• 2 Wisconsin Historical Society Archives

• 7 Journals, Magazines, Newspapers

• 2 Working class
• 1 Anarchism
• 1 Hispanic Americans
• 1 International Committee Against Racism
• 1 Labor
• 1 Social conditions
• 1 Underground press publications

• 1 International Committee Against Racism
• 1 League of Revolutionaries for a New America
• 1 League of Revolutionary Struggle (M-L)
• 1 Movimiento Pro Independencia de Puerto Rico
• 1 National Organizing Committee (Chicago, Ill.)
• 1 Partido Socialista Puertorriqueño
• 1 Progressive Labor Party

• 5 English

• 3 United States
• 1 Chicago
• 1 Chicago (Ill.)
• 1 Cuba
• 1 Illinois
• 1 Mexico
• 1 Puerto Rico

Limit year range