Lev Kamenev arrested in 1902, ending his formal education. From that point on, he worked as a professional revolutionary, and was active in the capital St. Petersburg, Moscow and Tiflis. He adopted the surname Kamenev during this period. In the early 1900s, he married Olga Bronstein, a fellow Marxist (and younger sister of Leon Trotsky, who had also adopted a different surname). The couple had two sons together. Kamenev joined the Communists in 1901. He took a brief trip abroad in 1902, meeting Russian social democratic leaders living in exile, including Vladimir Lenin, whose adherent and close associate he became. He also
Lev Lyubimov of the book of recollections «Na chuzhbine» (1963), in which he describes the figures of Russian emigration, e.g. Kuprin, Bunin, Rakhmaninov, Alechin. Lev Dmitriyevich Lyubimov died in 1976. Lev Lyubimov Lev Dmitriyevich Lybimov (Russian: Лев Дмитриевич Любимов; 31 July 1902, Tula, Russia – 1976) was a Russian journalist, writer and art historian; author of the book of recollections entitled “Na chuzbine” («На чужбине», 'In a Strange/Foreign Land'). Lyubimov was a White emigre but returned to Russia after World War II. Lev Dmitriyevich Lyubimov was a son of Dmitry Lyubimov, an assistant of the secretary of state of the State Council.