The Day We Almost Bombed Moscow. The Allied War in Russia 1918-1920 by Christopher Dobson
At War with the Bolsheviks: Allied Intervention into Russia, 1917-20 by Robert Jackson

Covert Operations in Russia
The Iron Maze: Western Intelligence vs the Bolsheviks by Gordon Brook-Shepherd
The Spy Who Disappeared: Diary of a Secret Mission to Russian Central Asia in 1918 by Reginald Teague-Jones

South Russia
Air Command – A fighter pilot’s story by Raymond Collishaw & R.V. Dodds
An Air Fighter’s Scrap Book by Ira Jones
Over the Balkans and South Russia, 1917-19 by H.A. Jones
Gone to Russia to Fight: The RAF in South Russia 1918-1920 by John T. Smith