• 31 Memorial Library
• 24 Wisconsin Historical Society Library

• 35 Journals, Magazines, Newspapers
• 12 Microforms
• 7 Manuscripts, Theses
• 4 Books

• 21 Labor supply
• 14 Working class
• 8 Industrial relations
• 6 Labor
• 4 History
• 4 Labor movement
• 3 Employment
• 2 Black people
• 2 Deutscher Lederarbeiter-Verband
• 2 General, Municipal, Boilermakers, and Allied Trades Union
• 2 Leather workers
• 2 Works councils
• 1 Agricultural laborers
• 1 Amalgamated Woodworkers' International Union of America
• 1 American Federation of Labor
• 1 Automobile industry and trade
• 1 Capital productivity
• 1 Communism
• 1 Deutscher Landarbeiter-Verband
• 1 Deutschnationaler Handlungsgehilfenverband
• 1 Economic conditions
• 1 General, Municipal, Boilermakers & Allied Trades Union
• 1 Imperialism
• 1 Kortmann, Emil

• 23 United States. Bureau of International Labor Affairs
• 2 Deutscher Lederarbeiter-Verband
• 2 General, Municipal, Boilermakers, and Allied Trades Union
• 1 Allgemeiner Deutscher Gewerkschaftsbund
• 1 Appel, John Conrad
• 1 Bruce, Harold R. (Harold Rozelle), 1890-1970
• 1 Buechel, Henry Theodore, 1907-
• 1 Cannon, Les
• 1 Chalmers, William Ellison, 1903-
• 1 Confédération française démocratique du travail
• 1 Confédération générale du travail
• 1 Deibler, Frederick Shipp, 1876-1961
• 1 Deutscher Holzarbeiter-Verband
• 1 Deutscher Landarbeiter-Verband
• 1 Deutschnationaler Handlungsgehilfenverband
• 1 Ellenbogen, Jack, 1923-
• 1 Freier Deutscher Gewerkschaftsbund
• 1 General, Municipal, Boilermakers & Allied Trades Union
• 1 Kortmann, Emil
• 1 Ramos, Elias Tendero, 1936-
• 1 United States. Consulate General (Johannesburg, South Africa)
• 1 United States. Embassy (Argentina)
• 1 United States. Embassy (Chile)
• 1 United States. Embassy (Congo (Democratic Republic))
• 1 United States. Embassy (Czechoslovakia)

• 35 English
• 9 German
• 2 French

• 8 Germany
• 6 Great Britain
• 6 United States
• 2 France
• 2 Germany (East)
• 1 Argentina
• 1 Australia
• 1 Chile
• 1 China
• 1 Congo (Democratic Republic)
• 1 Czechoslovakia
• 1 Ecuador
• 1 Ghana
• 1 Guyana
• 1 Hong Kong
• 1 Ireland
• 1 Jamaica
• 1 Kenya
• 1 Korea (South)
• 1 Liberia
• 1 Morocco
• 1 New Zealand
• 1 Peru
• 1 Philippines
• 1 Senegal

• 28 Periodicals
• 2 Statistics
• 1 Sources

Limit year range