Copies of papers and photographs relating to Chamberlain's life and career, 1906-1970, including unpublished manuscript memoirs, 1906-1923; papers relating to pay and postings, 1915-1949; account of service with Royal Flying Corps, 1916-1917; typescript report on visit to Palestine, 1920; papers relating to service as Education Officer, London District, 1924-1928, including typescript official report by Chamberlain to Maj Gen Walter Patrick Hore- Ruthven, 2nd Baron Ruthven, General Officer Commanding London District on visit to the Army of the Irish Free State, 1926; papers relating to service as Education Officer, Headquarters Presidency and Assam District, India, 1934-1938, including letters from Maj Gen John Standish Surtees Prendergast Vereker, 6th Viscount Gort, 1934-1937, Maj Gen George Mackintosh Lindsay, 1938 and Brig Eric Edward Dorman Smith, 1938, and typescript account of tour of Tibet, 1937; uncaptioned photographs of tour of Tibet, 1937; article by Chamberlain from The Journal of the Army Educational Corps, on the Tibet tour, 1938, also two articles from The Journal of the Royal Army Educational Corps, on a visit by HM Queen Elizabeth II in Jul 1950 to the Army College, Wellbeck Abbey, Nottinghamshire (1951), and on the Command Education Officers' Conference, 1951, including printed photograph of all officers, including Chamberlain, still serving with the Royal Army Educational Corps who were commissioned into the Army Education Corps on its formation in 1920, with texts of speeches, 1953 and 1955; correspondence including letters from Gort thanking Chamberlain for sympathy on the death of his son, Lt Hon Charles Standish Prendergast Vereker, Grenadier Guards, and on the Governorship of Gibraltar, 1941, and letters from Gen Sir Richard Nelson Gale and Gen Sir James Stuart Steele, congratulating Chamberlain on the award of the CBE, 1956-1957; reports and memoranda relating to service as Chief Education Officer, British North Africa Force, 1943-1945 and Middle East Land Forces, 1947-1948; press cuttings, 1953-1958 and obituaries, 1970-1971.

Papers relating to his military service during World War Two, dated [1939-1945], 1948, 1965-1966, notably including account of the service of 1 Welch Regt in Crete, May 1941, written in 1966; silk map of North Africa and the southern Mediterranean, [1939-1945]; account of his imprisonment in Salonika in 1941 and his subsequent transportation to Germany, [1945]; typescript copy of 'Per anum ad astra', an account by Alexis Casdigli of the smuggling of maps from Oflag IX A-H to Oflag XII B in 1944 by a group of POWs, including Casdigli and Griffith, written in 1948, copied in 1965.

Copy of 'NCO', typescript memoir of his service as a non-commissioned officer in France, 1916 and 1918, Salonika, [1916-1917], and Palestine, [1917-1918] written in [1932] under the pseudonym Sgt John Francis, with sketches by Pte James Browning, 1916-1918.