Vladimir Ilyich Ulyanov (22 April [O.S. 10 April] 1870 – 21 January 1924) was a Russian communist revolutionary, politician, and political theorist. He served as head of government of the Russian Soviet Federative Socialist Republic from 1917, and of the Soviet Union from 1922 until his death. Based in Marxism, his political theories are known as Leninism. This is a Vladimir Lenin bibliography, including writings, speeches, letters and other works.