At Smolny, Petrograd [17th July 1920]
Boris Souvarine Papers - Soviet Russia Photos
Notes: The back of the picture holds the mention (in Russian) "At Smolny". The picture was very likely at the IInd Congress of the IIIrd International: one recognizes the decorations of the entrance of Smolny.
At the centre of the photo, the man with a cap may be Lenin, surrounded by delegates to the Congress.
Description: 1 photograph. Black and white ; 11 x 15.5 cm.
Sources and further reading:
Rosmer, Alfred. 1920. Moscou sous Lénine. Extract available online, "XIII: Smolny - Séance solennelle d'ouverture du IIe Congrès":