| AMB | Archives of the Ministry of Security |
| AMBRF | Archives of the Ministry of Security of the Russian Federation |
| APRF | Archives of the President of the Russian Federation |
| ECCI | Executive Committee of the Communist International |
| GARF | State Archives of the Russian Federation |
| GPU | State Political Administration |
| KGB | Committee of State Security |
| NKGB | People’s Commissariat of State Security |
| NKVD | People’s Commissariat of the Interior |
| OGPU | Combined State Political Administration |
| PSS | V.I. Lenin, Polnoe sobranie sochinenii (Complete Works), 5th edition, 55 vols., Moscow, 1970–85 |
| RTsKhIDNI | Russian Centre for the Preservation and Study of Recent Historical Documentation |
| TsAKGB | Central KGB Archives |
| TsAMBRF | Central Interior Ministry Archives of the Russian Federation |
| TsAMO | Central Archives of the Ministry of Defence |
| TsGALI | Central State Archives of Literature and Art |
| TsGASA | Central State Archives of the Soviet Army |
| TsGoA | Central State Special Archive |
| TsGVIA | Central State Military History Archives |
| TsIK | Central Executive Committee |
| TsKhSD | Centre for the Preservation of Contemporary Documentation |
| VTsIK | All-Russian Central Executive Committee |
