Papers relating to his service with the Royal Electrical and Mechanical Engineers, 1943-1945, principally comprising official report by [Woods] on waterproofing technology, 1945; official reports on the waterproofing of 'A' and 'B' vehicles and equipment, 1943-1945, by Brig Hugh Roberts Howard, Deputy Director Mechanical Engineering (Wading), War Office, 1944-1945; 'Waterproofing of army equipment for amphibious operations', official report by Woods, [1943-1945]; photographs of wading tests on army vehicles, 1944; Combined Operations pamphlets on the responsibilities of the Royal Electrical and Mechanical Engineers, 1944, and the waterproofing of vehicles and equipment, 1944; 'The Army waded ashore', a typescript account of the role of the Royal Electrical and Mechanical Engineers in the preparations for D Day, 6 Jun 1944, written by Woods in [1944-1945].

Offprints of articles by Wilson, 1914-1931, on subjects relating to electrical engineering, from the Proceedings of the Royal Society , 1914-1924, Experimental wireless and the wireless engineer , 1929-1930, The wireless world , 1921, The proceedings of the Physical Society , 1922-1931, The electrician , 1913-1915, and the Journal of the Institution of Electrical Engineers , 1917-1931, including an article on 'The contribution of King's College to the advancement of engineering during the century, 1829-1929' printed as a supplement to The King's Engineer , Jun 1931. A list of 'Original papers issued from the Sir William Siemens Laboratory of Electrical Engineering, 1891-1928'. Photograph of a string galvanometer, 1924.

Papers relating to service in HMS GLOUCESTER, Royal Naval Volunteer Reserve, World War Two, including photocopy of diary, 1939-1940, naval messages, 1940-1943, and photographs; official service records, 1941-1958; and papers relating to naval career, 1949-1964, including article dated 1965, 'A Perspective View of Naval Engineering', on the Electrical Branch of the Royal Navy.

Notebooks, Oct 1920-Feb 1921, of Frederick Walter McCombie compiled as part of his engineering degree at King's College, University of London comprising one notebook containing notes on brickwork and stonework and one notebook containing notes on practical electrical technology.

Copies of article entitled 'Installation of an automatic electric lighting set in an army barracks', Fort Dunree, 1933, with covering letter from Lt Col P H Kealy, Secretary of the Institution of Royal Engineers, 1934; part of text on the training of officers of the Royal Engineers in peacetime, written in [1920-1935]. 'The 'Leader' project - engineer resources', an article on a project (subsequently abandoned) for the establishment of an Ordnance and Engineer depot at Mackinnon Road, near Mombasa, Kenya, in 1947-1949, written in Oct 1949 and reprinted from The Royal Engineers Journal.

Chelsea Polytechnic, Chelsea College of Science and Technology and Chelsea College Department of Electrical Engineering Records, 1968-1996. This series comprises correspondence with overseas research workers, 1990-1996; rough and fair copy teaching notes and handouts for students on courses taught by John Pearson and others on electronic devices, electromagnetism, circuits and control systems, microwave engineering and communications theory, 1972-1995; tape recordings of lectures on electronic devices, [1975]; Departmental research reports, 1989-1995; papers concerning a reunion of Chelsea Electronics graduates, 1985; incomplete set of examination question papers in Electronics and related disciplines, 1968-1993; group photographs of graduates, 1970-1980, 1985-1986, 1989, 1995; histories of the Electronics Department and other memorabilia, 1977-1978.

Papers relating to his service in the RN, 1960-1976, dated 1960, 1964-1965, 1973 and 1981, principally comprising 'Management improvement in the Royal Navy', a report of the Fleet Management Technique Panel headed by Nigel C Willmott, Head of Fleet Work Study, Oct 1960, with related correspondence, 1964-1965; The Naval Electrical Review vol 17 no 1, Jul 1963, including 'A report on defective material or design', an article by Brooks based on his work in the naval section of the Post-Design Division, Admiralty Surface Weapons Establishment, 1959-1962. Letter from A K Hall to Capt J W M Pertwee, Naval Assistant to the Naval Secretary, Ministry of Defence, regarding Hall's nomination to succeed Brooks as Capt, HMS DEFIANCE, dated 26 Aug 1975.

Typescript and manuscript texts of fifteen speeches by Ash, mostly after dinner and school and college prize days relating to aspects of RN Electrical Engineering, 1955-1963, notably including apprentices' passing out parade, HMS COLLINGWOOD, Fareham, Hampshire, 1955; Admiralty Electrical Engineering Officers' annual dinner, 1955 and 1957; Devonport Dockyard Technical College prize day, 1956; inaugural address as Chairman to the South Western Sub-Centre, Institute of Electrical Engineers entitled 'Electrical engineering in HM Dockyards', 1958, with typescript copy of memorandum 'Electric firing - torpedoes and torpedo gear', 27 Feb 1873; Trafalgar Night dinner, HMS COLLINGWOOD, Oct 1960; Victoria County Secondary School speech day, Barrow-in-Furness, Lancashire, 1962; Rodway Technical High School speech day, Bristol, 1962; RN and RN Reserve Electrical Officers' reunion dinner, HMS COLLINGWOOD, 1963.