Photo. The Fifteenth Congress of the CPSU / b /. Nadezhda Konstantinovna Krupskaya, Maria Ilyinichna Ulyanova and A. Artyukhina among the workers of the Trekhgornaya Manufactory (Moscow) and factory
“International” (Vladimir Province).
USSR, Moscow. December of 1927.
All-Union Trust of Photography and Photo Industry “Soyusphoto”.
Silver-gelatin imprint, stamp