Что касается оригиналов, то ряд книг, преимущественно старых, тоже представлен в иностранных электронных библиотеках, например, на сайтах http://www.archive.org/,
http://www.gwpda.org/ и других.
Книги:
Agricola [A.Bauermeister] (trans.H. Bywater), Spies Break Through (Constable, London, 1934).
Allard, P., Les Enigmes de la Guerre (Editions des Portiques, Paris, 1933).
Andrew, С.М., Secret Service: The Making of the British Intelligence Community (Heinemann, London, 1985).
– (intro) The Secret Service 1908-1945; (The National Archives, London, 1999).
– The Defence of the Realm: The Authorized Biography of MI5 (Allen Lane, London, 2009).
Antier, C., Walle, M. and Lahair, O., Les Femmes Espionnes dans la Grande Guerre (Librairie Le Echo, Rouen, 2008).
Asprey, R.B., The German High Command at War: Hindenburg and Ludendorff Conduct World War I (Morrow, NewYork, 1991).
Aston, G., Secret Service (Faber amp; Faber, London, 1930) (Дж. Астон, «Британская контрразведка в мировой войне», пер. с англ., М., 1939)
Baden-Powell, K., My Adventures as a Spy (Pearson, London, 1915).
Barton, G., The World's Greatest Military Spies (Page, Boston, 1917).
Baschwitz, K., Der Massenwahn, seine Wirkung und seine Beherrschung, (C.H. Becksche, Munich, 1923).
Вates, D., The Fashoda Incident of 1898 (Oxford University Press, Oxford, 1984).
Baumann, E., Der Fall Edith Cavell, (Otto Schlegel, Berlin, 1933).
Baxter, R., Guilty Women, (Quality Press, London, 1943).
Beesly, P., Room 40,British Naval Intelligence 1914-1918 (Oxford University Press, Oxford, 1984).
Beland, H., My Three Years in a German Prison (William Briggs, Toronto, 1919).
Bennett, R.M., Espionage: an A-Z of Spies and Secrets (Virgin, London, 2002).
Berndorff, H.R. (trans. Bernard Miall), Espionage (Nash amp; Grayson, London, 1930) (Ганс Рудольф Берндорф, Шпионаж. Перевод с немецкого. М. "Советский писатель" – "Олимп", 1991. http://www.lander.odessa.ua/lib.php)
Best, S. P., The Origins of the Intelligence Corps (unpublished manuscript, Imperial War Museum).
Bittner, T.D., Royal Marine Spies of World War One Era (Royal Marine Historical Society, 1993).
Bizard, L., Souvenirs d'un medecin de Saint-Lazare, (Michel Albin, Paris, 1925)
Boghardt, Т., Spies of the Kaiser (Palgrave Macmillan, Basingstoke, 2004).
Вoucard, Robert, The Secret Services of Europe (Stanley Paul, London, 1940) (Букар Р. За кулисами французской и германской разведок. М. Воениздат НКО СССР, 1943 http://militera.lib.ru/h/boucard_r2/index.html и Букар Р. В недрах секретных архивов. – М.: Воениздат НКО СССР, 1938. http://militera.lib.ru/h/boucard_r1/index.html)
Bouchardon, P., Souvenirs, (Albin Michel, Paris, 1954).
Bredin, J.-D., The Affair: The Case of Alfred Dreyfus (George Braziller, New York, 1986). Brown, F., Zola (Macmillan,London, 1996).
Вrust, H., I Guarded Kings (Stanley Paul, London, 1926).
Buchanan, G., My Mission to Russia and Other Diplomatic Memories (Cassell, London, 1923). Bulloch, J., MI5 (London, 1963).
Burge, M.R.K., History of the British Secret Service 1914-1917 (unpublished manuscript, Intelligence Corps Archives, Chicksands).
