DRZEWIECKI, HENRYK (Hercel Rosenbaum ; 1902–1937), Polish novelist and critic. An avowed Communist, Drzewiecki wrote essays and reviews advocating revolution in order to abolish Poland's economic misery. His controversial novel Kwaśniacy (1934) greatly influenced Polish proletarian literature and the writer only escaped imprisonment by fleeing first to Paris and then to the U.S.S.R. He was executed during the Stalinist purges of the late 1930s. He was rehabilitated in 1956.