Thanks for posting. Few Americans understand the extent of Soviet political imprisonment and forced labor.
I just watched The Way Back, the (supposedly) true story of Siberian gulag prisoners who escaped and walked 4,000 miles to India. You’ll enjoy it.
Ivan Solonevitch was an important part of the White Movement in emigration, a monarchist and a prolific author. In the early 1930s he attempted to escape abroad from the USSR using a false passport, was betrayed and jailed by NKVD. Served in Karelian labor camp together with his brother Boris and his son Yuri, from where all three escaped to Finland. That is the subject of Russia in Concentration Camp. Interestingly the term "concentration camp" was used by Solonevich before the Nazi concentration camps were a known phenomenon.
He survived several attempts by KNVD on his life while in emigration and his wife Tamara was killed by a Soviet bomb intended for Ivan.