Statement of the Kaganovich Family
- Family response to 'Wolf of the Kremlin: First Biography of L.M. Kaganovich, the Soviet Union's Architect of Fear," a biography of one of Stalin's senior apparatchiks.
- http://revolutionarydemocracy.org/rdv1n2/kaganfam.htm

1923: Revolutionary Silhouettes
- Anatoly Vasilievich Lunacharsky's biographical essays on various leaders including Lenin, Trotsky, Kalinin, Zinoviev as well as Plekhanov and Martov among others.
- http://www.marxists.org/archive/lunachar/index.htm