Report by Acting Vice-Consul Campbell of a journey in North Corea in September and October 1889. Printed for the use of the Foreign Office. March 1891.
'The armed strength of Corea. 1891. London: Printed at the War Office, by Harrison and Sons, 1892.' By A. Cavendish, Captain, 1st Argyll and Sutherland Highlanders
'Military report on the Imperial Railways of north China.' 'Compiled in 1902 under the supervision of Major A.W.S.Wingate, Deputy Assistant Quartermaster-General for Intelligence, North China Command
Report on the Japanese army. Compiled for the Intelligence Division, War Office, by Captain N.W.H. Du Boulay, R.A. London: Printed at the War Office, by Harrison and Sons, 1896.
Routes and notes of a third journey in Persia. Compiled for the Intelligence Division of the War Office, by Second Lieutenant Percy M. Sykes, 2nd Dragoon Guards. Intelligence Division, War Office, September, 1894.