Papers relating to Lewis's career, [1917]-1949, notably, reports for the Department of the Chief of the Imperial General Staff, 1938-1939, papers relating to his service with Allied Force Headquarters, 1942-1944 and to his senior administrative role with the United Nations Relief and Rehabilitation Administration, 1945-1948

Typescript job description for Deputy Chief of Operations, Western European Union Police Contingent [1995]; one manuscript and nine typescript letters by Sawers to his family relating to his service with Western European Union Police Contingent, Mostar, Bosnia, Feb-Aug 1996; two letters praising Sawers' work as Deputy Chief of Operations, Western European Union Police Contingent, Mostar, from Lt Gen Sir (John) Martin (Carruthers) Garrod, Western European Union Special Envoy in Mostar, and Superintendent S P Jordan, Police Commissioner, Mostar, Aug 1996. Typescript notes entitled 'European Union Administration of Mostar, Bosnia. Briefing for officers serving with the WEU Police', 13 Oct 1994; typescript briefing notes on the history of the Western European Union (WEU), on the WEU element of the Unified Police Force of Mostar (UPFM), Bosnia [1995], and on the recent history of Bosnia-Hercegovina [1995]; typescript 'De-brief notes from the first contingent of UK officers seconded to Mostar' [1995]; typescript report entitled 'Policing in Mostar' by Deputy Chief Constable Clive J R Roche, West Midlands Police Force, 27 Sep 1995; typescript report on the policing operation in Mostar by Rt Hon David (John) Maclean, Minister of State, Home Office, 3 Jan 1996; copy of article entitled 'Peace in Bosnia. The Balkan end-game' from The Economist, 20 Jan 1996.

Papers relating to his work at SHAPE, 1953-1955, dated 1953-1955 and 1957, comprising 'Some brief thoughts on problem of co-ordination of progress in study of the tactical use of the atom bomb', draft text by White, Sep 1953; draft of directive from Supreme Allied Commander Europe to Commanders-in-Chief concerning the future form of land battle in Europe, 1954; typescript notes on 'The philosophy of the future land/air battle' written by White for FM Sir Bernard Law Montgomery, 1st Viscount Montgomery of Alamein and of Hindhead, Deputy Supreme Allied Commander Europe, Jun 1955; unsigned typescript 'Notes for discussion between Marshal Juin and Field Marshal Montgomery' on 24 Aug 1955, relating to the organisation of NATO land forces; 'Memorandum on the economics of Western defence' by Montgomery, dated 1955; 'Organisation for war in modern times', text of lecture to Royal United Service Institution by Montgomery, 12 Oct 1955; texts of Montgomery's final addresses to staff of SHAPE exercises CPX 5 and CPX 7, mainly concerning international organisation for future war, 1955 and 1957.