"Secret Legend. Mongolian Chronicle of 1240" - the most valuable monument of ancient Mongolian literature, discovered in the XIX century. one of the largest orientalists, Sinologist Palladium Kafarov. In 1941, the book was published by the USSR Academy of Sciences and Moscow-Leningrad translated into Russian by Acad. S. A. Kozin edited by Acad. A.P. Barannikov.