Imprisonment at Lubyanka
· Lubyanka Building, Moscow, Russia
Wikimedia Commons · Public domain · file Landau was arrested amid the Great Purge and was imprisoned in the NKVD's Lubyanka prison until his release in April 1939. The quoted sentence establishes confinement through 29 April 1939; the article states immediately before it that his arrest occurred on 27 April 1938.
