Moscow exhibition showcases Gulag lettersletters Written on cigarette packs or scraps of newspaper, embroidered with a fishbone on shreds of cloth or scratched on birch bark, clandestine letters from the Soviet Gulag were composed by any means prisoners had. Now those desperate calls from people banished to the oblivion of Soviet-era labour camps are being given full voice in a Moscow exhibition showcasing letters from the Gulag. IMAGES AND SOUNDBITES.