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The vast majority of the material relates to Dent's research and clinical interests and falls into four main categories: correspondence files; files created around the publication of papers; lecture notes and symposium papers; and case/research notes. There are also smaller quantities dealing with other aspects of his career, such as the administration of UCH Metabolic Ward. The papers thus reflect most of Dent's scientific and clinical interests. This research is mainly represented by the abstracted documentation which he kept with drafts of his published papers (see section E.1) and also by correspondence about cases and clinical case notes (see section C.5). To a lesser degree they also illustrate the work at the laboratory bench which underpinned much of this research. For example, a file of unidentified paper chromatograms has been preserved (C.2/10) to illustrate one of Dent's methods of working, as described by his colleague, Heathcote, and quoted in the Biographical Memoirs of Fellows of the Royal Society, 1978: 'Paper chromatograms were not to be thrown away. They were filed and, since the colours faded, the outline of each spot was drawn in and the intensity of the colour was indicated by a number.' The way in which Dent compiled a large series of files around drafts of scientific papers also illustrates the importance of the published paper to him as a stage in the research process. An incomplete collection of reprints of Dent's published papers may be found in section E.2 of the collection.

Papers of Ivor Bowen, 1926-1973, relating to his career in aeronautics, comprising manuscript volume entitled 'Bomb and Bombsight figures'; photographs, some captioned, relating to a long haul flight to Singapore, 1946, including exterior and interior details of plane and an aerial view of Singapore; Air Ministry Laboratory report, 'Bomb ballistics experiments, Orfordness, 1926', written by L C Bygrave and Ivor Bowen, including aerial photographs, photographs of recording equipment, bomb at moment of release, cine film stills of explosion, detailed technical drawings of recording equipment and periscopic bomb sight, and graphs of time lags, trail angles and fall times of bombs; publications relating to aeronautics including Air Ministry manuals, chiefly on air navigation, 1926-1941; typescript draft handbook, 'Aircraft compass installations', by C S Hudson, for publication by HMSO, [1949]; patents issued to General Precision Laboratory, USA, 1956-1959; lecture text, 'The development of visual landing for flight simulators' by G M Hellings, Chief Scientist, General Precision Systems Ltd, Oct 1961; technical product descriptions including for Miniature Inertial Navigation System (MINS), produced by Kearfott Division, USA and Kearfott C702519001 floated rate-integrating gyro, Aug 1962; performance data for floated rate-integrating gyro King II, produced by Kearfott Division, USA, Dec 1962; offprint articles on aeronautics, 1962; memoranda and minutes of meetings of the Air League, 1963-1973; 'Unservile State Papers, no 15: A Defence for Britain' by Anthony Paice, Liberal Publication Dept, [1966]; letter from I J Bettison, General Equipments Ltd, Adelaide, Australia, 3 Jun 1963, on selling flight simulation training systems; and 'extracts from the technical supplement to the annual report of the Aeronautical Research Council', 1 Apr 1965.