Vladimir Ilyich Ulyanov, better known as Vladimir Lenin, was a Russian revolutionary, leader of the Russian Social Democratic Labour Party (Bolsheviks), statesman and political theorist. After the October Revolution he served as the first and founding head of government of Soviet Russia from 1917 until his death in 1924 and of the Soviet Union from 1922 until his death in 1924.
This is in my opinion the best collection of lenin's work; its got two tactics, imperalism (as well as shorter works about the subject where he speaks more openly without fear of censorship from the Tsar), state and revolution, left communism. All what one would want from a collection, if that was not enough it featured some of lenin's speeches and writing post 1917 about the civil war and building socialism.