Who dated Olga Spessivtseva?

Olga Alexandrovna Spessivtseva (Russian: Ольга Алекса́ндровна Спеси́вцева; 18 July [O.S. 6 July] 1895 – 16 September 1991) was a Russian ballerina whose stage career spanned from 1913 to 1939.

She was considered as one of the finest Russian prima ballerinas by dance writers.

Akim Lvovich Volynsky (Аким Львович Волынский, real name Khaim Leybovich Flekser, Хаим Лейбович Флексер; 3 May 1861 – 6 July 1926) was a Russian literary (later theatre and ballet) critic and historian, one of the early ideologists of the Russian Modernism.