Papers relating to his military service, 1938-[1943], 1948-1951, principally comprising papers relating to anti-aircraft searchlight training, 1938-[1943], including 'The training of the anti-aircraft searchlight spotter' by Capt Lancelot Edgar Conhop Mervyn Perowne, reprinted from The Royal Engineers Journal, Sep 1938, and School of Anti-Aircraft Artillery and School of Anti-Aircraft Defence course notes and papers, [1939-1943]; military and War Office editions of Ordnance Survey maps of North Midlands, Lincolnshire and East Anglia, 1939, 1941, 1948-1949; 'The officer and fighting efficiency', pamphlet issued by War Office, 1941; notes relating to Company and Battery Commanders' Course No 5, Army School of Chemical Warfare, 1944; 5 Anti-Aircraft Group training directives and operational orders, 1949; orders, instructions and other papers relating to 58 Anti-Aircraft Bde, Royal Artillery (Territorial Army) Exercises DERWENT and CORGI, 1950.