18 February 1929 Russian writer and poet Varlam Shalamov was arrested accused of violating article 58 item 10 of Criminal Code of the RSFSR ("anti-Soviet agitation") for illegally printing... Lenin's letters from 1922.

The reason, in spite of the fact that Lenin was still one of the official Soviet saints, was that the letters were highly critical of Stalin. In 30's the letter was declared a "fake" and its possession was a crime, only decriminalised and again declared genuine in 1956.