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.

Typescript draft of 'The memoirs of a professional soldier in peace and war', an unpublished account of Clarke's career in the army, including service in Gallipoli and Palestine during World War One, 1968; various papers and pamphlets collated by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