• 37 Wisconsin Historical Society Library
• 1 Music Library (Mills)
• 1 WHS State Archives Preservation Facility

• 20 Working class
• 19 Labor unions
• 8 Socialism
• 4 Industrial Workers of the World. San Francisco Bay Area Branch
• 3 Communism
• 3 Industrial Workers of the World. Boston Branch
• 2 Automobile industry workers
• 2 Industrial Workers of the World. Tacoma-Olympia Branch
• 2 International Union, United Automobile Workers of America (CIO). Region 6
• 2 Labor
• 2 Socialist Labor Party
• 2 Socialist Party (U.S.)
• 2 Syndicalism
• 1 Aircraft industry
• 1 American Federation of Labor
• 1 Anarchism
• 1 Collective bargaining
• 1 Congress of Industrial Organizations (U.S.)
• 1 Employees
• 1 Folk songs, English
• 1 Industrial Workers of the World
• 1 Industrial relations
• 1 International Union, United Industrial Workers of America
• 1 Knights of Labor

• 4 Industrial Workers of the World. San Francisco Bay Area Branch
• 3 Industrial Workers of the World. Boston Branch
• 2 Industrial Workers of the World. Tacoma-Olympia Branch
• 2 Socialist Party (U.S.)
• 1 AFL-CIO. Department of Research
• 1 American Communications Association
• 1 American Federation of Labor. Committee for Industrial Organization
• 1 American Radio Telegraphists Association
• 1 Committee of 48 (U.S.)
• 1 Congress of Industrial Organizations (U.S.)
• 1 Detroit Marxist-Leninist Study Group (Detroit, Mich.)
• 1 Howards, Burton Ellison
• 1 Industrial Workers of the World
• 1 Industrial Workers of the World. Detroit-Ann Arbor Branch
• 1 Industrial Workers of the World. General Defense Committee. Local 10 (San Francisco, Calif.)
• 1 International Union, United Automobile Workers of America (CIO). Region 6
• 1 International Union, United Automobile, Aircraft, and Agricultural Implement Workers of America. Region 6
• 1 International Union, United Industrial Workers of America
• 1 Knights of Labor
• 1 League for a Labor Republic
• 1 Marxist-Leninist Party, USA. Detroit Branch
• 1 Mutual Aid Co-operative Exchange
• 1 People's Songs (Organization)
• 1 Revolt Publishing Association
• 1 Revolutionary Communist Party, USA

• 38 English
• 1 Unknown

• 6 California
• 5 États-Unis
• 4 Boston
• 4 Massachusetts
• 4 San Francisco Bay Area
• 2 Boston (Mass.)
• 2 Tacoma Metropolitan Area
• 2 Washington (State)
• 2 West (U.S.)
• 1 Chicago
• 1 Cincinnati
• 1 Cincinnati (Ohio)
• 1 Illinois
• 1 Missouri
• 1 New York (N.Y.)
• 1 New York County (N.Y.)
• 1 North Carolina
• 1 Ohio
• 1 Winston-Salem

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