'Notes on a tour in the United States in September and October, 1888. By Major G.S. Clarke, C.M.G., R.E. London: Printed at the War Office, by Harrison and Sons, 1888.'
'Reports by the Military Attachés with the Spanish and United States forces in Cuba and Porto Rico [Major G.F. Leverson, R.E. and Captain A.H. Lee, R.A.]. London: Printed at the War Office, by Harrison and Sons, 1899.'