The Bolshevik Revolution, 1917-1923 by Edward Hallett Carr
In Volume I, E. H. Carr begins with an analysis of the events in Russian history from 1898 to 1917 that shaped the course of the Revolution. He examines the constitutional structure erected by the new government and then turns to the multifarious problems facing the Bolsheviks as they took possession of a rapidly disintegrating Russian empire.