Papers relating to his life and career, 1881-1936, including letters to his family, 1890-1922, notably covering his service in UK, 1890-1896, and South Africa, 1899-1902, including operations around Colesberg, Dec 1899-Jan 1900, relief of Kimberley, Feb 1900, Battle of Diamond Hill, Jun 1900, and operations in Transvaal and Orange Free State, 1900-1902, on Western Front, 1914-1917, including the first battle of Ypres, Oct-Nov 1914, Battle of Arras, Apr 1917, and in Palestine and Egypt, 1917-1922, including third Battle of Gaza, Oct-Nov 1917, capture of Jerusalem, Dec 1917, Battle of Megiddo, Sep 1918, and fall of Damascus, Oct 1918; correspondence relating to Allenby's role as High Commissioner for Egypt and the Sudan, 1919-1925, including telegrams exchanged by Allenby and the Rt Hon (Joseph) Austen Chamberlain, Secretary of State for Foreign Affairs, over Nevile Meyrick Henderson's appointment as Minister Plenipotentiary and Allenby's resignation as High Commissioner for Egypt and the Sudan, 1924-1925; manuscript, typescript and printed texts of speeches, lectures and articles, [1929-1936]; newspaper cuttings, 1899-1936, including obituaries of Allenby, 1936; photographs, 1881-1936. Papers collected by Gen Archibald Percival Wavell during the writing of Allenby: a study in greatness (Harrap and Co, London, 1940) and Allenby in Egypt (Harrap and Co, London, 1943) principally comprising correspondence and notes written by Allenby's army colleagues, 1936-1943; notes and letters from Gerald Delany concerning Allenby in Egypt, [1940-1943]; letter from Gen Sir Henry George Chauvel to Director of Australian War Memorial concerning Seven pillars of wisdom by Thomas Edward Lawrence (also known as Thomas Edward Shaw) (Jonathan Cape, London, 1935), 1936, and printed appreciation of Lawrence by Allenby, 1935.

Copies of 95 photographs and negatives relating to the Second Boer War, South Africa, 1899-1902, including two photograph albums, 'Snap shots by Capt E A Williams Esq' and 'Snap shots in Natal and Transvaal taken by Capt E A Williams, KDG', and photographs of the Boer President of the Transvaal Stephanus Johannes Paulus (Paul) Kruger and of Col Edward Cecil Bethune. Microfilm copies of two bound order books 'Regimental Orders, 1899-1900' and 'Brigade Orders', and microfilm copies of three scrapbooks of cuttings relating to Bethune's Mounted Infantry in South Africa, 1899-1900, including detailed accounts of specific actions.