• 38 WHS State Archives Preservation Facility
• 18 Law Library
• 17 Memorial Library
• 14 Wisconsin Historical Society Archives
• 4 UW Archives
• 2 MERIT Library
• 1 Temporary Relocation Library

• 27 Microforms
• 1 Photos, Drawings, Prints

• 77 Mexican Americans
• 58 Hispanic Americans
• 52 Labor unions
• 40 Communism
• 33 Social security
• 32 Politics and government
• 25 Socialism
• 22 Employees
• 22 Working class
• 20 Latin Americans
• 15 Supplemental security income program
• 13 Puerto Ricans
• 11 Clothing workers
• 10 Political activity
• 9 Income tax
• 9 Social conditions
• 7 African Americans
• 7 Cubans
• 6 Community development
• 6 Political refugees
• 6 Restaurants
• 5 Civil rights
• 5 History
• 5 Labor
• 5 Minorities

• 36 United States. Social Security Administration
• 13 United States. Internal Revenue Service
• 9 Revolutionary Communist Party, USA
• 4 Hotel Employees & Restaurant Employees International Union. Local 483 (Pacific Grove, Calif.)
• 4 Industrial Workers of the World
• 4 University of Wisconsin--Madison. Chicano Studies
• 3 Associated Students of UCLA. Communications Board
• 3 Casa de Esperanza (Waukesha, Wis.)
• 3 Inter-American Foundation
• 3 League of Revolutionaries for a New America
• 3 Progressive Labor Party
• 3 Puerto Rico. Bureau of the Budget
• 3 Spanish Speaking Catholic Commission
• 2 American Postal Workers Union. Caribbean Area Local (San Juan, P.R.)
• 2 California State University, Los Angeles. Movimiento Estudiantil Chicano de Aztlán
• 2 Central America Education Fund (Cambridge, Mass.)
• 2 Central Organization of U.S. Marxist-Leninists
• 2 Centro Hispano (Madison, Wis.)
• 2 Communist Labor Party of the United States of North America
• 2 Council for the Spanish Speaking (Milwaukee, Wis.)
• 2 Cuban Refugee Resettlement Operation (Fort McCoy, Wis.)
• 2 Esperanza Unida
• 2 Fifth Avenue Committee (Brooklyn, N.Y.)
• 2 Freedom Road Socialist Organization
• 2 International Labor Statistics Program Center (U.S.)

• 328 English
• 5 French
• 2 Chinese
• 2 German
• 1 Czech
• 1 Hmong
• 1 Multiple languages
• 1 Russian
• 1 Somali

• 139 United States
• 79 Wisconsin
• 55 California
• 40 Puerto Rico
• 33 New York (State)
• 32 Milwaukee
• 28 New York
• 18 Latin America
• 16 Madison
• 12 Los Angeles
• 10 Chicago
• 10 Illinois
• 9 Central America
• 9 Massachusetts
• 8 Minnesota
• 7 Colorado
• 7 Milwaukee (Wis.)
• 7 Texas
• 6 Cuba
• 5 San Diego
• 4 Boston
• 4 Mexico
• 4 Michigan
• 4 Minneapolis
• 4 Pacific Grove

Limit year range