Vladimir Zenzinov was born in Moscow in 1880, the son of a merchant. He studied at several universities in Germany and was known as one of the 'Heidelberg SRs'. His friendship with N.D. Avksentiev and A.R. Gots dates from that period. He joined the Socialist-Revolutionary Party in 1901 and returned to Russia in 1904. Arrested at the beginning of the Revolution of 1905 and sentenced to five years banishment in Siberia, he escaped to Western Europe, then returned to St. Petersburg in 1906. He worked for the PSR in various capacities and was elected to its Central Committee. He was active in Moscow, St. Petersburg and Kiev. In September 1906, he was arrested again and banished to Siberia. In 1907, he escaped, making his way to Western Europe via Japan, Shanghai, Hong Kong, Singapore, Colombo, and the Suez Canal. He soon returned illegally to Russia. Arrested again in 1910, Zenzinov was banished to northern Yakutia to make escape impossible. There he devoted himself to ethnographic studies and wrote several pioneering anthropological works on the subject, e.g.: Starinnye liudi u kholodnogo okeana and Ocherki torgovli na severe Yakutskoi oblasti. In his memoirs, he tells of some extremely isolated places he visited, such as the village of Russkoye Ustye in the Arctic. In 1915 Zenzinov returned to European Russia and lived in Moscow and St. Petersburg. He participated in the February Revolution of 1917, played various roles in the All-Russian Soviet of Workers', Soldiers' and Peasants' Deputies and supported the Provisional Government under A.F. Kerensky. With respect toWorld War I, which bitterly divided the PSR, Zenzinov adopted a 'Revolutionary Defencist' position: opposed to the war before the February Revolution, he supported the 'defence of the revolution' against Germany. Zenzinov tried to mediate between more radical 'Defencists' (like A.A. Argunov and the 'Internationalists' led by V.M. Chernov and M.A. Natanson. Zenzinov opposed the October Revolution. He was elected as an SR deputy to the one-day Constituent Assembly, dispersed by the Bolsheviks in 1918. Thereafter Zenzinov joined the rump Constituent Assembly government in Samara in 1918. He was briefly one of the Directors of the Provisional All-Russian Government, together with N.D. Avksentiev and others. Arrested during a military coup by Admiral Kolchak in November 1918, Zenzinov was exiled to China. From there he made his way back to Western Europe. He lived in Berlin until Hitler came to power in 1933, then moved to Paris. During this time he published several more books and worked for a variety of émigré socialist journals, including Volya Rossiya, Golos Rossii, Dni, Novaya Rossiya and Sovremennye zapiski. In 1939, Zenzinov went to Finland to witness the beginning of World War II and the Soviet attack on Finland, and to gather information on Russia. In 1940, Zenzinov emigrated to the United States, settling in New York and writing his memoirs.