To R. I. Kozintseva’s biography
The article discusses the unknown details of the biography of a specialist in the history of Russia of the 18<sup>th </sup>century, a scientific worker of the Leningrad Branch of the Institute of History of the Academy of Sciences Ruth Iosifovna Kozintseva (1906-1985). Arrested in 1937, R. Kozintseva spent almost 20 years in prison and exile and returned in Leningrad in 1956. The article is based on R. Kozintseva’s letters from a Siberian exile to her teacher, the famous Russian historian A. I. Andreev.