Reprinted from the 'New Masses' of 8 March 1938. Pamphlet, 15 pages. Published in New York, dated April 1938. Sinclair's response to an open letter from Eugene Lyons, described in a note from the editors as: 'Mr Sinclair's eloquent answer to Lyons - that highly moral "socialist" who is devoting all his time to slandering the Soviet Union ...'. Slight rust to staple, otherwise very good. Has the stamp of the Marx Memorial Library, in London, on the cover and a couple of catalogue numbers.