London: Commission of Enquiry into the Conditions of Political Prisoners, (1936). Wraps. 35 p. 
The First Moscow Trial at which Zinoviev, Kamenev and 14 others were the defendants. This "pamphlet, by one of the leaders of the Second International, attacking the trial, with special reference to (D.N.) Pritt's pamphlet (published as "The Zinoviev Trial" in London and "At the Moscow Trial" in New York). Important. (The author refutes certain parts of the evidence, in which he was personally implicated)" - Philip Grierson, "Books on Soviet Russia 1917-1942.