We know that history holds many surprises. One doesn't expect to learn more about the secret history of of the Gulag than we already know from both Solzhenitsyn's "Gulag Acrcipelago" and Anne Applebaum's "Gulag: A history." This feat, however, is exactly what author Tim Tzouliadis has accomplished: the previously unknown story of the thousands of Americans who, during the Depression, sought employment and a better future in the "worker's paradise" built by the Bolsheviks. All kinds of Americans joined the exodus. Some of them were Communists or fellow-travelors but the majority were average Americans - skilled workers promised paid passage,...