Copies of diaries, 1911-1916, covering his flying training, 1911-1914, his service with the Royal Naval Air Service in the UK, [1914]-1915, Gallipoli, 1915, Bulgaria, 1915, and Egypt, 1916. Copy of account of his imprisonment in Turkey, Mar-Jul 1917, written in [1917], with newspaper cutting describing conditions in prisons in Constantinople, [1917]. 'The story of the men and aircraft of the Fleet Air Arm', illustrated pamphlet prepared for the Directorate of Navy Recruiting by the Central Office of Information, dated 1985.

Midshipman's journal, Sep 1917- Jan 1921, covering his service in the North Sea, 1917-1919, Baltic, 1919, and Mediterranean, Turkey and Black Sea, 1920, notably his experiences during the Allied occupation of Constantinople, 1920.

Papers, 1899-1937, and 1964-1966, including personal letters to Alice Townshend, Lady Townshend, and to Comtesse Cahen d'Anvers from FM Horatio Herbert Kitchener, 1st Earl Kitchener of Khartoum and Broome, 1906-1911, also single personal letters from Frederick Edward Grey Ponsonby, Assistant Private Secretary to Queen Victoria, 1899, FM Garnet Joseph Wolseley, 1st Viscount Wolseley, 1901, Brig Gen Sir William Riddell Birdwood, Bt, 1906, Christian Rudolf de Wet, Minister of Agriculture, Orange River Colony, South Africa, 1909, FM Frederick Sleigh Roberts, 1st Earl Roberts of Kandahar, Pretoria and Waterford, 1911-1912, Rt Hon George Nathanial Curzon, Lord Privy Seal, 1915, Rt Hon Herbert Henry Asquith, Prime Minister, 1916, Paul Cambon, French Ambassador to Court of St James's, 1916, Lt Gen Sir Philip Walhouse Chetwode, 7th Bt, Military Secretary, War Office, 1919, and others; letter from Alice Townshend, Lady Townshend, dated 1916, to Mrs Morland, mother of Capt Walter Edward Thomson Morland, Aide de Camp to Townshend and captured with him at Kut el Amara, Mesopotamia, with information on the safety of her son, with three photographs of Townshend and the POW accomodation in Constantinople, 1916; scrapbook of newspaper cuttings, 1916, on the Mesopotamian campaign and the defence and siege of Kut el Amara, with signed printed portrait of Mustafa Kemal Atatürk, 1937; file of research correspondence by Lt Col Arthur James Barker for The neglected war (Faber, London, 1967) and Townshend of Kut (Cassell, London, 1967), 1964-1966, including correspondence with Capt Sir (Thomas) Noël Arkell, FM Sir Claude John Eyre Auchinleck, Maj Gen George Osborne de Renzy Channer, Sir Reader (William) Bullard, Brig Kenneth Bredin Shakespear Crawford, Sir Ernest (William) Goodale, Capt Basil Henry Liddell Hart, Maj Gen Henry Hampden Rich, Col Clive Woodes Rogers, Col Eric Lechmere Stephenson, Countess Audrey de Borchgrave-Townshend, Brig Louis James Woodhouse.

Two manuscript narrative diaries by Webb-Bowen, detailing the voyage of HMS IRON DUKE to the Crimea, Russia, via Gibraltar, Malta, Suda Bay, Crete, and Constantinople, Turkey, and subsequent operations in the Black Sea and Turkey, 21 Mar 1919-30 Nov 1920; typescript orders by Adm Sir John Michael de Robeck, 1st Bt, Commander-in-Chief, Mediterranean Fleet, for officers and men of HM Ships IRON DUKE, MARLBOROUGH, BENBOW, MONTROSE, SPEEDY and SPORTIVE, relating to landing operations against Nationalist Turkish forces, Gemlik and Yeni Keui, Turkey, Jul 1920.