Notes
- Andrew , Christopher . 1984 . Secret Service: The Making of the British Intelligence Community , 136 – 7 . London : Sphere Books .
- Beesley , Patrick . 1982 . Room 40, British Naval Intelligence, 1914–1918 , 3 London publisher .
- Fergusson , Thomas G. 1984 . British Military Intelligence, 1870–1914. The Development of a Modern Intelligence Service , 234 – 7 . London publisher .
- Ferris , John . 1987 . ‘Whitehall's Black Chamber: British Cryptology and the Government Code and Cypher School, 1919–1929’ . Intelligence and National Security , 2 ( 1 )
- Hiley , Nicholas . 1987 . ‘The Strategic Origins of Room 40’ . Intelligence and National Security , 2 ( 3 )
- Morris , Peter . 1987 . “ ‘Intelligence and its Applications: Mesopotamia, 1914–1916’ ” . In Intelligence and International Relations Edited by: Andrew , Christopher and Noakes , Jeremy . 80 – 81 . Exeter
- Parritt , B.A.H. 1971 . The Intelligencers: The History of British Military Intelligence Up to 1914 129
- Keyser , F.G. Colonel . 1893 . ‘The Different Systems of Signalling in the Field’ . Journal of the Royal United Service Institute , 37 : 259
- Kahn , David . 1967 . The Codebreakers, The Story of Secret Writing 188 New York
- 1899 . “ ‘Military Notes on the Dutch Republics of South Africa’ ” . War Office . WO 33/154
- Fergusson . Military Intelligence 160
- Parritt . Intelligencers 208
- Birdwood , William . 1941 . Khaki and Gown: An Autobiography 124
- Cockerill , George . 1944 . What Fools We Were , 19 London publisher .
- Fergusson . Military Intelligence 160
- Robertson , William . 1921 . From Private to Field‐Marshal 106
- 15.10. 1899 . “ ‘Ladysmith Intelligence Report’ ” . Vol. 15 , 15.10. ,
- Parritt . Intelligencers 208
- Fergusson . Military Intelligence 189 – 90 .
- Callwell , C.E. 1923 . Stray Recollections Vol.2 , 109 London
- Neilson , Keith . 1989 . ‘"A Dangerous Game of American Poker”: Britain and the Russo‐Japanese War’ . Journal of Strategic Studies , 12 ( 1 ) March
- Ferris , John . 1989 . ‘Penny Dreadful Literature: Britain, India and Strategic Intelligence on Russia and Central Asia, 1825–1947’ . a paper presented to the Fourth International Conference on Intelligence and Strategy at the United States Army War College . May 1989 .
- Kahn . Codebreakers 255
- Ferris , John . 1988 . ‘The British Army and Signals Intelligence in the Field During the First World War’ . Intelligence and National Security , 3 ( 3 ) Oct. : 43
- Kahn . Codebreakers 309 – 11 .
- French , David . 1982 . British Economic and Strategic Planning, 1905–1915 London
- Kahn . Codebreakers 189 – 214 .
- Wolseley General . 1886 . The Soldier's Pocket‐Book for Field Service , fifth edition 169 – 70 .
- Kennedy , C. Lieutenant‐Colonel . 1897 . ‘Army Signalling and its Use in War’ . Journal of the Royal United Services Institute , 41