XXIV Congress of the CPSU in Moscow

USSR. Moscow. April 1971. First Secretary of the Sakhalin Regional Committee of the CPSU Pavel Artemovich Leonov and three times Hero of Socialist Labor, President of the USSR Academy of Sciences Mstislav Vsevolodovich Keldysh (left to right in the foreground) during a conversation during a break between sessions of the 24th Congress of the Communist Party of the Soviet Union in the Kremlin Palace of Congresses. The exact date of the photo is unknown. Valentin Mastyukov/TASS