Typescript draft of 'The memoirs of a professional soldier in peace and war', an unpublished account of Clarke's career in the army, including service in Gallipoli and Palestine during World War One, 1968; various papers and pamphlets collated by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).

Forty five photographs, mostly captioned, relating to Hicks' military career, 1933-1949, notably including the North West Frontier, India, 1933-1934, officers at Staff College, Haifa, Palestine, 1940, the Allied Victory Parade, Berlin, Germany, 1946, and service in Abeokuta, Nigeria, 1948-1949.