Bolshevik Revolutionary leaders, Left to right (row by row): I.V. Babushkin, Nikolay Bauman, Rozalia Samuilovna Zemlyachka, Mikhail Kalinin, V.Lado-Ketshoveli, Nadezhda Krupskaya, M.M. Litvinov, Grigory Ivanovich Petrovsky, O.A. Pyatnitskii, Yakov Sverdlov, Nikolai Skripnik, Aaron Aleksandrovich Soltz, Elena Stasova and Stepan Shahumyan. Supplied By: Society for Co-operation in Russian & Soviet Studies