• 90 History
• 27 Economic conditions
• 24 Democracy
• 23 Legislation
• 21 World War, 1939-1945
• 18 World politics
• 16 Constitutional history
• 15 Depressions
• 14 Constitutional law
• 14 United States Constitution
• 13 Study and teaching
• 12 Political science
• 12 Revolution, 1775-1783
• 12 Social life and customs
• 11 Courts
• 10 Manners and customs
• 10 Political activists
• 8 Civil rights
• 8 Moyers, Bill D
• 7 African Americans
• 7 International relations
• 7 Liberty
• 7 Political participation
• 5 Immigrants

• 145 Films Media Group
• 145 Films for the Humanities & Sciences (Firm)
• 19 Public Broadcasting Service (U.S.)
• 18 WPA Film Library
• 14 Cambridge Educational (Firm)
• 10 Moyers, Bill D
• 9 Sunrise Media LLC
• 8 A&E Television Networks, LLC
• 8 Infobase
• 6 Payson, Parker
• 6 WQED Multimedia
• 4 Intelligence² (U.S.)
• 4 Uniview Worldwide
• 3 Canadian Broadcasting Corporation
• 3 Fred Friendly Seminars (Firm)
• 3 Team Sound & Vision Inc
• 3 University of Notre Dame
• 2 Alvin H. Perlmutter, Inc
• 2 Gaumont
• 2 Universal-International (Firm)
• 2 Video Education Australasia
• 2 WNET (Television station : New York, N.Y.)
• 1 ABC News Productions
• 1 AppliedInfo Partners
• 1 Butler Films

• 144 English
• 1 French

• 128 United States
• 4 Europe
• 3 New York (N.Y.)
• 2 Cuba
• 2 Europe, Eastern
• 2 Germany
• 1 Cambodia
• 1 Chicago (Ill.)
• 1 China
• 1 Developing countries
• 1 Egypt
• 1 Ethiopia
• 1 Florida
• 1 Grand Coulee Dam (Wash.)
• 1 Guinea
• 1 Haiti
• 1 Hollywood (Los Angeles, Calif.)
• 1 India
• 1 Iran
• 1 Korea (North)
• 1 Miami
• 1 Miami (Fla.)
• 1 Middle East
• 1 Northern Ireland
• 1 Pakistan

Limit year range