Cosmonauts A.G. Nikolaev, P.R. Popovich and V.F. Bykovsky

USSR. Moscow. 1964. Heroes of the Soviet Union, USSR pilot-cosmonauts Pavel Romanovich Popovich, Andriyan Grigorievich Nikolaev (left to right in the foreground) and Valery Fedorovich Bykovsky (left in the background) during classes at the N. Ye. Zhukovsky Air Force Engineering Academy. The exact date of the photo is unknown. Valentin Cheredintsev/TASS