Typescript draft of 'The memoirs of a professional soldier in peace and war', an unpublished account of Clarke's career in the army, including service in Gallipoli and Palestine during World War One, 1968; various papers and pamphlets collated by Clarke, mainly relating to the training and performance of the Royal West African Frontier Force, 1923-[1960]; articles written by Clarke and published in British and African journals and periodicals, 1926-1959; printer's transparencies of maps used by Clarke in Part Two of the History of the Royal West African Frontier Force (Gale and Polden, Aldershot, 1964).

The papers cover the period 1914-1965 and include papers relating to service in England, France and with British Army of the Rhine, 1914-1919 in particular 35 Division Artillery Signals; Iraq, including diary, 1920-1921; Nigeria, including field message book, 1924; Quetta, India, including earthquake diary, 1935; newspapers covering death of King George V, 1936; command of Northern Rhodesia Regt, Lusaka, 1937-1940, including scrap albums; command of 26 (East African) Infantry Brigade, East Africa and Abyssinia, 1940- 1941, including operation reports; command of 22 (East African) Infantry Brigade, Madagascar, 1942, including operation reports; command of 28 (East African) Infantry Brigade and 11 (East African) division, Burma and India, 1944-1946 including accounts of operations; General Officer Commanding East Africa, 1946- 1948, including official circulars, speeches and addresses; General Officer Commanding Aldershot Command, 1948-1951, including speeches and lectures; Representative on Military Staff Committtee, United Nations, 1951-1953, including diary; Col Commandant of Northern Rhodesia Regiment, King's African Rifles and Kenya Regiment, including correspondence, 1952-1964, committee papers and publications; papers relating to Army Cadet Force Association including minutes of meetings, 1956-1959; Inter-Parliamentary Union, including account of journey to Warsaw, Poland, 1959; maps, 1914-1943, including Western Front, Iraq and India, Nigeria and Madagascar.

The records of Queen Elizabeth College Library include minutes, correspondence and publications, 1905-1986; notably an incomplete series of Library Committee minute books, 1905-1977 (Ref: QAL/M); loose minutes, correspondence and other papers concerned with the management and operation of the Library, in particular working party notes, policy documents, Library Committee papers, donations, accessions lists, finance, redevelopment, computing, and relating to the teaching of physics and social studies, 1962-1986 (Ref: 1992/QAL/F, QAL/F1); correspondence and architectural plans relating to the planning and development of a proposed new library, statistics and inspections, 1971-1979 (Ref: 1999/QAL); publications including copies of articles from a wide range of physiological and medical journals, mainly concerning obesity, hormonal and metabolic balance with the results of studies carried out on humans and rodents, 1912-1975 (Ref: QAL/PUB1); papers relating to catering, domestic planning and appliances, including on electric cookers and refrigerators, [1963-1970] (Ref: QAL/PUB2); Harrow Consumer Group publications including its magazine, Query, 1967-1971 (Ref: QAL/PUB3); publications concerned with recipes and diet and kitchen hygiene [1915-1960] (Ref: QAL/PUB4); pamphlets, brochures and other publications issued by the Government of Malawi and organisations in Rhodesia and Nigeria, on nutrition, health education, agricultural development and farming practices, 1969-1973 (QAL/PUB5).