Papers, 1881-1926; notably war diaries of the 3 Hussars during World War One, 1914-1919; private diary of Willcox, 1914; intelligence summaries with translated extracts from German documents, 1917-1918; typescript account of the 3 Hussars at Warneton, Belgium, Oct 1914; typescript account of the action of the 3 Hussars at Liez, France, March 1918 and near Hourges, France, Apr 1918; aerial photographs showing trench network, Beaucamp, France, 1916; copy of a diary by Willcox compiled during the siege of Ladysmith, South Africa, with two popular printed commemorative volumes describing the siege, 1899-1900; diary by Willcox of a visit by him as an observer of German army manoeuvres, Berlin area, with photographs, 1909; letters sent by Willcox to his parents and other relatives, 1881-1900; photographs of India, South Africa during the Boer War, in 1910 and the Western Front during World War One, showing groups of soldiers, equipment, the interiors and exteriors of buildings, including in Pretoria, of military exercises, parades, preparation for possible gas attack and of French chateaux, [1889-1919]; various papers compiled by Willcox during the compilation of his history of the 3 Hussars including operational summaries, biographical information and drawings and photographs, with reviews of Willcox's publications, 1908-1926; watercolours of the French landscape during World War One; manuscript hunting journal including detailed diaries and records of pig-sticking, tiger shooting and other hunts in Africa, Scotland and India, 1894-1932; colour illustrations of soldiers in various antique constumes.

Papers relating to his RAF career, 1942-[1953], principally comprising correspondence relating to the development of a submersible target at RAF St Eval, Cornwall, 1942, dated 1948; manuscript notes on the problems of establishing Coastal Command Station, Nassau, Bahamas, as a training centre for Coastal Liberator crews, 1942; official report on the RAF occupation of Schleswig-Holstein, Germany, 5-11 May 1945; printed reports on the progress of air disarmament in Germany in 1944-1946, produced by British Air Forces of Occupation, 1945-1947; correspondence relating to his work as Director of Air Branch, Control Commission, Berlin, 1947-1949, and to the planning of the Berlin Airlift, 1948-1949; official report on organisation and structure of Berlin Airlift administration; RAF training course notes and papers, 1950; papers relating to his service as Assistant Chief of Staff, Allied Air Forces Central Europe, [1951-1953], notably including photographs of Waite, [1951-1953]; published RAF manuals, 1948, 1950.

Papers relating to Marnham's life and career, 1916-1954, including twelve printed maps of Kashmir and Jammu, India, dated 1916-1933, with printed booklet entitled Notes for visitors to Kashmir (Pratap Government Press, India, 1933); printed programme for film Mons, 1924; twenty two captioned photographs relating to service in Peshawar and Nowshera, India, 1928-1935;typescript 'Report on operations in Greece', 4 Infantry Bde, 3 Mar-28 Apr 1941, with two printed maps of Greece [1941]; typescript official report 'The operations of the 50th (Northumbrian) Division in the Sicilian campaign, July and August 1943', with photograph of the memorial to 1 Durham Infantry Bde, Ponte Primosole, Sicily, 1943; typescript training notes by Maj Gen Charles Falkland Loewen,General Officer Commanding 1 Infantry Div, Mar 1945; printed booklet entitled Notes on the blockade of Berlin 1948. From a British viewpoint in Berlin (Headquarters, British Troops, Berlin, Germany, 1948); group photograph of the Warrant Officers and Sergeants, 62 Heavy Anti Aircraft Regt, Royal Artillery, Lincoln, Lincolnshire, Sep 1951; printed booklet containing list of members of 50 (Northumbrian) Div Officers Dining Club, Aug 1954.

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.