• 6 Memorial Library
• 2 Wisconsin Historical Society Library
• 1 Law Library
• 1 WHS State Archives Preservation Facility

• 11 Journals, Magazines, Newspapers

• 7 Working class
• 3 Labor
• 2 International Labour Office
• 1 Economic conditions
• 1 Labor laws and legislation, International
• 1 United States. Department of Labor

• 3 International Labour Office
• 3 Mexico. Secretaría del Trabajo y Previsión Social
• 2 New York (State). Department of Labor
• 1 League for Industrial Rights (New York, N.Y.)
• 1 Mexico. Departamento del Trabajo
• 1 New York (State). Department of Labor. Bureau of Statistics and Information
• 1 New York (State). Department of Labor. Division of Research and Statistics
• 1 United States. Department of Labor

• 6 English
• 4 Spanish
• 1 French

• 4 Mexico
• 2 New York (State)
• 2 United States

• 1 Bibliography

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