([Warsaw], Poland): Panstwowy Instytut Wydawniczy, (1960). First Polish edition, a paperback original in dust jacket [Grimshaw J22a]. Translated from the Polish by Bronislaw Zielinski. This copy with "1st printing - 20,000" handwritten in pencil on half-title page, reportedly in Warren's hand (provenance provided upon request.) Small ink stamp inside rear cover, spine a little creased, otherwise near fine in white, printed paperwraps and dust jacket. Dust jacket shows light edge rubbing, few tiny nicks, and slight tanning at spine, otherwise very good or better. Scarce.