Russian writer, explorer, and adventurer (1870–1938) best known for his story The Duel. ALS in Russian, signed “A. Kuprin,” one page, 8.25 x 5.25, no date. Untranslated letter to fellow writer Vladimir Bienstock in Paris. In fine condition, with a central vertical fold, two punch holes near top edge, and pencil notation under signature. RR Auction COA.