• 11 Books

• 8 Economic conditions
• 8 Social conditions
• 3 Communism
• 2 Politics and government
• 1 Intellectual life
• 1 Labor
• 1 Labor unions
• 1 Noncitizens
• 1 Relations
• 1 Religion
• 1 Working class

• 1 Barbusse, Henri, 1873-1935
• 1 Brown, Edwin Tylor, 1889-
• 1 Citrine, Walter, 1887-1983
• 1 Dreiser, Theodore, 1871-1945
• 1 Duhamel, Georges, 1884-1966
• 1 George, Pierre, 1909-2006
• 1 Hoffman, Richard
• 1 Hoffmann, Rudolf Stephan, 1878-1931
• 1 Istrati, Panait, 1884-1935
• 1 Pares, Bernard, 1867-1949
• 1 Pörzgen, Hermann
• 1 Renn, Ludwig, 1889-1979
• 1 Stransky, Karl, 1884-
• 1 Westgarth, John R

• 5 German
• 4 English
• 2 French

• 11 Soviet Union
• 1 Great Britain
• 1 Moscow (Russia)
• 1 Russia

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