Papers and photographs relating to Alderson's RNVR and RN service, [1932]-1939, including photograph of Alderson as a Surgeon Sub Lt, Royal Naval Volunteer Reserve [1932]; loose pages from a photograph album with 87 captioned photographs relating to Alderson's service on HMS GLORIOUS, Mediterranean Fleet, 1935-1936, notably photographs of HMS COURAGEOUS, HMS HERMES, HMS REVENGE, HMS NELSON, individual RN and RAF officers, and flying operations from HMS GLORIOUS, 1935-1936; typescript memorandum entitled 'Medical organisation for war', HMS GLORIOUS [1937]. Papers relating to the loss of HM Submarine THETIS, Liverpool Bay, 1 Jun 1939, including typescript statement by Alderson, Assistant Medical Officer, HMS DOLPHIN, on his medical examinations of Capt Harry Percy Kendall Oram, RN, and Lt Frederick Greville Woods, RN, two of the four survivors to escape from HM Submarine THETIS, Jun 1939; correspondence between Alderson and other RN Medical Officers relating to the recovery of the survivors of HM Submarine THETIS, Jun 1939; typescript memorandum entitled 'DSEA (Davis Submarine Escape Apparatus)-effect of breathing oxygen under pressure' [1939]; typescript memorandum by Alderson entitled 'Summary of information as to the medical aspects of the sinking of HMS THETIS and the escape of four survivors by DSEA (Davis Submarine Escape Apparatus)', 3 Jun 1939. Papers and photographs relating to Alderson's service as Medical Officer, HMS KELLY, 5 Destroyer Flotilla, Home Fleet, 1939-1940, and to HMS KELLY reunions and commemorations, 1958-1959, including typescript copy of news-sheet 'K D F News' (K Destroyer Flotilla News), relating to the return to the UK from France of HRH Prince Edward Albert Christian George Andrew Patrick David, Duke of Windsor and Wallis, Duchess of Windsor, on board HMS KELLY, 13 Sep 1939, with photograph of the Duke and Duchess on board HMS KELLY with Capt Lord Louis (Francis Albert Victor Nicholas) Mountbatten, 1939; two photographs of Mountbatten, three photographs of HMS KELLY, and one HMS KELLY Christmas card, 1939; typescript routine orders, Medical Section, 5 Destroyer Flotilla, Home Fleet, Nov 1939; correspondence between Alderson and Mountbatten, 1939-1940, relating to Alderson's appointment as Medical Officer, 5 Destroyer Flotilla, and to Mountbatten's recovery from jaundice, Jan-Feb 1940; correspondence, memoranda and notes relating to patients from HM Destroyers KIMBERLEY, KELLY and KELVIN, treated by the Medical Section, 5 Destroyer Flotilla, 1939-1940; lists of medical stores and routine medical supply orders, 5 Destroyer Flotilla, 1939-1940; printed and manuscript medical reports detailing the overall health of the ship's companies of HM Destroyers KELLY, KELVIN, KHARTOUM, KIMBERLEY, KINGSTON and KIPLING, 1939-1940; typescript list of dead and wounded, following German torpedo strike, HMS KELLY, 9 May 1940, with detailed manuscript casualty reports for individual ratings, and photograph of the damage to HMS KELLY, May 1940; eight photographs of Alderson and AF Rt Hon Louis (Francis Albert Victor Nicholas) Mountbatten, 1st Earl Mountbatten of Burma, at ceremony at the grave of an HMS KELLY crew member, Hebburn, County Durham, Nov 1958, and at an HMS KELLY reunion, 1959. Photograph album entitled 'Singapore Commission, Jan 3rd 1950-June 30th 1952', containing 150 photographs, 1949-1952, relating to the voyage to Singapore and Alderson's subsequent service at the Royal Naval Sick Quarters, HMS TERROR, Singapore, 1950-1952.

Special service', typescript memoir covering his life and naval career, 1913-1945, notably his service in Norway, 1940 and 1942, his involvement in Motor Torpedo Boat operations in Norway, 1942-1943, his service with 12 (Special Service) Submarine Flotilla, 1943-1944, and his reconnaissance work with 30 Assault Unit in France, Belgium and Germany, 1944-1945, written in [1960-1970],with photographs, [1943-1946].