Bywater, H.C. and Ferraby, H.C., Strange Intelligence (Constable, London, 1931). (Байуотер Г., Морская разведка и шпионаж. Эпизоды из мировой войны, Военмориздат Наркомата ВМФ 1939; новый перевод: Гектор Чарльз Байуотер, Хьюберт Сесил Ферраби, Странная разведка: Воспоминания о Секретной службе британского Адмиралтейства. http://militera.lib.ru/h/bywater_ferraby/index.html)
Campbell, S., Secrets of Crewe House (Hodder amp; Stoughton, London, 1920) (Стюарт К. Тайны дома Крю. Английская пропаганда в мировую войну 1914-1918 гг. – М-Л.: Госиздат. Отдел военной литературы, 1928. http://militera.lib.ru/h/stuart_c/index.html)
Clark, R.W., Great Moments of Espionage (Phoenix House, London, 1963).
Cook A., Ace of Spies (Tempus, Stroud, 2002) (Эндрю Кук, Сидней Рейли. ST1. В паутине секретных служб, Киев, 2003)
– 'M'., Britain's First Spymaster (Tempus, Stroud, 2004).
Cordell, R., Somerset Maugham: A Biographical and Critical Study (Heinemann, London, 1961).
Curtis, A., The Pattern of Maugham (Hamish Hamilton, London, 1974).
Darrow, M., French Women and the First World War: War Stories from the Home Front, (Berg, Oxford, 2000).
Deaacon, R., Spyclopaedia (Futura, London, 1987).
Dobson, С., The Dictionary of Espionage (Harrap, London, 1984).
Drake, R.J., History of Intelligence (B) British Expeditionary Force, France from January 1917 to April 1919 (unpublished manuscript, Intelligence Corps Archives).
Dukes, P., Red Dusk and the Morrow (Williams and Norgate, London, 1922).
Dunn, J., Paperchase (Selwyn Blount, London, 1938).
Durand, P., Agents Secrets, l'Affaire Fauquenot (Birckel, Payot, Paris, 1937).
E 7, I am a Spy; The Danger Zone (Lovat Dickson, London, 1938).
– Women Spies I have known (Hurst and Blackett, London, n.d.).
– Spies I knew (Jarrolds, London, 1933).
Edmonds, Sir James, 'How Different Then: Reminiscences and Comments of a Nonagenarian 1861-1951', unpublished manuscript in Liddell Hart Collection, Kings College, London.
Everitt, N., British Secret Service during the Great War (Hutchinson, London, 1920).
Ex-Intelligence Officer [Lionel James], The German Spy System from Within (Hodder amp; Stoughton, London, 1914).
Faligot, R. and Kauffer, R., Histoire Mondiale de Renseignement, Tome I 1870-1939 (Laffont, Paris, 1993). (Фалиго Р., Коффер Р. Всемирная история разведывательных служб. М. ТЕРРА. 1997)
Felstead, S.T., German Spies at Bay: Being an Actual Record of the German Espionage in Great Britain during the years 1914-1918 compiled from official sources (Hutchinson, London, 1920).
Ferguson, N., The Pity of War (Allen Lane, London, 1998).
Fischer, E (trans.M. Jackson), War of Illusions: German Polices from 1911 to 1914 (Chatto amp; Windus, London, 1975).
Fitch, H.T., Traitors Within: The Adventures of Detective Inspector Herbert T. Fitch (Hurst and Blackett, London, 1933)
Franklin, С., The Great Spies (Hart Publishing, New York, 1967).
Frazer, J., Sixty Years in Uniform (Stanley Paul, London, 1939).
Friedman, W. and Mendelsohn, C.J., The Zimmermann Telegram of January 16 1917, (Aegean Park Press, Laguna Hills, Ca.).
Garfield, В., The Meinertzhagen Mystery (Potomac Press,Washington DC, 2007).
Givierge E, M., Au Service du Chiffre 18 ans de souvenirs 1907-1925, vol. III (NAF, Amiens, 1930).
Gooch, J., The Prospect of War: studies in British defence policy 1847-1942 (Taylor amp; Francis, London, 1981).
Grant, H., Spies and Secret Service: The Story of Espionage, its Main Systems and Chief Exponents (Frederick A. Stokes, New York, 1915).