Mikhail Shalyapin also Mikhail A. Shaliapin was a KGB officer identified in the Venona cables under the cover name "Stock".
References
- Alexander Vassiliev, Notes on A. Gorsky’s Report to Savchenko S.R., 23 December 1949. [1]
Mikhail Shalyapin also Mikhail A. Shaliapin was a KGB officer identified in the Venona cables under the cover name "Stock".