Papers, 1881-1926; notably war diaries of the 3 Hussars during World War One, 1914-1919; private diary of Willcox, 1914; intelligence summaries with translated extracts from German documents, 1917-1918; typescript account of the 3 Hussars at Warneton, Belgium, Oct 1914; typescript account of the action of the 3 Hussars at Liez, France, March 1918 and near Hourges, France, Apr 1918; aerial photographs showing trench network, Beaucamp, France, 1916; copy of a diary by Willcox compiled during the siege of Ladysmith, South Africa, with two popular printed commemorative volumes describing the siege, 1899-1900; diary by Willcox of a visit by him as an observer of German army manoeuvres, Berlin area, with photographs, 1909; letters sent by Willcox to his parents and other relatives, 1881-1900; photographs of India, South Africa during the Boer War, in 1910 and the Western Front during World War One, showing groups of soldiers, equipment, the interiors and exteriors of buildings, including in Pretoria, of military exercises, parades, preparation for possible gas attack and of French chateaux, [1889-1919]; various papers compiled by Willcox during the compilation of his history of the 3 Hussars including operational summaries, biographical information and drawings and photographs, with reviews of Willcox's publications, 1908-1926; watercolours of the French landscape during World War One; manuscript hunting journal including detailed diaries and records of pig-sticking, tiger shooting and other hunts in Africa, Scotland and India, 1894-1932; colour illustrations of soldiers in various antique constumes.

Manuscript letter written in Afrikaans by Boer soldier A J Tapper to the Boethma family, Groenfontein, 7 Nov 1899, detailing Boer attitudes and expectations during the Siege of Ladysmith, Second Boer War, South Africa, with English translation of letter supervised by Brig William Francis Kynaston Thompson, 1966, and correspondence between Thompson and former holder of the letter Mrs L K Dodderidge, widow of Sgt Dodderidge, 1966

Bound typescript entitled 'Fifty odd years of memoirs', covering his life and career, 1893-1945, notably his work as an engineer in South Africa, 1894-1899, 1901-1904, 1909-1911, his travels in South Africa, 1895, East Africa, 1904, and Canada, 1907, his service as a volunteer stretcher bearer with the Royal Army Medical Corps, South Africa, 1899-1900, including the siege of Ladysmith, 1899-1900, his service with the South African Engineer Corps, German South West Africa, 1914-1915, and with the South African Signal Company, Royal Engineers, France, 1916, including the Battle of the Somme, Jul 1916, and his experiences in the Channel Islands during German occupation, 1940-1945, dated [1945-1967].

Press cuttings relating to First Boer War, 1881, and the Second Boer War, 1899-1902, notably concerning the death of Gen Sir George Pomeroy Colley at the Battle of Majuba Hill, 1881; the Transvaal Crisis, 1896; the Siege of Ladysmith, Natal, 1899; British rule in South Africa, 1899; the controversy over the publication of official despatches from the campaign at Spion Kop, Natal, 1900. Press cuttings relating to the Balkans, 1908-1913, concern most notably the rise of the 'Young Turks' movement in Turkey and the restoration of the Turkish Constitution, 1908; the first anniversary of the annexation of Bosnia-Herzegovina by Austria-Hungary, 1909; the general mobilisation of Bulgarian troops along the Turkish frontier, in the prelude to the First Balkan War, 1912; the mobilisation of Turkish, Serbian, and Greek troops, 1912; the comparative strengths of the Turkish and Greek navies in the prelude to the First Balkan War, 1912; the demands of the Balkan states of Bulgaria, Montenegro, Serbia, and Greece to Austria-Hungary and Russia, 1912; the formal declaration of war issued by the Balkan States of Bulgaria, Montenegro, Serbia, and Greece to Turkey, 1912; the first battles of the First Balkan War at Lule Burgas, Bulgaria, 1912; the fall of Adrianople, Turkey, 1913; the establishment of the new border between Bulgaria and Turkey, following the defeat of Turkish forces during the First Balkan War, 1913. Press cuttings relating to Irish Home rule concern the issue of the Government of Ireland Bill, Apr 1912; the establishment of a Provisional Government for Ulster, Sep 1913; the Government of Ireland Bill, 1920; the Conference on Ireland and the formation of the Irish Free State, Oct-Dec 1921. Press cuttings relating to the British Army in Ulster primarily concern the resignation of Lt Col Rt Hon John Edward Bernard Seely MP, Parliamentary Under Secretary, and subsequently Secretary of State for War, and the Curragh Incident, Dublin, 1914