John H. Becker, Soziale und politische Zustände in den Vereinig­ten Staaten Nordamerika's; Arthur von Studnitz, Nordamerikanische Arbeiterverhältnisse; Edward Young, Labor in Europe and America; a special report on the rates of wages, the cost of subsistence, and the condition of the working classes in Great Britain, France, Belgium, Germany and other countries of Europe, also in the United States and British America