High Quality Content by WIKIPEDIA articles! Mark Zborowski (January 27, 1908 – April 30, 1990) (AKA "Marc" Zborowski) was an anthropologist and an NKVD agent (Venona codenames TULIP and KANT). He was the NKVD`s most valuable mole inside the Trotskyist organization in Paris during the 1930s and in New York during the 1940s.