Stalin and co just made folk vanish
Stalin also documented it. The big ERASURE of the tracks is Chrushov's job.
If you pick the 1952 edition of the World map printed in any Warsaw pact state you will notice an interesting anomaly - there are 16 Soviet republics, not 15. Stalin had no qualms to put his Super-Getto on the map. There is a 16th republic - the Jewish Soviet Republic which is beyond Kazahstan on the Chinese border. You can even see why too - the map shows rare earth, etc being mined in the area (what is missing is the Uranium mines and supporting industry, but that is an expected "detail").
If you pick the 1956 edition (I have both) that is missing. NEVER EVER HAPPEND Товарищ. Понятно? Chrushov and Co disappeared it from history completely (along with quite a few other things).